Supplement Facts
Serving Size: 1 Tablet
Amount Per Serving
%DV
Vitamin C (as Ascorbic Acid)
1 g (1,000 mg)
1,111%
Rose Hips Powder (Rosa canina) (Fruit)
25 mg
†
Citrus Bioflavonoid Complex
25 mg
†
The product is found useful for the following medical conditions
Allergies details
SCIENTIFIC SCORE
Moderately Effective
Based on 1 Research
8
USERS' SCORE
Good
Based on 4 Reviews
8.6
8
We conducted a thorough evaluation of how vitamin C, when combined with pleuran, impacts asthma control and respiratory issues in children suffering from perennial asthma. The study was meticulously designed as a double-blind, placebo-controlled trial involving 230 children aged 7 to 17 years. This means that neither the participants nor the researchers knew who was receiving the active treatment or the placebo, ensuring the findings were reliable.
The results were promising, especially for children under 12 years. They showed significant improvements in asthma control compared to those receiving only the placebo treatment. Meanwhile, older children (12 years and above) experienced fewer respiratory infections with the combination treatment. Overall, by the end of the 48 weeks, a majority of children on the pleuran and vitamin C treatment reported better asthma control compared to those on the placebo.
While the combination of pleuran and vitamin C was indeed beneficial for managing asthma, we must note that the study did not specifically isolate the effect of vitamin C alone on allergies or asthma. Thus, it is hard to draw definitive conclusions about vitamin C's effectiveness independently from pleuran. However, the approach suggested that using these supplements together could offer a helpful boost in managing asthma symptoms.
The results were promising, especially for children under 12 years. They showed significant improvements in asthma control compared to those receiving only the placebo treatment. Meanwhile, older children (12 years and above) experienced fewer respiratory infections with the combination treatment. Overall, by the end of the 48 weeks, a majority of children on the pleuran and vitamin C treatment reported better asthma control compared to those on the placebo.
While the combination of pleuran and vitamin C was indeed beneficial for managing asthma, we must note that the study did not specifically isolate the effect of vitamin C alone on allergies or asthma. Thus, it is hard to draw definitive conclusions about vitamin C's effectiveness independently from pleuran. However, the approach suggested that using these supplements together could offer a helpful boost in managing asthma symptoms.
9
No allergies caused
Most Useful Review
5 people found this helpful
It does not cause allergies. I take it with my children, dividing one capsule amongst myself and two kids as needed. I have used it for a week now, with no allergies noted.
Updated: Mar 2026
Constipation details
SCIENTIFIC SCORE
Moderately Effective
Based on 1 Research
8
USERS' SCORE
Good
Based on 2 Reviews
8.5
8
We conducted a fully decentralized clinical trial to explore the effects of vitamin C on constipation symptoms. Participants who experienced functional constipation were randomly assigned to receive either Lactobacillus with vitamin C or vitamin C alone over a two-week treatment period. The study allowed us to gather data remotely, which is quite innovative and accessible.
Looking specifically at the results from the group that received vitamin C, we observed that while there was an increase in the frequency of bowel movements compared to the control group, the isolated effect of vitamin C itself wasn't entirely clear. The combination treatment appeared to improve bowel regularity, but it was difficult to determine how much vitamin C contributed independently to these results.
Additionally, we found that about 67% of participants were diligent in tracking their bowel diary entries, which helped ensure the reliability of our findings to an extent. Yet, a significant portion of the records were not kept as scheduled, highlighting potential hurdles in data collection for decentralized trials.
Overall, our observations suggest that while vitamin C, especially when paired with Lactobacillus, may provide some benefits for those struggling with constipation, we should exercise caution before attributing all improvements solely to vitamin C.
Looking specifically at the results from the group that received vitamin C, we observed that while there was an increase in the frequency of bowel movements compared to the control group, the isolated effect of vitamin C itself wasn't entirely clear. The combination treatment appeared to improve bowel regularity, but it was difficult to determine how much vitamin C contributed independently to these results.
Additionally, we found that about 67% of participants were diligent in tracking their bowel diary entries, which helped ensure the reliability of our findings to an extent. Yet, a significant portion of the records were not kept as scheduled, highlighting potential hurdles in data collection for decentralized trials.
Overall, our observations suggest that while vitamin C, especially when paired with Lactobacillus, may provide some benefits for those struggling with constipation, we should exercise caution before attributing all improvements solely to vitamin C.
9
Effective for constipation
Most Useful Review
It is definitely good for constipation. I'm healthy.
Updated: Mar 2026
Pelvic Pain details
SCIENTIFIC SCORE
No researches found
N/A
USERS' SCORE
Good
Based on 3 Reviews
8.5
9
Improved mobility
Most Useful Review
7 people found this helpful
Our 12-year-old Lakeland Terrier has been taking these for about two months now, and along with other supplements, she's moving around like a puppy again. We firmly believe these have significantly eased her arthritis pain and improved her quality of life.
Updated: Apr 2025
Sleep Apnea details
SCIENTIFIC SCORE
Possibly Effective
Based on 11 Researches
7.5
USERS' SCORE
Good
Based on 3 Reviews
8.5
9
Vitamin C improves sleep apnea endothelial function
We evaluated how vitamin C might improve endothelial function in patients with obstructive sleep apnea (OSA). In our study, we compared 10 individuals with untreated OSA to 10 matched control subjects without sleep issues. We measured how well blood vessels reacted to increased blood flow, known as flow-mediated dilation (FMD), using ultrasound before and after administering vitamin C.
Our findings revealed a significant difference: baseline FMD was lower in OSA patients compared to the control group. However, after an intravenous injection of vitamin C, the FMD in OSA patients improved dramatically, reaching levels similar to those seen in the healthy controls. Interestingly, vasoreactivity in the control subjects remained unchanged.
These results suggest that oxidative stress might be a key factor contributing to the endothelial dysfunction experienced by individuals with OSA. The positive response to vitamin C opens up exciting possibilities for exploring antioxidant treatments in managing cardiovascular issues related to OSA.
Our findings revealed a significant difference: baseline FMD was lower in OSA patients compared to the control group. However, after an intravenous injection of vitamin C, the FMD in OSA patients improved dramatically, reaching levels similar to those seen in the healthy controls. Interestingly, vasoreactivity in the control subjects remained unchanged.
These results suggest that oxidative stress might be a key factor contributing to the endothelial dysfunction experienced by individuals with OSA. The positive response to vitamin C opens up exciting possibilities for exploring antioxidant treatments in managing cardiovascular issues related to OSA.
9
Great for sleep
Most Useful Review
I love it. The quality, size, packaging, and taste are superb. I use it every day with breakfast. The ingredients are excellent, and it has numerous benefits for my skin, nails, and hair, as well as for my joints and muscles. I sleep wonderfully thanks to it, and it provides a good vitamin boost for my immune system.
Updated: Mar 2026
Whooping Cough details
SCIENTIFIC SCORE
No researches found
N/A
USERS' SCORE
Good
Based on 2 Reviews
8.5
9
Strong immunity boost
Most Useful Review
The best Vitamin C! I've been taking Now vitamin C for many years, even before the COVID era. I can confidently say that it’s been years since I experienced a severe cold during winter. Even in extreme weather, I just have minor sneezing and coughing for 2-3 days, and that's it. I highly recommend it for a robust immune system, especially with the 1,000mg potency in one tablet. I take one in the morning with a glass of water from mid-November to mid-April, and everything is perfect! One minor consideration is the tablet size; it is quite large, so if you're not fond of big pills, this may not be the product for you. Otherwise, you can't go wrong with Now's vitamin C.
Updated: Apr 2025
Bone Pain details
SCIENTIFIC SCORE
No researches found
N/A
USERS' SCORE
Good
Based on 4 Reviews
8.4
9
Eased arthritis pain
Most Useful Review
7 people found this helpful
Our 12-year-old Lakeland Terrier has been taking these for about two months now, and together with other supplements, she's moving about like a puppy again. We are certain these have significantly eased her bone pain due to arthritis and improved her quality of life.
Updated: Apr 2025
Bronchitis details
SCIENTIFIC SCORE
Possibly Effective
Based on 6 Researches
7.3
USERS' SCORE
Good
Based on 2 Reviews
8.4
9
Vitamin C aids bronchitis resistance
We explored how supplementing the diet of broiler chicks with different levels of vitamin C, also known as ascorbic acid, impacts their resistance to infectious bronchitis virus. The goal was to determine whether this supplement could help improve their health by measuring the severity of tracheal lesions and the presence of airsacculitis after exposure to the virus.
Our findings indicated that the effectiveness of vitamin C was dose-dependent. We observed that adding between 300 to 330 parts per million (ppm) of ascorbic acid to their feed yielded the best protective results. Interestingly, when we looked at higher concentrations—beyond 600 ppm—the benefits seemed to diminish. This suggests that while vitamin C can be beneficial, there's a suitable range for its effectiveness.
Overall, this study highlights the potential of vitamin C as a useful dietary addition for enhancing the health of broilers facing bronchitis. Yet, it's clear that more isn't always better when it comes to dosage, and finding that sweet spot is crucial for maximizing its effectiveness.
Our findings indicated that the effectiveness of vitamin C was dose-dependent. We observed that adding between 300 to 330 parts per million (ppm) of ascorbic acid to their feed yielded the best protective results. Interestingly, when we looked at higher concentrations—beyond 600 ppm—the benefits seemed to diminish. This suggests that while vitamin C can be beneficial, there's a suitable range for its effectiveness.
Overall, this study highlights the potential of vitamin C as a useful dietary addition for enhancing the health of broilers facing bronchitis. Yet, it's clear that more isn't always better when it comes to dosage, and finding that sweet spot is crucial for maximizing its effectiveness.
9
No bronchitis occurrence
Most Useful Review
2 people found this helpful
Rick Nelson C-1000 has been excellent for me. Ever since I've started taking these, I have not had bronchitis, which I used to experience two to three times a year. It provides a great boost for the immune system. A fantastic product.
Updated: Apr 2025
Cancer details
SCIENTIFIC SCORE
Likely Very Effective
Based on 1 Research
9
USERS' SCORE
Good
Based on 4 Reviews
8.4
9
We delved into how vitamin C might influence cancer treatment, focusing on its effects on the immune system. Our findings revealed that vitamin C directly modifies certain proteins, leading to a new type of protein change called vitcylation. This process specifically affects a protein known as STAT1.
By modifying STAT1, vitamin C enhances its ability to signal for immune responses. We found that this modification occurs in both controlled environments and living cells, depending on factors like dosage and acidity. As a result of vitcylation, the action of STAT1 is improved, which activates important immune responses in tumor cells and boosts the expression of molecules that help the immune system recognize and attack cancer cells.
Interestingly, this research sheds light on the potential of vitamin C as a treatment that not only affects cancer directly but also empowers the body’s own defenses. These insights pave the way for new approaches to cancer therapy that leverage the immune system in conjunction with vitamin C.
By modifying STAT1, vitamin C enhances its ability to signal for immune responses. We found that this modification occurs in both controlled environments and living cells, depending on factors like dosage and acidity. As a result of vitcylation, the action of STAT1 is improved, which activates important immune responses in tumor cells and boosts the expression of molecules that help the immune system recognize and attack cancer cells.
Interestingly, this research sheds light on the potential of vitamin C as a treatment that not only affects cancer directly but also empowers the body’s own defenses. These insights pave the way for new approaches to cancer therapy that leverage the immune system in conjunction with vitamin C.
9
Natural medicine benefits
Most Useful Review
1 people found this helpful
Few people realise that this is the best natural medicine! I haven’t been ill for years; I can’t even remember what a runny nose feels like. It’s remarkable to consider taking 200g per day, especially with serious conditions like cancer. I took 30g daily for candida, and it worked perfectly. Our bodies are well-equipped for all illnesses but occasionally need our assistance, and that’s where this comes in. I avoid medications, only taking vitamins, and everything is well.
Updated: Apr 2025
Cardiovascular Disease details
SCIENTIFIC SCORE
Moderately Effective
Based on 4 Researches
8
USERS' SCORE
Good
Based on 3 Reviews
8.4
7
Vitamin C enhances NK cell proliferation
We explored the effects of vitamin C on natural killer (NK) cell activity in patients with coronary artery disease (CAD). Our research involved isolating NK cells from 29 CAD patients and treating them with various stimulatory factors, including ascorbic acid—better known as vitamin C.
What we found was quite interesting: when NK cells were treated with ascorbic acid, there was a significant increase in their ability to proliferate. This meant that the NK cells were more active and potentially more effective in responding to threats in the body, which is vital for those dealing with heart conditions.
Furthermore, we measured serum lactate dehydrogenase (LDH) levels, discovering a negative correlation between LDH and NK cell activity. Higher LDH levels seemed to indicate lower proliferation capability in NK cells influenced by interleukins.
Overall, our study suggests that vitamin C could play a positive role in enhancing immune function in CAD patients by promoting NK cell proliferation. However, it's important to note that while vitamin C shows promise, further research is needed to fully understand its impact on cardiovascular health and immune regulation.
What we found was quite interesting: when NK cells were treated with ascorbic acid, there was a significant increase in their ability to proliferate. This meant that the NK cells were more active and potentially more effective in responding to threats in the body, which is vital for those dealing with heart conditions.
Furthermore, we measured serum lactate dehydrogenase (LDH) levels, discovering a negative correlation between LDH and NK cell activity. Higher LDH levels seemed to indicate lower proliferation capability in NK cells influenced by interleukins.
Overall, our study suggests that vitamin C could play a positive role in enhancing immune function in CAD patients by promoting NK cell proliferation. However, it's important to note that while vitamin C shows promise, further research is needed to fully understand its impact on cardiovascular health and immune regulation.
9
Speeds up recovery
Most Useful Review
Powerful Vitamin C Formula - 1000 mg! With added rose hips and bioflavonoids! I always recommend keeping a jar in your first-aid kit for when illness strikes. During illness, I take it multiple times daily in shock doses to fight the disease, which will recede in 2-3 days! Great vitamin C at a fantastic price! Highly recommend!
Updated: Apr 2025
Blood Clot details
SCIENTIFIC SCORE
Questionable
Based on 6 Researches
6.7
USERS' SCORE
Good
Based on 2 Reviews
8.3
9
We sought to understand how ascorbic acid, commonly known as vitamin C, impacts blood clotting during living donor liver transplantation (LDLT). In our study, we analyzed blood samples from 21 recipients before and after their surgeries.
We employed a well-structured approach, using rotational thromboelastography (TEG) and western blot analysis to scrutinize fibrinolysis and the functionality of specific proteins involved in clotting. Blood samples were tested in three distinct groups, one receiving vitamin C, to see its effects on clot rigidity and fibrinolysis.
Our findings revealed that ascorbic acid notably reduced fibrinolysis, which refers to the breakdown of blood clots, and improved the rigidity of the clots formed. Additionally, we observed that levels of a protein called Cbl-b were higher in those receiving vitamin C, while another protein, c-Cbl, showed reduced phosphorylation. These functional changes might explain how vitamin C supports better clotting during surgeries.
This study indicates that vitamin C could be a beneficial treatment to consider during LDLT to manage hyperfibrinolysis, thus promoting better outcomes for patients undergoing these complex procedures.
We employed a well-structured approach, using rotational thromboelastography (TEG) and western blot analysis to scrutinize fibrinolysis and the functionality of specific proteins involved in clotting. Blood samples were tested in three distinct groups, one receiving vitamin C, to see its effects on clot rigidity and fibrinolysis.
Our findings revealed that ascorbic acid notably reduced fibrinolysis, which refers to the breakdown of blood clots, and improved the rigidity of the clots formed. Additionally, we observed that levels of a protein called Cbl-b were higher in those receiving vitamin C, while another protein, c-Cbl, showed reduced phosphorylation. These functional changes might explain how vitamin C supports better clotting during surgeries.
This study indicates that vitamin C could be a beneficial treatment to consider during LDLT to manage hyperfibrinolysis, thus promoting better outcomes for patients undergoing these complex procedures.
7.5
Improves blood coagulation
Most Useful Review
Vitamin C has an antioxidant effect, fighting against free radicals. It plays a role in synthesising steroid hormones, collagen, and hyaluronic acid. It is also involved in blood coagulation processes, maintaining normal capillary permeability, promoting tissue regeneration, and enhancing the absorption of iron. Furthermore, it provides anti-inflammatory and anti-allergic effects.
Updated: Mar 2026
Cold Sores details
SCIENTIFIC SCORE
Moderately Effective
Based on 3 Researches
8.3
USERS' SCORE
Good
Based on 41 Reviews
8.3
9
We investigated how an ascorbic acid-based solution could help treat recurrent cold sores, also known as mucocutaneous herpes. This study was carefully designed as a randomized, double-blind, placebo-controlled trial, which helps ensure the results are reliable and trustworthy.
Participants used a strong solution of Ascoxal, rich in vitamin C, applied to their cold sores multiple times on the first day of the outbreak. We monitored various symptoms daily, including the severity of scabs, redness, and blisters, comparing the experiences of those using the vitamin C solution to a placebo group.
Our findings were promising: the active treatment resulted in fewer days with scabbing and less severe symptoms overall. Moreover, those using the vitamin C solution showed reduced persistence of scabs compared to the placebo group, along with a lower frequency of detected herpes virus after treatment.
In conclusion, this brief course of vitamin C treatment appears to have significant clinical benefits against cold sores, opening the door for future research on more extensive and frequent treatment regimes.
Participants used a strong solution of Ascoxal, rich in vitamin C, applied to their cold sores multiple times on the first day of the outbreak. We monitored various symptoms daily, including the severity of scabs, redness, and blisters, comparing the experiences of those using the vitamin C solution to a placebo group.
Our findings were promising: the active treatment resulted in fewer days with scabbing and less severe symptoms overall. Moreover, those using the vitamin C solution showed reduced persistence of scabs compared to the placebo group, along with a lower frequency of detected herpes virus after treatment.
In conclusion, this brief course of vitamin C treatment appears to have significant clinical benefits against cold sores, opening the door for future research on more extensive and frequent treatment regimes.
9
Immunity booster
Most Useful Review
14 people found this helpful
In the season of colds, I buy these for the entire family. Taking one capsule each morning works wonders! We haven't fallen ill for three years following this routine. I highly recommend it – this will be an invaluable aid for your whole family!
Updated: Apr 2025
Kidney Stones details
SCIENTIFIC SCORE
Questionable
Based on 8 Researches
6.9
USERS' SCORE
Good
Based on 2 Reviews
8.3
4
We examined the relationship between vitamin C intake and the risk of developing kidney stones in a large cohort. This study included a significant number of participants: 156,735 women from the Nurses' Health Studies and 40,536 men from the Health Professionals Follow-up Study.
Our findings revealed that total and supplemental vitamin C intake was linked to a higher risk of kidney stones in men, but there was no such association evident in women. Specifically, among men, those who consumed higher amounts of vitamin C had greater likelihoods of developing stones when compared to those with lower intakes.
However, dietary vitamin C did not show a connection with kidney stones in either men or women. This suggests that while supplements may pose risks for men, dietary sources of vitamin C might not have the same impact. Overall, the study indicates that we should be cautious about high vitamin C supplement consumption, especially for men, while highlighting that dietary intake appears safe.
Our findings revealed that total and supplemental vitamin C intake was linked to a higher risk of kidney stones in men, but there was no such association evident in women. Specifically, among men, those who consumed higher amounts of vitamin C had greater likelihoods of developing stones when compared to those with lower intakes.
However, dietary vitamin C did not show a connection with kidney stones in either men or women. This suggests that while supplements may pose risks for men, dietary sources of vitamin C might not have the same impact. Overall, the study indicates that we should be cautious about high vitamin C supplement consumption, especially for men, while highlighting that dietary intake appears safe.
7.5
Prevents kidney stones
Most Useful Review
I don't take megadoses, but I drink a lot of water and take one tablet a day to prevent kidney stones.
Updated: Mar 2026
Adrenal Gland Disorder details
SCIENTIFIC SCORE
No researches found
N/A
USERS' SCORE
Good
Based on 2 Reviews
8.2
7.5
Aids adrenal fatigue
Most Useful Review
The tablets are rather large but easy to swallow. I consume 4 tablets daily, following recommendations in a book to assist with my adrenal gland disorder. It’s certainly helping! I will purchase again.
Updated: Apr 2025
Bruise details
SCIENTIFIC SCORE
Moderately Effective
Based on 11 Researches
8.2
USERS' SCORE
Good
Based on 2 Reviews
8.2
8
We explored how vitamin C can impact bruising, particularly in individuals experiencing a deficiency. The research highlighted a case involving an elderly woman who faced challenges such as weakness, easy bruising, and fatigue due to a lack of this vital nutrient.
After beginning treatment with vitamin C supplements, we observed significant improvements in her symptoms, emphasizing the importance of this vitamin in healthier skin and tissue repair. It showcased that scurvy, a condition rooted in vitamin C deficiency, can still occur today, especially in certain at-risk populations.
This case reminds us that while scurvy might seem like a relic of the past, it can still affect modern individuals. Skin issues like easy bruising can sometimes signal deeper dietary concerns that need addressing, especially in older adults.
After beginning treatment with vitamin C supplements, we observed significant improvements in her symptoms, emphasizing the importance of this vitamin in healthier skin and tissue repair. It showcased that scurvy, a condition rooted in vitamin C deficiency, can still occur today, especially in certain at-risk populations.
This case reminds us that while scurvy might seem like a relic of the past, it can still affect modern individuals. Skin issues like easy bruising can sometimes signal deeper dietary concerns that need addressing, especially in older adults.
7.5
Faster bruise healing
Most Useful Review
I did not experience any heartburn or discomfort after taking this vitamin C. Bruises on my skin seem to fade more quickly. I trust that the vitamin is beneficial.
Updated: Apr 2026
Chronic Fatigue Syndrome details
SCIENTIFIC SCORE
Possibly Effective
Based on 5 Researches
7
USERS' SCORE
Good
Based on 6 Reviews
8.2
7
We examined how a combination of megadose vitamin C infusions and other treatments might help manage chronic fatigue syndrome, particularly in the context of interstitial pneumonia. Our findings were based on nearly a decade of treating patients, allowing us to gather valuable insights.
We observed that the long-term use of this treatment system significantly reduced the risk of pneumonia recurrence. It also appeared to help prevent the emergence of certain cancers in older patients suffering from interstitial pneumonia. Surprisingly, we found a link between interstitial pneumonia and an increased risk of depression, likely driven by prolonged glucocorticoid use.
While some patients showed promise under this treatment, those battling both interstitial pneumonia and depression responded less favorably. We suggested that increasing the amount of dehydroepiandrosterone in the treatment could be beneficial. Throughout our experience, we noted that the characteristics of chronic fatigue syndrome align closely with those of interstitial pneumonia, arguing against the notion that they should be viewed as separate conditions.
Overall, our approach not only alleviated inflammation but did not suppress the fibrotic processes in the long run. We made modifications to the treatment to lower the risks of vascular complications. The main strength of our treatment lies in creating a hormonal environment that helps tackle immune deficiencies using vitamin C, which faces lower resistance in the body compared to steroid treatments.
We observed that the long-term use of this treatment system significantly reduced the risk of pneumonia recurrence. It also appeared to help prevent the emergence of certain cancers in older patients suffering from interstitial pneumonia. Surprisingly, we found a link between interstitial pneumonia and an increased risk of depression, likely driven by prolonged glucocorticoid use.
While some patients showed promise under this treatment, those battling both interstitial pneumonia and depression responded less favorably. We suggested that increasing the amount of dehydroepiandrosterone in the treatment could be beneficial. Throughout our experience, we noted that the characteristics of chronic fatigue syndrome align closely with those of interstitial pneumonia, arguing against the notion that they should be viewed as separate conditions.
Overall, our approach not only alleviated inflammation but did not suppress the fibrotic processes in the long run. We made modifications to the treatment to lower the risks of vascular complications. The main strength of our treatment lies in creating a hormonal environment that helps tackle immune deficiencies using vitamin C, which faces lower resistance in the body compared to steroid treatments.
9
Fatigue much better
Most Useful Review
I feel significantly better as my fatigue has been greatly reduced.
Updated: Mar 2026
Cold details
SCIENTIFIC SCORE
Moderately Effective
Based on 2 Researches
8
USERS' SCORE
Good
Based on 310 Reviews
8.2
7
Effectiveness of Vitamin C on Colds
We explored the effects of vitamin C on the common cold and pneumonia by examining a range of studies. Interestingly, research on animals suggests that vitamin C may have protective effects against infections. However, when it comes to preventing colds in the general population, taking more than 1 gram of vitamin C per day didn’t show significant benefits.
But there's a twist! Participants engaged in heavy physical activities saw their cold incidence reduced by half with vitamin C supplementation. Additionally, regular intake of 1 gram or more daily was linked to a 15% decrease in cold severity. While some therapeutic trials showed inconsistent results when vitamin C was taken after cold symptoms appeared, two studies did indicate that larger doses (6-8 grams per day) could effectively shorten the duration of colds compared to lower doses.
Our investigation also looked into pneumonia, but the studies were conducted in unique settings, such as a boarding school and military recruits. This makes it hard to generalize the findings to the wider population. Yet, some trials suggested benefits for pneumonia patients. Finally, the role of vitamin C in treating COVID-19 and sepsis remains unclear, with mixed results.
Given that vitamin C seems to alleviate symptoms and shorten the duration of colds, while being safe and affordable, it might be worth considering a dose of 6-8 grams per day to see if it helps at an individual level.
But there's a twist! Participants engaged in heavy physical activities saw their cold incidence reduced by half with vitamin C supplementation. Additionally, regular intake of 1 gram or more daily was linked to a 15% decrease in cold severity. While some therapeutic trials showed inconsistent results when vitamin C was taken after cold symptoms appeared, two studies did indicate that larger doses (6-8 grams per day) could effectively shorten the duration of colds compared to lower doses.
Our investigation also looked into pneumonia, but the studies were conducted in unique settings, such as a boarding school and military recruits. This makes it hard to generalize the findings to the wider population. Yet, some trials suggested benefits for pneumonia patients. Finally, the role of vitamin C in treating COVID-19 and sepsis remains unclear, with mixed results.
Given that vitamin C seems to alleviate symptoms and shorten the duration of colds, while being safe and affordable, it might be worth considering a dose of 6-8 grams per day to see if it helps at an individual level.
10
No colds after usage
Most Useful Review
264 people found this helpful
Vitamin C is vital for the immune system. I purchased it to recover from the coronavirus. After taking it with multivitamins, I have not had a hint of a cold or virus for a year. I believe vitamin C is the key!
Updated: Mar 2026
Flu details
SCIENTIFIC SCORE
Possibly Effective
Based on 8 Researches
7.5
USERS' SCORE
Good
Based on 37 Reviews
8.2
8
We examined the effects of vitamin C on pneumonia caused by the influenza virus, specifically the H1N1 strain, in mice under stress. The study found that when exposed to restraint stress, the mice experienced increased mortality and more severe pneumonia symptoms.
However, by giving them oral vitamin C at doses of 125 and 250 mg/kg, we observed a significant reduction in these severe outcomes. Vitamin C seemed to modulate the expression of certain genes related to the immune response, such as MAVS and IRF3, and increased the expression of NF-κB, which plays a key role in the body's antiviral defense.
Our research suggested that vitamin C's protective effects might stem from its ability to inhibit excess cortisol production in the adrenal gland, which is often elevated due to stress. By lowering cortisol levels, vitamin C may help reduce susceptibility to influenza infections, making it a potential ally during the flu season, especially for those experiencing stress.
Through these findings, we highlighted a new mechanism for how vitamin C can be beneficial during influenza infections, particularly for those who are feeling overwhelmed.
However, by giving them oral vitamin C at doses of 125 and 250 mg/kg, we observed a significant reduction in these severe outcomes. Vitamin C seemed to modulate the expression of certain genes related to the immune response, such as MAVS and IRF3, and increased the expression of NF-κB, which plays a key role in the body's antiviral defense.
Our research suggested that vitamin C's protective effects might stem from its ability to inhibit excess cortisol production in the adrenal gland, which is often elevated due to stress. By lowering cortisol levels, vitamin C may help reduce susceptibility to influenza infections, making it a potential ally during the flu season, especially for those experiencing stress.
Through these findings, we highlighted a new mechanism for how vitamin C can be beneficial during influenza infections, particularly for those who are feeling overwhelmed.
9
Effective flu remedy
Most Useful Review
6 people found this helpful
Unbelievable product in terms of both results and value for money! I struggled with swallowing tablets and initially took vitamin C capsules; however, the results were not the same. I shared the tablets with friends who had flu, and within 24 hours they felt better. When I caught the flu this week and took the capsules, I noticed no improvement. Today, I managed to swallow the Now Foods tablets, and I am already feeling almost back to normal. This product is fabulous! I'm so glad to have experienced such positive results.
Updated: Mar 2026
Headache details
SCIENTIFIC SCORE
Possibly Effective
Based on 3 Researches
7.7
USERS' SCORE
Good
Based on 2 Reviews
8.2
8
We aimed to understand how dietary vitamin C affects migraines by analyzing data from the National Health and Nutrition Examination Survey, conducted from 1999 to 2004. In this survey, we identified adults who reported experiencing severe headaches or migraines over the past three months.
Our findings were quite revealing. Out of 4,101 participants, 702 individuals reported having a migraine, which represents about 17% of the group. We discovered an interesting trend: higher dietary vitamin C intake seemed to correlate with a lower likelihood of experiencing migraines. Specifically, participants with the highest vitamin C intake had a 36% reduced odds of suffering from migraines compared to those with the lowest intake.
We employed various statistical methods to confirm our results, including logistic regression and restricted cubic spline regression, which showed a clear linear relationship between vitamin C intake and the frequency of migraines.
Overall, this study suggests that increasing our dietary vitamin C might help minimize migraines, which is promising news for those who suffer from these intense headaches. However, as with all studies, further research is necessary to solidify these findings and fully understand the relationship between vitamin C and headache relief.
Our findings were quite revealing. Out of 4,101 participants, 702 individuals reported having a migraine, which represents about 17% of the group. We discovered an interesting trend: higher dietary vitamin C intake seemed to correlate with a lower likelihood of experiencing migraines. Specifically, participants with the highest vitamin C intake had a 36% reduced odds of suffering from migraines compared to those with the lowest intake.
We employed various statistical methods to confirm our results, including logistic regression and restricted cubic spline regression, which showed a clear linear relationship between vitamin C intake and the frequency of migraines.
Overall, this study suggests that increasing our dietary vitamin C might help minimize migraines, which is promising news for those who suffer from these intense headaches. However, as with all studies, further research is necessary to solidify these findings and fully understand the relationship between vitamin C and headache relief.
7.5
Relieves headaches
Most Useful Review
Great product. Before I was introduced to Lypricel Vitamin C, I used this vitamin C. For cold or flu, I took 2-3 every two hours. It helped with numerous issues, including headaches and a low mood, although you need to take more than Lypricel Vitamin C. I still like it.
Updated: Apr 2026
Diarrhea details
SCIENTIFIC SCORE
Questionable
Based on 2 Researches
6.5
USERS' SCORE
Good
Based on 5 Reviews
8.1
9
We investigated how adding vitamin C to milk influences the growth and health of young calves, particularly those experiencing diarrhea. The study involved 48 Holstein calves, which were sorted into two groups based on their health status: healthy calves and those with diarrhea. Each calf was fed the same amount of pasteurized milk and monitored until they reached 74 days of age.
Calves that received vitamin C showed an impressive increase in weight by weaning—74.3 kg compared to 72.2 kg for those without vitamin C. Additionally, calves treated with vitamin C demonstrated improved blood antioxidant levels, suggesting better overall health. Notably, calves suffering from diarrhea benefitted significantly from the vitamin C, needing fewer days of medication for treatment compared to those who did not receive the supplement.
The research highlights that vitamin C can play a critical role in supporting the health of calves during episodes of diarrhea. This is especially relevant for those that faced even mild cases early in life, as they seemed to gain the most benefits from the supplementation. Overall, it appears that vitamin C can positively impact both growth and health in calves suffering from diarrhea.
Calves that received vitamin C showed an impressive increase in weight by weaning—74.3 kg compared to 72.2 kg for those without vitamin C. Additionally, calves treated with vitamin C demonstrated improved blood antioxidant levels, suggesting better overall health. Notably, calves suffering from diarrhea benefitted significantly from the vitamin C, needing fewer days of medication for treatment compared to those who did not receive the supplement.
The research highlights that vitamin C can play a critical role in supporting the health of calves during episodes of diarrhea. This is especially relevant for those that faced even mild cases early in life, as they seemed to gain the most benefits from the supplementation. Overall, it appears that vitamin C can positively impact both growth and health in calves suffering from diarrhea.
7.5
Indispensable supplement
Most Useful Review
3 people found this helpful
Must! I've been drinking this for over six years now. I generally take one tablet every three hours as a guideline. If I feel unwell, I continue to take one every 30 minutes until just before experiencing diarrhoea. Thanks to you, I don't know the hospital. It's an absolutely indispensable supplement for managing my physical condition.
Updated: Apr 2025
Adenoiditis details
SCIENTIFIC SCORE
No researches found
N/A
USERS' SCORE
Good
Based on 7 Reviews
8
9
Improved immunity
Most Useful Review
1 people found this helpful
Fast-absorbing Vitamin C has significantly boosted my immunity following breast cancer surgery. It offers protection against persistent sore throats and gum swelling. Additionally, the pricing is quite reasonable.
Updated: Mar 2026
Swollen Lymph Nodes details
SCIENTIFIC SCORE
No researches found
N/A
USERS' SCORE
Good
Based on 3 Reviews
8
7.5
Effective vitamin C
Most Useful Review
I repeatedly say this supplement is my favourite because it puts vitamin C in a dynamic flow state when I catch a cold or have swollen lymph nodes. I've tried others, but this one seems most effective. It's a staple for me.
Updated: Apr 2025
Ulcer details
SCIENTIFIC SCORE
Moderately Effective
Based on 10 Researches
8.2
USERS' SCORE
Moderately Good
Based on 2 Reviews
7.9
9.5
We looked into how well ascorbic acid, or vitamin C, helps heal chronic foot ulcers. In a carefully designed trial, we compared the effects of vitamin C against a placebo on sixteen participants.
Over 8 weeks, those who received vitamin C showed significant healing improvements, with a median healing rate of 100%, compared to a negative healing rate in the placebo group.
Everyone in the vitamin C group avoided amputation, while almost half from the control group did not heal at all. This affordable and accessible treatment could greatly benefit those suffering from chronic foot ulcers.
Over 8 weeks, those who received vitamin C showed significant healing improvements, with a median healing rate of 100%, compared to a negative healing rate in the placebo group.
Everyone in the vitamin C group avoided amputation, while almost half from the control group did not heal at all. This affordable and accessible treatment could greatly benefit those suffering from chronic foot ulcers.
7.5
Effective for ulcers
Most Useful Review
This Vitamin C is effective for skin and mouth ulcers and significantly improves immunity!
Updated: Apr 2025
Acne details
SCIENTIFIC SCORE
Possibly Effective
Based on 18 Researches
7.1
USERS' SCORE
Moderately Good
Based on 7 Reviews
7.8
9
We explored the potential of sodium ascorbyl phosphate (SAP), a stable form of vitamin C, in preventing and treating acne vulgaris. The study included a time-kill analysis showing that a 1% SAP formulation reduced the harmful bacteria Propionibacterium acnes by a significant log reduction of 5 after 8 hours. This demonstrates the strong antimicrobial properties of SAP against acne-causing bacteria.
Additionally, we observed an in vivo study with 20 participants, where the SAP formulation effectively prevented up to 40% of UVA-induced sebum oxidation, suggesting it can help reduce inflammation associated with acne. In another open-label study involving 60 volunteers over 12 weeks, a 5% SAP lotion was rated as excellent or good in effectiveness by 76.9% of the participants, outperforming a commonly prescribed acne treatment.
Overall, our findings indicate that sodium ascorbyl phosphate could serve as an effective, non-antibiotic option for both the prevention and treatment of acne, making it an attractive addition to cosmetic products due to its lack of side effects.
Additionally, we observed an in vivo study with 20 participants, where the SAP formulation effectively prevented up to 40% of UVA-induced sebum oxidation, suggesting it can help reduce inflammation associated with acne. In another open-label study involving 60 volunteers over 12 weeks, a 5% SAP lotion was rated as excellent or good in effectiveness by 76.9% of the participants, outperforming a commonly prescribed acne treatment.
Overall, our findings indicate that sodium ascorbyl phosphate could serve as an effective, non-antibiotic option for both the prevention and treatment of acne, making it an attractive addition to cosmetic products due to its lack of side effects.
10
No acne at all
Most Useful Review
1 people found this helpful
The best vitamin C ever! This supplement has worked wonders for me over the past two months. I've noticed my skin becoming fairer, and I have no acne at all now. I'm committed to this product for the long term!
Updated: Apr 2026
Heartburn details
SCIENTIFIC SCORE
Moderately Effective
Based on 1 Research
8
USERS' SCORE
Moderately Good
Based on 5 Reviews
7.8
8
Vitamin C reduces heartburn symptoms
We investigated how vitamin C, specifically in the form of a 2% vitamin C solution spray, could help alleviate heartburn symptoms following Lugol chromoendoscopy, a procedure that involves staining the esophagus to better visualize abnormalities. In a well-structured study with 240 participants, we used a randomized, double-blind approach to compare the effectiveness of vitamin C to normal saline and sodium thiosulfate solutions.
Our results showed that vitamin C spray significantly reduced both acute heartburn symptoms and late discomfort when compared to the saline solution. Specifically, 33% of participants using vitamin C reported relief from acid regurgitation or heartburn, compared to just 15% with sodium thiosulfate. Additionally, patients noted an improvement in retrosternal pain, with 21% finding relief from the vitamin C treatment versus 9% from sodium thiosulfate.
Furthermore, vitamin C offered a quicker discoloration of the iodine-stained mucosa compared to saline, enhancing the overall experience of the procedure. These findings suggest that incorporating vitamin C spray into post-procedural care could be a helpful strategy for patients facing discomfort after undergoing Lugol chromoendoscopy.
Our results showed that vitamin C spray significantly reduced both acute heartburn symptoms and late discomfort when compared to the saline solution. Specifically, 33% of participants using vitamin C reported relief from acid regurgitation or heartburn, compared to just 15% with sodium thiosulfate. Additionally, patients noted an improvement in retrosternal pain, with 21% finding relief from the vitamin C treatment versus 9% from sodium thiosulfate.
Furthermore, vitamin C offered a quicker discoloration of the iodine-stained mucosa compared to saline, enhancing the overall experience of the procedure. These findings suggest that incorporating vitamin C spray into post-procedural care could be a helpful strategy for patients facing discomfort after undergoing Lugol chromoendoscopy.
9
No side effects
Most Useful Review
I find it healthy with no side effects, which is beneficial since I am prone to heartburn.
Updated: Mar 2026
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