Overview
SCIENTIFIC SCORE
Possibly Effective
Based on 8 Researches
7.5
USERS' SCORE
Moderately Good
Based on 41 Reviews
7.9
Supplement Facts
Serving Size: 1 Vegetarian Tablet
Amount Per Serving
%DV
Vitamin C (as Ester-C® Calcium Ascorbate)
1,000 mg (1 g)
1,111%
Calcium (as Ester-C® Calcium Ascorbate)
110 mg
8%
Citrus Bioflavonoids ComplexCitrus Bioflavonoids (Citrus sinensis) (fruit), Sweet Orange, Tangerine, Lime, Lemon, Acerola, Rutin, Hesperidin Complex (Citrus spp.) (fruit), Naturally Occurring Vitamin C Metabolites
200 mg
**
Top Medical Research Studies
8
We explored how vitamin C affects the severity of common colds through a comprehensive review of available studies. By including only randomized, placebo-controlled trials where participants received at least 1 gram of vitamin C daily, we aimed to investigate both the overall duration of colds and the intensity of symptoms experienced.
Our analysis found that vitamin C significantly reduced the severity of cold symptoms by about 15%. Interestingly, it appears that the benefits are more pronounced for those experiencing severe symptoms compared to mild ones. In specific comparisons, vitamin C didn’t substantially affect the duration of mild symptoms but had a notable impact on how long severe symptoms lasted.
This insight is crucial, as the common cold often leads to absenteeism at work and school, with more severe symptoms playing a key role in this setback. By highlighting vitamin C's greater effectiveness against intense cold symptoms, we suggest that future research should continue to look into how this vitamin can be utilized in managing cold severity.
Our analysis found that vitamin C significantly reduced the severity of cold symptoms by about 15%. Interestingly, it appears that the benefits are more pronounced for those experiencing severe symptoms compared to mild ones. In specific comparisons, vitamin C didn’t substantially affect the duration of mild symptoms but had a notable impact on how long severe symptoms lasted.
This insight is crucial, as the common cold often leads to absenteeism at work and school, with more severe symptoms playing a key role in this setback. By highlighting vitamin C's greater effectiveness against intense cold symptoms, we suggest that future research should continue to look into how this vitamin can be utilized in managing cold severity.
Read More
8
Vitamin C's potential benefits highlighted
We assessed the longstanding debate about vitamin C’s effectiveness in treating the common cold. This exploration reveals that evidence has consistently indicated that vitamin C can indeed help reduce the duration and severity of cold symptoms in certain circumstances.
However, despite this evidence, mainstream medicine has often favored what we call eminence-based medicine, relying on influential figures rather than empirical data. The skepticism surrounding vitamin C largely traces back to three pivotal studies published in 1975, two in JAMA and one in the American Journal of Medicine. These studies have shaped the narrative in textbooks and nutritional guidelines, despite exhibiting notable flaws that we carefully examined.
Furthermore, we highlighted misleading reporting in recent randomized trials and critical editorials published in JAMA regarding vitamin C. While our critique largely focuses on this journal, it reflects a broader trend across medical literature, indicating a possible bias against acknowledging the benefits of vitamin C in fighting colds.
However, despite this evidence, mainstream medicine has often favored what we call eminence-based medicine, relying on influential figures rather than empirical data. The skepticism surrounding vitamin C largely traces back to three pivotal studies published in 1975, two in JAMA and one in the American Journal of Medicine. These studies have shaped the narrative in textbooks and nutritional guidelines, despite exhibiting notable flaws that we carefully examined.
Furthermore, we highlighted misleading reporting in recent randomized trials and critical editorials published in JAMA regarding vitamin C. While our critique largely focuses on this journal, it reflects a broader trend across medical literature, indicating a possible bias against acknowledging the benefits of vitamin C in fighting colds.
Read More
8
We conducted an insightful study to explore whether vitamin C supplementation can help reduce the incidence of common colds among Republic of Korea Army recruits. Our research involved a rigorous randomised, placebo-controlled trial that included 1,444 soldiers over a 30-day period.
In this study, we divided the participants into two groups: one received a daily dose of 6,000 mg of vitamin C while the other received a placebo with no vitamin C. We investigated the soldiers' medical records to see how many of them contracted a cold during the training period.
Our findings showed encouraging results. The group that took vitamin C had a 20% lower risk of developing a common cold compared to those who took the placebo. Interestingly, this protective effect was especially pronounced among recruits in certain training camps, as well as never smokers and those who were physically ranked at level three.
Overall, we observed that vitamin C supplementation appears to be an effective strategy for reducing the incidence of common colds in military settings, which may lead to considerations for implementing vitamin C provisions during basic training for soldiers.
In this study, we divided the participants into two groups: one received a daily dose of 6,000 mg of vitamin C while the other received a placebo with no vitamin C. We investigated the soldiers' medical records to see how many of them contracted a cold during the training period.
Our findings showed encouraging results. The group that took vitamin C had a 20% lower risk of developing a common cold compared to those who took the placebo. Interestingly, this protective effect was especially pronounced among recruits in certain training camps, as well as never smokers and those who were physically ranked at level three.
Overall, we observed that vitamin C supplementation appears to be an effective strategy for reducing the incidence of common colds in military settings, which may lead to considerations for implementing vitamin C provisions during basic training for soldiers.
Read More
Most Useful Reviews
9
Relieves colds effectively
133 people found this helpful
A super remedy for common colds and COVID. I take one tablet three times a day at the first signs of a cold for 3-5 days, then reduce to one daily for up to 14 days. It has helped me recover quickly from illness.
Read More
9
Supports during illness
21 people found this helpful
I've relied on vitamin C during autumn and winter. At the first sign of a common cold, I take one capsule with zinc or elderberry, which often resolves symptoms overnight. It aids the immune system and reduces complications.
Read More
9
Quick recovery
8 people found this helpful
This vitamin C is fantastic! The addition of bioflavonoids enhances absorption. When I think I'm catching a common cold, I take a capsule, and symptoms fade quickly, often within a day.
Read More
Medical Researches
SCIENTIFIC SCORE
Possibly Effective
Based on 8 Researches
7.5
- All Researches
9
We explored the potential benefits of vitamin C as a supplementary treatment for relieving common cold symptoms. By analyzing data from 10 randomized controlled trials, all focused on patients in China, we sought to understand how combining vitamin C with antiviral therapy might enhance recovery.
Our findings revealed that vitamin C supplementation could significantly improve overall efficacy, with a reported relative risk of 1.27. Moreover, it was shown to shorten the time it takes for symptoms to get better and for patients to heal, compared to antiviral therapy alone.
While vitamin C seems to have a positive impact when paired with antiviral drugs, it’s essential to note that its individual effects might not be fully clear due to the combined treatment approach used in the studies. Nonetheless, vitamin C presents itself as a promising addition to traditional cold treatments, helping patients manage their symptoms more effectively.
Our findings revealed that vitamin C supplementation could significantly improve overall efficacy, with a reported relative risk of 1.27. Moreover, it was shown to shorten the time it takes for symptoms to get better and for patients to heal, compared to antiviral therapy alone.
While vitamin C seems to have a positive impact when paired with antiviral drugs, it’s essential to note that its individual effects might not be fully clear due to the combined treatment approach used in the studies. Nonetheless, vitamin C presents itself as a promising addition to traditional cold treatments, helping patients manage their symptoms more effectively.
Read More
8
We conducted a study involving 168 volunteers who were given either a placebo or a vitamin C supplement for 60 days during the cold season. Participants recorded their cold symptoms in a diary, and those on the vitamin C showed promising results.
The groups taking the active treatment reported significantly fewer colds and experienced fewer days of viral illness. Additionally, their severe symptoms lasted less time than those in the placebo group. Most volunteers experienced few side effects and enjoyed using the supplement, finding it more effective than prior vitamin C forms.
Overall, this vitamin C supplement could help prevent colds and ease symptoms, offering hope for better winter health.
The groups taking the active treatment reported significantly fewer colds and experienced fewer days of viral illness. Additionally, their severe symptoms lasted less time than those in the placebo group. Most volunteers experienced few side effects and enjoyed using the supplement, finding it more effective than prior vitamin C forms.
Overall, this vitamin C supplement could help prevent colds and ease symptoms, offering hope for better winter health.
Read More
8
We explored how vitamin C affects the severity of common colds through a comprehensive review of available studies. By including only randomized, placebo-controlled trials where participants received at least 1 gram of vitamin C daily, we aimed to investigate both the overall duration of colds and the intensity of symptoms experienced.
Our analysis found that vitamin C significantly reduced the severity of cold symptoms by about 15%. Interestingly, it appears that the benefits are more pronounced for those experiencing severe symptoms compared to mild ones. In specific comparisons, vitamin C didn’t substantially affect the duration of mild symptoms but had a notable impact on how long severe symptoms lasted.
This insight is crucial, as the common cold often leads to absenteeism at work and school, with more severe symptoms playing a key role in this setback. By highlighting vitamin C's greater effectiveness against intense cold symptoms, we suggest that future research should continue to look into how this vitamin can be utilized in managing cold severity.
Our analysis found that vitamin C significantly reduced the severity of cold symptoms by about 15%. Interestingly, it appears that the benefits are more pronounced for those experiencing severe symptoms compared to mild ones. In specific comparisons, vitamin C didn’t substantially affect the duration of mild symptoms but had a notable impact on how long severe symptoms lasted.
This insight is crucial, as the common cold often leads to absenteeism at work and school, with more severe symptoms playing a key role in this setback. By highlighting vitamin C's greater effectiveness against intense cold symptoms, we suggest that future research should continue to look into how this vitamin can be utilized in managing cold severity.
Read More
8
Vitamin C's potential benefits highlighted
We assessed the longstanding debate about vitamin C’s effectiveness in treating the common cold. This exploration reveals that evidence has consistently indicated that vitamin C can indeed help reduce the duration and severity of cold symptoms in certain circumstances.
However, despite this evidence, mainstream medicine has often favored what we call eminence-based medicine, relying on influential figures rather than empirical data. The skepticism surrounding vitamin C largely traces back to three pivotal studies published in 1975, two in JAMA and one in the American Journal of Medicine. These studies have shaped the narrative in textbooks and nutritional guidelines, despite exhibiting notable flaws that we carefully examined.
Furthermore, we highlighted misleading reporting in recent randomized trials and critical editorials published in JAMA regarding vitamin C. While our critique largely focuses on this journal, it reflects a broader trend across medical literature, indicating a possible bias against acknowledging the benefits of vitamin C in fighting colds.
However, despite this evidence, mainstream medicine has often favored what we call eminence-based medicine, relying on influential figures rather than empirical data. The skepticism surrounding vitamin C largely traces back to three pivotal studies published in 1975, two in JAMA and one in the American Journal of Medicine. These studies have shaped the narrative in textbooks and nutritional guidelines, despite exhibiting notable flaws that we carefully examined.
Furthermore, we highlighted misleading reporting in recent randomized trials and critical editorials published in JAMA regarding vitamin C. While our critique largely focuses on this journal, it reflects a broader trend across medical literature, indicating a possible bias against acknowledging the benefits of vitamin C in fighting colds.
Read More
8
We conducted an insightful study to explore whether vitamin C supplementation can help reduce the incidence of common colds among Republic of Korea Army recruits. Our research involved a rigorous randomised, placebo-controlled trial that included 1,444 soldiers over a 30-day period.
In this study, we divided the participants into two groups: one received a daily dose of 6,000 mg of vitamin C while the other received a placebo with no vitamin C. We investigated the soldiers' medical records to see how many of them contracted a cold during the training period.
Our findings showed encouraging results. The group that took vitamin C had a 20% lower risk of developing a common cold compared to those who took the placebo. Interestingly, this protective effect was especially pronounced among recruits in certain training camps, as well as never smokers and those who were physically ranked at level three.
Overall, we observed that vitamin C supplementation appears to be an effective strategy for reducing the incidence of common colds in military settings, which may lead to considerations for implementing vitamin C provisions during basic training for soldiers.
In this study, we divided the participants into two groups: one received a daily dose of 6,000 mg of vitamin C while the other received a placebo with no vitamin C. We investigated the soldiers' medical records to see how many of them contracted a cold during the training period.
Our findings showed encouraging results. The group that took vitamin C had a 20% lower risk of developing a common cold compared to those who took the placebo. Interestingly, this protective effect was especially pronounced among recruits in certain training camps, as well as never smokers and those who were physically ranked at level three.
Overall, we observed that vitamin C supplementation appears to be an effective strategy for reducing the incidence of common colds in military settings, which may lead to considerations for implementing vitamin C provisions during basic training for soldiers.
Read More
User Reviews
USERS' SCORE
Moderately Good
Based on 41 Reviews
7.9
- All Reviews
- Positive Reviews
- Negative Reviews
9
Relieves colds effectively
133 people found this helpful
A super remedy for common colds and COVID. I take one tablet three times a day at the first signs of a cold for 3-5 days, then reduce to one daily for up to 14 days. It has helped me recover quickly from illness.
Read More
9
Supports during illness
21 people found this helpful
I've relied on vitamin C during autumn and winter. At the first sign of a common cold, I take one capsule with zinc or elderberry, which often resolves symptoms overnight. It aids the immune system and reduces complications.
Read More
9
Quick recovery
8 people found this helpful
This vitamin C is fantastic! The addition of bioflavonoids enhances absorption. When I think I'm catching a common cold, I take a capsule, and symptoms fade quickly, often within a day.
Read More
9
Supports immune system
3 people found this helpful
This vitamin C is my go-to remedy, always in my first aid kit for the common cold. It has a good quality, with 500 mg of non-acidic vitamin C and bioflavonoids that enhance each other’s effects. I typically take 2 capsules daily when I feel unwell, and my immune system feels robust. The capsules are standard size and easy to swallow when taken with water.
Read More
9
Fights common cold
2 people found this helpful
A must-have! This is one of the best vitamin C supplements I've found. It’s suitable for vegetarians and is digestible. At the first sign of a common cold, I take a loading dose, and for prevention, I take one tablet daily. I highly recommend it for good health!
Read More
Frequently Asked Questions
9
Quick recovery
8 people found this helpful
This vitamin C is fantastic! The addition of bioflavonoids enhances absorption. When I think I'm catching a common cold, I take a capsule, and symptoms fade quickly, often within a day.
9
Highly effective
1 people found this helpful
This product is perfect! It really helps me fight off the common cold, and I felt much better the next day after taking it. I definitely recommend buying it!
9
Relieves colds effectively
133 people found this helpful
A super remedy for common colds and COVID. I take one tablet three times a day at the first signs of a cold for 3-5 days, then reduce to one daily for up to 14 days. It has helped me recover quickly from illness.
9
Ongoing prevention
This vitamin C form is high quality, and the bioflavonoids are beneficial. The tablet's size is manageable for daily use. I've noticed significantly fewer colds since I started taking this supplement consistently.
9
Supports during illness
21 people found this helpful
I've relied on vitamin C during autumn and winter. At the first sign of a common cold, I take one capsule with zinc or elderberry, which often resolves symptoms overnight. It aids the immune system and reduces complications.
9
Fights common cold
2 people found this helpful
A must-have! This is one of the best vitamin C supplements I've found. It’s suitable for vegetarians and is digestible. At the first sign of a common cold, I take a loading dose, and for prevention, I take one tablet daily. I highly recommend it for good health!
9
Stomach-friendly
1 people found this helpful
An indispensable product! It’s well digested, not sour, and does not harm my stomach as it contains calcium ascorbate and bioflavonoids, which enhance its bioavailability. I use it with collagen and for treating common colds. It works wonders compared to others. Capsules are convenient, especially for children. I find it easy on the stomach; during a cold, I take up to six a day.
8
We conducted a study involving 168 volunteers who were given either a placebo or a vitamin C supplement for 60 days during the cold season. Participants recorded their cold symptoms in a diary, and those on the vitamin C showed promising results.
The groups taking the active treatment reported significantly fewer colds and experienced fewer days of viral illness. Additionally, their severe symptoms lasted less time than those in the placebo group. Most volunteers experienced few side effects and enjoyed using the supplement, finding it more effective than prior vitamin C forms.
Overall, this vitamin C supplement could help prevent colds and ease symptoms, offering hope for better winter health.
The groups taking the active treatment reported significantly fewer colds and experienced fewer days of viral illness. Additionally, their severe symptoms lasted less time than those in the placebo group. Most volunteers experienced few side effects and enjoyed using the supplement, finding it more effective than prior vitamin C forms.
Overall, this vitamin C supplement could help prevent colds and ease symptoms, offering hope for better winter health.
7
We investigated how vitamin C affects the common cold, focusing on its potential for prevention and treatment. Research indicates that while vitamin C does not prevent colds in the general population when taken at doses over 1 g/day, it has been beneficial for individuals engaging in heavy physical activity, effectively halving their incidence of colds.
Looking into regular supplementation, we found that taking 1 g or more daily can reduce the severity of colds by about 15%. However, when it comes to starting vitamin C after cold symptoms begin, results are less consistent, though higher doses of 6-8 g/day did significantly shorten the duration of colds compared to lower doses.
Interestingly, historical studies showed that vitamin C might prevent pneumonia in specific populations, such as schoolboys or soldiers, but this doesn’t translate to the general public. While some trials indicated potential benefits for pneumonia patients, the evidence is not conclusive.
Overall, we see that given the evidence supporting reduced severity and duration of colds, along with its safety and affordability, it may be worth considering a higher dose of vitamin C for those looking to manage cold symptoms better.
Looking into regular supplementation, we found that taking 1 g or more daily can reduce the severity of colds by about 15%. However, when it comes to starting vitamin C after cold symptoms begin, results are less consistent, though higher doses of 6-8 g/day did significantly shorten the duration of colds compared to lower doses.
Interestingly, historical studies showed that vitamin C might prevent pneumonia in specific populations, such as schoolboys or soldiers, but this doesn’t translate to the general public. While some trials indicated potential benefits for pneumonia patients, the evidence is not conclusive.
Overall, we see that given the evidence supporting reduced severity and duration of colds, along with its safety and affordability, it may be worth considering a higher dose of vitamin C for those looking to manage cold symptoms better.
8
We explored how vitamin C affects the severity of common colds through a comprehensive review of available studies. By including only randomized, placebo-controlled trials where participants received at least 1 gram of vitamin C daily, we aimed to investigate both the overall duration of colds and the intensity of symptoms experienced.
Our analysis found that vitamin C significantly reduced the severity of cold symptoms by about 15%. Interestingly, it appears that the benefits are more pronounced for those experiencing severe symptoms compared to mild ones. In specific comparisons, vitamin C didn’t substantially affect the duration of mild symptoms but had a notable impact on how long severe symptoms lasted.
This insight is crucial, as the common cold often leads to absenteeism at work and school, with more severe symptoms playing a key role in this setback. By highlighting vitamin C's greater effectiveness against intense cold symptoms, we suggest that future research should continue to look into how this vitamin can be utilized in managing cold severity.
Our analysis found that vitamin C significantly reduced the severity of cold symptoms by about 15%. Interestingly, it appears that the benefits are more pronounced for those experiencing severe symptoms compared to mild ones. In specific comparisons, vitamin C didn’t substantially affect the duration of mild symptoms but had a notable impact on how long severe symptoms lasted.
This insight is crucial, as the common cold often leads to absenteeism at work and school, with more severe symptoms playing a key role in this setback. By highlighting vitamin C's greater effectiveness against intense cold symptoms, we suggest that future research should continue to look into how this vitamin can be utilized in managing cold severity.
7
We explored the effects of vitamin C on common cold symptoms, particularly focusing on how it may assist in alleviating those pesky issues that come with viral respiratory infections. The research indicates that taking vitamin C, especially at the onset of symptoms, might help reduce the duration of discomfort, such as fever, chills, and chest pain.
Additionally, we noted that vitamin C could potentially reduce the severity of symptoms related to common cold-induced asthma and might decrease the need for hospital admissions in some cases. While the overall evidence about vitamin C's effectiveness isn’t exhaustive, oral consumption may provide relief for many experiencing early stages of viral infections.
However, we must emphasize that there is currently no strong evidence supporting the use of vitamin C specifically for preventing or treating COVID-19, which shares similar symptoms with typical respiratory infections. Therefore, while vitamin C appears beneficial for common cold symptoms, further high-quality research is essential to validate its efficacy and safety unequivocally.
Additionally, we noted that vitamin C could potentially reduce the severity of symptoms related to common cold-induced asthma and might decrease the need for hospital admissions in some cases. While the overall evidence about vitamin C's effectiveness isn’t exhaustive, oral consumption may provide relief for many experiencing early stages of viral infections.
However, we must emphasize that there is currently no strong evidence supporting the use of vitamin C specifically for preventing or treating COVID-19, which shares similar symptoms with typical respiratory infections. Therefore, while vitamin C appears beneficial for common cold symptoms, further high-quality research is essential to validate its efficacy and safety unequivocally.
5
We explored the role of Vitamin C in managing common cold symptoms through a review of existing studies. The focus was to understand whether this popular vitamin could help in reducing the incidence of the common cold or its severity.
Our findings revealed that Vitamins C, D, and E did not notably lower the incidence of the common cold in the general population. However, we did discover something interesting: Vitamin C appeared to be beneficial in individuals experiencing physical or environmental stress, reducing the incidence of the cold by half in those specific circumstances.
Moreover, while Vitamin C did not prevent colds, it did play a role in shortening their duration and minimizing the severity of symptoms. On the other hand, large doses of Vitamin A showed no effects on pneumonia recovery, and Zinc had some benefits for children under five, particularly in improving clinical deterioration.
Despite the inconclusive results regarding Vitamin C and overall cold prevention, it seems that taking this vitamin during stressful periods may still offer some advantages. Overall, while the results are mixed, there's potential for Vitamin C to be a helpful component in managing colds for specific groups.
Our findings revealed that Vitamins C, D, and E did not notably lower the incidence of the common cold in the general population. However, we did discover something interesting: Vitamin C appeared to be beneficial in individuals experiencing physical or environmental stress, reducing the incidence of the cold by half in those specific circumstances.
Moreover, while Vitamin C did not prevent colds, it did play a role in shortening their duration and minimizing the severity of symptoms. On the other hand, large doses of Vitamin A showed no effects on pneumonia recovery, and Zinc had some benefits for children under five, particularly in improving clinical deterioration.
Despite the inconclusive results regarding Vitamin C and overall cold prevention, it seems that taking this vitamin during stressful periods may still offer some advantages. Overall, while the results are mixed, there's potential for Vitamin C to be a helpful component in managing colds for specific groups.
8
We conducted an insightful study to explore whether vitamin C supplementation can help reduce the incidence of common colds among Republic of Korea Army recruits. Our research involved a rigorous randomised, placebo-controlled trial that included 1,444 soldiers over a 30-day period.
In this study, we divided the participants into two groups: one received a daily dose of 6,000 mg of vitamin C while the other received a placebo with no vitamin C. We investigated the soldiers' medical records to see how many of them contracted a cold during the training period.
Our findings showed encouraging results. The group that took vitamin C had a 20% lower risk of developing a common cold compared to those who took the placebo. Interestingly, this protective effect was especially pronounced among recruits in certain training camps, as well as never smokers and those who were physically ranked at level three.
Overall, we observed that vitamin C supplementation appears to be an effective strategy for reducing the incidence of common colds in military settings, which may lead to considerations for implementing vitamin C provisions during basic training for soldiers.
In this study, we divided the participants into two groups: one received a daily dose of 6,000 mg of vitamin C while the other received a placebo with no vitamin C. We investigated the soldiers' medical records to see how many of them contracted a cold during the training period.
Our findings showed encouraging results. The group that took vitamin C had a 20% lower risk of developing a common cold compared to those who took the placebo. Interestingly, this protective effect was especially pronounced among recruits in certain training camps, as well as never smokers and those who were physically ranked at level three.
Overall, we observed that vitamin C supplementation appears to be an effective strategy for reducing the incidence of common colds in military settings, which may lead to considerations for implementing vitamin C provisions during basic training for soldiers.
References
- Van Straten M, Josling P. Preventing the common cold with a vitamin C supplement: a double-blind, placebo-controlled survey. Adv Ther. 2002;19:151.
- Hemilä H, Chalker E. Vitamin C for the common cold and pneumonia. Pol Arch Intern Med. 2025;135. doi:10.20452/pamw.16926
- Hemilä H, Chalker E. Vitamin C reduces the severity of common colds: a meta-analysis. BMC Public Health. 2023;23:2468. doi:10.1186/s12889-023-17229-8
- Hemilä H, Chalker E. Bias against Vitamin C in Mainstream Medicine: Examples from Trials of Vitamin C for Infections. Life (Basel). 2022;12. doi:10.3390/life12010062
- Murni IK, Prawirohartono EP, Triasih R. Potential Role of Vitamins and Zinc on Acute Respiratory Infections Including Covid-19. Glob Pediatr Health. 2021;8:2333794X211021739. doi:10.1177/2333794X211021739
- Ran L, Zhao W, Wang H, Zhao Y, Bu H. Vitamin C as a Supplementary Therapy in Relieving Symptoms of the Common Cold: A Meta-Analysis of 10 Randomized Controlled Trials. Biomed Res Int. 2020;2020:8573742. doi:10.1155/2020/8573742
- Schloss J, Lauche R, Harnett J, Hannan N, Brown D, et al. Efficacy and safety of vitamin C in the management of acute respiratory infection and disease: A rapid review. Adv Integr Med. 2020;7:187. doi:10.1016/j.aimed.2020.07.008
- Kim TK, Lim HR, Byun JS. Vitamin C supplementation reduces the odds of developing a common cold in Republic of Korea Army recruits: randomised controlled trial. BMJ Mil Health. 2022;168:117. doi:10.1136/bmjmilitary-2019-001384
