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.
Read More
9
Vitamin C improves cold tolerance
Application of Exogenous Ascorbic Acid Enhances Cold Tolerance in Tomato Seedlings through Molecular and Physiological Responses.
We explored the effects of ascorbic acid, commonly known as vitamin C, on cold tolerance in tomato seedlings. In our study, we discovered that applying vitamin C significantly boosts the seedlings' ability to handle cold stress.
By enhancing the antioxidant defense system, vitamin C treatment increased the enzyme activity in the seedlings' leaves. Additionally, it raised levels of important compounds such as proline, sugar, and abscisic acid, all of which play crucial roles in plant stress responses.
Our observations showed that vitamin C also protects the photosynthesis system of tomato seedlings. This implies that it helps maintain chlorophyll function, which is critical for the plant's overall health, especially under cold conditions.
Moreover, we found that vitamin C treatments led to increased expression of genes linked to antioxidant enzymes and cold response mechanisms. Overall, our findings suggest that exogenous vitamin C is a beneficial approach to improve cold tolerance in tomatoes and may provide helpful insights for farmers looking to cultivate hardier varieties during colder months.
Read More
Most Useful Reviews
9
Prevents symptoms effectively
28 people found this helpful
Vitamin C saved me all winter and spring. At the first sign of a cold, I took an increased dose and the symptoms disappeared by morning. Given my tendency towards acute respiratory infections and the fact that I barely fell ill for two seasons, I found this vitamin to be excellent! I’ll be ordering more.
Read More
9
Quick cold recovery
24 people found this helpful
Vitamin C is here to invigorate! I'm not venturing into any debate on real vitamin C versus ascorbic acid (do your own research!) but here’s my observation... First off, I'm sceptical about supplements. This hasn't transformed my life, but I managed to recover from a cold that was circulating in record time. My wife, her sister (a teacher, where these things often begin), and her sister’s boyfriend all caught it first; they were bedridden for nearly two weeks. I only felt a bit tired for one day. Unlike previous experiences with colds where I needed Dayquil and Nyquil for about a week, this time, I had just a hint of tiredness. I felt the onset, but it barely stopped me. I do hope the next cold passes just as swiftly!
Read More
9
Effective against colds
10 people found this helpful
Very satisfied! As soon as signs of a cold appear, I take 2 capsules with breakfast and dinner, and within one or two days, everything passes! Over 1.5 years of use, I’ve never developed a fever. I definitely recommend this.
We explored the effects of ascorbic acid, commonly known as vitamin C, on cold tolerance in tomato seedlings. In our study, we discovered that applying vitamin C significantly boosts the seedlings' ability to handle cold stress.
By enhancing the antioxidant defense system, vitamin C treatment increased the enzyme activity in the seedlings' leaves. Additionally, it raised levels of important compounds such as proline, sugar, and abscisic acid, all of which play crucial roles in plant stress responses.
Our observations showed that vitamin C also protects the photosynthesis system of tomato seedlings. This implies that it helps maintain chlorophyll function, which is critical for the plant's overall health, especially under cold conditions.
Moreover, we found that vitamin C treatments led to increased expression of genes linked to antioxidant enzymes and cold response mechanisms. Overall, our findings suggest that exogenous vitamin C is a beneficial approach to improve cold tolerance in tomatoes and may provide helpful insights for farmers looking to cultivate hardier varieties during colder months.
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.
Read More
User Reviews
USERS' SCORE
Good
Based on 229 Reviews
8.2
All Reviews
Positive Reviews
Negative Reviews
9
Prevents symptoms effectively
28 people found this helpful
Vitamin C saved me all winter and spring. At the first sign of a cold, I took an increased dose and the symptoms disappeared by morning. Given my tendency towards acute respiratory infections and the fact that I barely fell ill for two seasons, I found this vitamin to be excellent! I’ll be ordering more.
Read More
9
Quick cold recovery
24 people found this helpful
Vitamin C is here to invigorate! I'm not venturing into any debate on real vitamin C versus ascorbic acid (do your own research!) but here’s my observation... First off, I'm sceptical about supplements. This hasn't transformed my life, but I managed to recover from a cold that was circulating in record time. My wife, her sister (a teacher, where these things often begin), and her sister’s boyfriend all caught it first; they were bedridden for nearly two weeks. I only felt a bit tired for one day. Unlike previous experiences with colds where I needed Dayquil and Nyquil for about a week, this time, I had just a hint of tiredness. I felt the onset, but it barely stopped me. I do hope the next cold passes just as swiftly!
Read More
9
Effective against colds
10 people found this helpful
Very satisfied! As soon as signs of a cold appear, I take 2 capsules with breakfast and dinner, and within one or two days, everything passes! Over 1.5 years of use, I’ve never developed a fever. I definitely recommend this.
Read More
9
Boosts immunity effectively
9 people found this helpful
The wonderful vitamin! My life has changed since I began taking vitamin C daily. I used to suffer frequent colds and fatigue. Now, after taking vitamin C regularly, my immunity has improved, and I rarely get colds, and when I do, they’re mild.
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9
Effective for children
7 people found this helpful
Excellent Vitamin C! I really like this vitamin. I take it at the first sign of a cold, and the illness doesn’t progress (I also consume colostrum and propolis). I love its economy, as I give it to my children at the first sign of a cold. I open the capsule, mix it in water, and it lasts for 1-2 days, depending on the severity of symptoms, making it much more economical than children's vitamin C.
Cold is a term that refers to a state of low temperature, often associated with a perceptibly chilly environment or the sensation of being cool to the touch. Scientifically, cold is relative to the presence and movement of heat, which is a measure of energy within matter. In everyday terms, we experience cold through weather changes, such as during winter months, and it can also be described in the context of specific temperature ranges – for example, temperatures below 32 degrees Fahrenheit (0 degrees Celsius) generally signify freezing conditions, which can impact outdoor activities, personal comfort, and various ecological systems.
Moreover, the sensation of cold is not solely dependent on temperature; factors like humidity and wind chill can enhance the feeling of coldness. When discussing cold in terms of human health, prolonged exposure to cold conditions can lead to hypothermia or frostbite if body heat is not effectively maintained. Hence, it's crucial to dress appropriately and take necessary precautions during colder months to prevent adverse effects. Understanding the concept of cold can help individuals better prepare for seasonal changes and ensure their comfort and safety.
Vitamin C, also known as ascorbic acid, is a water-soluble vitamin that plays a critical role in numerous bodily functions. As an essential nutrient, it contributes to the growth and repair of tissues in the body, and it is vital for the production of collagen, an important protein that helps maintain skin, cartilage, tendons, ligaments, and blood vessels. Additionally, Vitamin C acts as a powerful antioxidant, which means it helps combat free radicals—unstable molecules that can cause oxidative stress and contribute to various chronic diseases.
Moreover, Vitamin C enhances iron absorption from plant-based foods, making it a vital component for those following vegetarian or vegan diets. While many people get sufficient Vitamin C from a well-balanced diet that includes fruits and vegetables like oranges, strawberries, kiwi, broccoli, and bell peppers, some individuals might require supplementation. It's generally recommended to stay within the daily intake guidelines, as excessive consumption can lead to gastrointestinal disturbances. Overall, Vitamin C is not just a skincare celebrity—it's a fundamental part of maintaining overall health and well-being.
Vitamin C has long been touted as a potential remedy for the common cold, but the evidence regarding its effectiveness is mixed. Several studies suggest that while vitamin C does not necessarily prevent colds, it may reduce the severity and duration of symptoms if taken at the onset of illness or during periods of high stress. For instance, a review published in the Cochrane Database indicated that regular intake of vitamin C might shorten the duration of colds by about a day, especially in individuals under physical stress, like athletes.
It's important to note that while vitamin C can be beneficial, it should not be viewed as a cure-all. Maintaining a balanced diet with adequate vitamin C through fruits and vegetables, such as citrus fruits, strawberries, and bell peppers, is recommended for overall immune support. If you are considering taking vitamin C supplements specifically to combat cold symptoms, consulting with a healthcare professional is advised to determine the appropriate dosage and to ensure that it aligns with your health needs.
Based on user reviews, most individuals report seeing results from this vitamin C supplement within a short timeframe—typically one to three days after increasing their intake at the first signs of a cold. For example, one user mentioned that symptoms disappeared by the next morning after taking an increased dose, while others noted that their cold symptoms were significantly reduced within one to two days of consistent use Read Review, Read Review.
Frequent themes include individuals successfully preventing illness or alleviating symptoms in 1-2 days, particularly when they increase their dosage during the onset of a cold Read Review, Read Review. Many users found that the key to effectively shortening colds lies in early intervention—taking two to four capsules right away seems to enhance efficacy Read Review, Read Review. Overall, it appears that prompt usage yields the best results in combating cold symptoms.
Vitamin C has been a topic of significant interest regarding its effects on the common cold. Research shows that, while taking more than 1 gram of vitamin C daily does not markedly prevent colds in the general population, specific groups, particularly those engaged in heavy physical exertion, experienced a 50% reduction in cold incidence with supplementation [1]. Additionally, consistent intake of 1 gram or more daily was linked to a 15% decrease in the severity of cold symptoms. Notably, larger doses during a cold episode (6-8 grams) have been shown to potentially shorten the duration of the illness [1].
However, it is essential to approach these findings with caution. While vitamin C can alleviate symptoms and shorten the duration of colds, its efficacy can vary based on individual circumstances. The mixed results in therapeutic trials regarding timing and dosage mean that personalization may be necessary to determine the optimal benefit [1]. Therefore, considering a regimen of 6-8 grams daily of vitamin C may be a viable option for those seeking to manage cold symptoms more effectively.
Users have reported significant improvements in their cold symptoms after taking this vitamin C supplement. Many individuals mention that by increasing their dosage at the first signs of a cold, they either prevent the illness altogether or experience a rapid reduction in symptoms. For instance, one user shared that symptoms completely disappeared by the next morning after taking a higher dose Read Review. Others noted that their cold symptoms improved dramatically within one to two days of consistent use, with reports of avoidance of fevers or severe illnesses altogether over extended periods of supplementation Read Review.
The overall consensus suggests that individuals who start taking the supplement promptly often see the best results. Users have attributed their newfound resilience to frequent colds, decreased symptom severity, and shorter durations of illness to regular vitamin C intake. For example, one user stated the enhancement of their immunity led to fewer colds and milder symptoms when they did occur Read Review. However, it's important to remember that results can vary from person to person, and what works for one may not hold the same efficacy for another.
Based on user reviews, many individuals report positive experiences when combining this vitamin C supplement with other supplements to combat colds. Users commonly mentioned pairing it with zinc, vitamin D, and in some cases, herbal ingredients like elderberry, which they found enhanced the effectiveness of the vitamin C in alleviating symptoms or preventing illness altogether. For example, one user noted that combining vitamin C with zinc led to swift recovery during colds, with symptoms significantly reduced within one to two days of use Read Review. Another user pointed out that alongside elderberry, their symptoms were minimized or completely alleviated by the morning after increasing their dosage Read Review.
Additionally, some users indicated that they enjoy taking vitamin C in conjunction with other healthful supplements like coenzyme Q10 or various herbs for added benefits, emphasizing a comprehensive approach to boosting immunity and reducing cold severity Read Review. Overall, these insights highlight that while vitamin C is effective on its own, many users believe that stacking it with other supportive vitamins or natural remedies can provide even greater protection during cold seasons.
According to the research conducted on the effects of Vitamin C on the common cold, an optimal dosage for effective treatment seems to hover around 6-8 grams per day. While standard recommendations generally suggest that daily intake of 1 gram is sufficient for most people and shows limited benefits for cold prevention, those engaged in heavy physical activities experienced a notable reduction in cold incidence with Vitamin C supplementation at this higher dose. Furthermore, regular intake of around 1 gram daily was linked to a 15% decrease in the severity of cold symptoms, suggesting that maintaining some level of supplementation can provide benefits during cold season [1].
Interestingly, while larger doses of Vitamin C (between 6 to 8 grams) were effective in shortening the duration of colds in certain studies, the results were inconsistent when this vitamin was administered post-onset of symptoms. Therefore, for individuals looking to potentially mitigate cold symptoms or shorten illness duration, considering a daily intake of 6-8 grams might be worthwhile, keeping in mind the overall safety and affordability of Vitamin C as a supplement [1].
9
Prevents symptoms effectively
28 people found this helpful
Vitamin C saved me all winter and spring. At the first sign of a cold, I took an increased dose and the symptoms disappeared by morning. Given my tendency towards acute respiratory infections and the fact that I barely fell ill for two seasons, I found this vitamin to be excellent! I’ll be ordering more.
9
Effective against colds
10 people found this helpful
Very satisfied! As soon as signs of a cold appear, I take 2 capsules with breakfast and dinner, and within one or two days, everything passes! Over 1.5 years of use, I’ve never developed a fever. I definitely recommend this.
10
Instant cold relief
An excellent remedy for the first signs of a cold. It gets me back on my feet in just a day with no signs of a cold left; I highly recommend it.
10
Family essential
This vitamin C is exceptional! We always buy in bulk, as our whole family takes it during colds or illness. It helps restore health in 1-2 days, especially when combined with zinc.
10
Recommended for colds
Natural vitamin C with beneficial ingredients. After taking 2 capsules a day, my cold was gone. It's great for adults, particularly those who often catch colds.
10
Quick cold relief
This product really works! I rely on it when I’m ill. During the first days of sickness, I double my vitamin C intake, and within two days my cold disappears without needing medication.
9
Boosts immunity effectively
9 people found this helpful
The wonderful vitamin! My life has changed since I began taking vitamin C daily. I used to suffer frequent colds and fatigue. Now, after taking vitamin C regularly, my immunity has improved, and I rarely get colds, and when I do, they’re mild.
9
Reduced symptoms
1 people found this helpful
I rely on vitamin C during autumn and winter. At the first hint of a cold, I increase my intake along with elderberry, which minimises or completely alleviates my symptoms by morning. Given my tendency to get sick, they are highly beneficial for me.
10
Irreplaceable cold remedy
4 people found this helpful
This natural vitamin C is fantastic! With a cold, it's irreplaceable. The moment I sense I'm unwell, I take 2g (4 capsules) in the mornings, followed by 2 capsules for a few more days – I don’t get sick! I combine it with Coenzyme 400 mg for added benefits and recommend it highly.
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.
References
Hemilä H, Chalker E. Vitamin C for the common cold and pneumonia. Pol Arch Intern Med. 2025;135. 10.20452/pamw.16926
Wang X, Ran C, Fu Y, Han L, Yang X, et al. Application of Exogenous Ascorbic Acid Enhances Cold Tolerance in Tomato Seedlings through Molecular and Physiological Responses. Int J Mol Sci. 2024;25. 10.3390/ijms251810093