Overview

SCIENTIFIC SCORE
Moderately Effective
Based on 2 Researches
8
USERS' SCORE
Good
Based on 24 Reviews
8.9
Supplement Facts
Serving Size:  1 Caplet
Amount Per Serving
%DV
Vitamin C (as Ascorbic Acid)
1,000 mg
1,111%

Top Medical Research Studies

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.
Read More
9
Vitamin C improves cold tolerance
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

10
Quick cold relief
Brilliant! It stopped a cold immediately! At the first sign, I took five capsules and the cold ceased.
Read More
10
No colds lately
Easy! I haven't had a cold at all this past winter, while I usually have several. There's no doubt in my mind that this has certainly helped.
Read More
8.8
Supports immune health
A fantastic supplement that has aided me in maintaining a healthy immune system. Nature's Bounty Vitamin C + Rose Hips is beneficial for my active lifestyle. This product has been a lifesaver. I appreciate that it contains 1000mg of Vitamin C per caplet, more than enough for my daily needs. Rose hips in this supplement are a significant advantage, known for supporting immune health for centuries. It's easy to swallow, free of artificial additives, and has helped me stay healthy during cold seasons. I highly recommend it.
Read More

Medical Researches

SCIENTIFIC SCORE
Moderately Effective
Based on 2 Researches
8
  • All Researches
9
Vitamin C improves cold tolerance
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
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.
Read More

User Reviews

USERS' SCORE
Good
Based on 24 Reviews
8.9
  • All Reviews
  • Positive Reviews
  • Negative Reviews
10
Quick cold relief
Brilliant! It stopped a cold immediately! At the first sign, I took five capsules and the cold ceased.
Read More
10
No colds lately
Easy! I haven't had a cold at all this past winter, while I usually have several. There's no doubt in my mind that this has certainly helped.
Read More
8.8
Supports immune health
A fantastic supplement that has aided me in maintaining a healthy immune system. Nature's Bounty Vitamin C + Rose Hips is beneficial for my active lifestyle. This product has been a lifesaver. I appreciate that it contains 1000mg of Vitamin C per caplet, more than enough for my daily needs. Rose hips in this supplement are a significant advantage, known for supporting immune health for centuries. It's easy to swallow, free of artificial additives, and has helped me stay healthy during cold seasons. I highly recommend it.
Read More
9.5
Quick relief
Excellent! A very good vitamin. At the first sign of a cold, I took one capsule in the morning and evening. All symptoms disappeared.
Read More
9.5
Prevents colds
Good product at a fair price. I take this throughout the year and can't recall the last time I had a cold!
Read More

Frequently Asked Questions

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.

Ascorbic acid, commonly known as vitamin C, is a water-soluble vitamin that is essential for various bodily functions, including the synthesis of collagen, the absorption of iron, and the maintenance of a healthy immune system. Found naturally in a variety of fruits and vegetables, especially citrus fruits, strawberries, kiwi, and bell peppers, it serves as a potent antioxidant, helping to protect cells from damage by free radicals. Given that the human body cannot synthesize ascorbic acid on its own, it must be obtained through diet or supplementation.

In addition to its fundamental role in supporting overall health, ascorbic acid has garnered interest for its potential benefits in skincare and wound healing. Topical applications of vitamin C can help reduce the appearance of fine lines and improve skin texture, making it a popular ingredient in various cosmetic formulations. Additionally, it plays a crucial role in the body's ability to repair tissues and produce important neurotransmitters. For those looking to boost their vitamin C intake, incorporating a variety of vitamin C-rich foods into your diet or considering a supplement can be effective strategies.

Ascorbic acid, commonly known as vitamin C, has long been touted as a remedy for the common cold. While many people believe that taking vitamin C can either prevent a cold or reduce its duration and severity, clinical research offers mixed conclusions. Some studies suggest that regular supplementation of vitamin C can slightly reduce the duration of colds, especially in individuals exposed to extreme physical stress or cold environments, but it is less effective in the general population.

For those who are already experiencing cold symptoms, higher doses of vitamin C may provide minimal benefits. It's important to note that taking large amounts of ascorbic acid can lead to gastrointestinal discomfort and other side effects. Instead of relying solely on vitamin C supplements, incorporating a balanced diet rich in fruits and vegetables—such as citrus fruits, bell peppers, and broccoli—can help support your immune system. Ultimately, while vitamin C can contribute to overall health, it shouldn't be seen as a cure-all for the common cold.

Based on user reviews, the timeline for seeing results when taking this vitamin C supplement for cold symptoms can vary. Many users report feeling relief quite rapidly, often after taking the supplement at the initial signs of illness. For instance, one user mentions, "It stopped a cold immediately!" after taking five capsules at the first sign of a cold (Read Review). Similarly, another user indicated that they took one capsule at the onset of symptoms, which led to all their symptoms disappearing swiftly (Read Review).

Moreover, some users have reported that consistent intake of the supplement can help to prevent colds altogether, suggesting a long-term benefit in addition to more immediate relief (Read Review). While it seems that taking the supplement at the first signs of a cold is key to experiencing quicker results, regular usage also contributes to an enhanced immune system over time (Read Review). Overall, most users seem to find that they can expect noticeable effects within a short timeframe when taken promptly.

Vitamin C supplementation has been studied for its effects on the common cold, with interesting findings emerging from multiple studies. While general supplementation beyond one gram daily shows limited benefits in preventing colds for most people, it has demonstrated a reduction in cold severity by about 15%. Notably, individuals engaging in heavy physical activities experienced a 50% reduction in cold incidence when vitamin C was included in their regimen. Some therapeutic research indicates that high doses of vitamin C (6-8 grams per day) could significantly reduce the duration of a cold, suggesting a potential benefit for those seeking relief during illness [1].

However, the evidence for vitamin C's effectiveness is somewhat mixed, especially regarding its role in treating colds once symptoms have appeared, with inconsistent results across studies on its therapeutic impact. Although the majority of research focuses on general applications of vitamin C, its role in alleviating symptoms and shortening cold duration might make it a worthwhile supplement for some. Given its safety profile and affordability, trying out a higher dose could be beneficial. Overall, while vitamin C is not a guaranteed cold cure, it shows potential for mitigating symptoms, especially when used strategically during cold and flu season [1].

Users report a variety of positive experiences with this vitamin C supplement, highlighting its effectiveness in alleviating cold symptoms and boosting immunity. Many indicate that taking the supplement at the first sign of illness yields quick results, with some claiming that their cold symptoms ceased entirely after just a few doses (Read Review), (Read Review). Others mention that regular use not only helps when they feel unwell but also plays a significant role in preventing colds during high-risk seasons (Read Review), (Read Review).

Furthermore, long-term users have suggested that consistent intake improves overall resistance to illness, making them less susceptible to colds compared to before they started the supplement (Read Review), (Read Review). While results can vary from person to person, many users express satisfaction with the product's ability to boost their immune defenses and provide prompt relief from symptoms when taken during the onset of a cold.

Users report a generally positive experience when combining this vitamin C supplement with other supplements for managing cold symptoms. For instance, one reviewer states that they take vitamin C along with zinc and vitamin D at the first signs of a cold, highlighting the effectiveness of this combination (Read Review). This suggests that the added vitamins may enhance the immune-boosting properties of vitamin C, providing more robust protection or faster relief from symptoms.

Moreover, several users emphasize the importance of taking vitamin C regularly, especially during cold and flu seasons, which could work synergistically with other health supplements in their routine. Another user mentions how vitamin C has become a staple for them, particularly when taken in "courses" combined with a healthy lifestyle to fend off colds (Read Review). This routine appears to be beneficial, leading many to express increased resistance to colds over time, which might be further amplified through supplementation with other vitamins and minerals during peak illness periods.

According to recent research, the optimal dose of Ascorbic Acid, or vitamin C, for treating colds appears to be between 6 to 8 grams per day. While routine doses exceeding 1 gram didn’t exhibit substantial benefits for the general population, participants involved in heavy physical activities experienced a noteworthy reduction in cold incidence with such supplementation. Additionally, regular consumption of about 1 gram daily was linked to a 15% reduction in cold severity, further accentuating vitamin C’s potential benefits in managing cold symptoms [1].

Interestingly, when taken after the onset of cold symptoms, higher doses of 6-8 grams have been shown in some trials to effectively shorten the duration of colds compared to lower doses. Given the safety and affordability of vitamin C, trying this higher dosage may be worth exploring for individuals interested in alleviating their cold symptoms or reducing the duration of their illness [1].

10
Quick cold relief
Brilliant! It stopped a cold immediately! At the first sign, I took five capsules and the cold ceased.
9.5
Quick relief
Excellent! A very good vitamin. At the first sign of a cold, I took one capsule in the morning and evening. All symptoms disappeared.
9.5
Dependable helper
I love taking Nature's Bounty vitamin C. No other brand works as effectively. When taken daily, it prevents me from catching a cold. If I skip it and feel unwell, this always rescues me!
8.8
Boosts immunity
Good day, everyone. I would like to share my thoughts on these vitamins. This vitamin C is excellent, with good volume and composition. I take it in courses, especially during cold and virus seasons, as it helps my immune system to fend off illness. I highly recommend it and will order more.
9.5
Prevents colds
Good product at a fair price. I take this throughout the year and can't recall the last time I had a cold!
9
Better resistance
After purchasing this product multiple times, my resistance improved, making it harder to catch a cold.
8.8
Cold prevention
It helps me avoid catching a cold for years.
8.8
Effective for cold
Excellent vitamin C. I take it at the first sign of a cold, along with zinc and vitamin D. I will buy more.
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.

References

  1. Hemilä H, Chalker E. Vitamin C for the common cold and pneumonia. Pol Arch Intern Med. 2025;135. doi:10.20452/pamw.16926
  2. 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. doi:10.3390/ijms251810093
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