Last update
5/3/2026
Reviewed By
Overview
SCIENTIFIC SCORE
Moderately Effective
Based on 2 Researches
8
USERS' SCORE
Good
Based on 247 Reviews
8
Supplement Facts
Serving Size: 2 VegCaps
Serving Per Container: 125
Amount Per Serving
%DV
Vitamin C (As ascorbic Acid, Rose Hips, Acerola Cherry)
1,000 mg
1,111%
Bioflavonoid Concentrate (From Lemon)
500 mg
*
Rutin Concentrate
100 mg
*
Hesperidin Concentrate
100 mg
*
Citrus Pectin
30 mg
*
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.
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
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.
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
8
Supports immunity
94 people found this helpful
I took this vitamin during the cold season in a small jar, which helped increase my immunity; I’m getting colds less often now. I’ve now bought a larger supply of 360 capsules, which is far more cost-effective.
Read More
7
Supports cold recovery
31 people found this helpful
Good, great firm. We drink it with the whole family during colds. Dad helped zinc shock for quick recovery from Covid.
Read More
5
High-quality vitamin C
22 people found this helpful
This is probably the best vitamin C for price and quality, due to its rich bioflavonoid content. I normally take one capsule daily, but when I have cold symptoms, I increase it to two or three capsules. My only feedback is that I would prefer a non-irritating form of vitamin C, like Calcium Ascorbate.
Read More
Medical Researches
SCIENTIFIC SCORE
Moderately Effective
Based on 2 Researches
8
- All Researches
9
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.
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.
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 247 Reviews
8
- All Reviews
- Positive Reviews
- Negative Reviews
8
Supports immunity
94 people found this helpful
I took this vitamin during the cold season in a small jar, which helped increase my immunity; I’m getting colds less often now. I’ve now bought a larger supply of 360 capsules, which is far more cost-effective.
Read More
7
Supports cold recovery
31 people found this helpful
Good, great firm. We drink it with the whole family during colds. Dad helped zinc shock for quick recovery from Covid.
Read More
5
High-quality vitamin C
22 people found this helpful
This is probably the best vitamin C for price and quality, due to its rich bioflavonoid content. I normally take one capsule daily, but when I have cold symptoms, I increase it to two or three capsules. My only feedback is that I would prefer a non-irritating form of vitamin C, like Calcium Ascorbate.
Read More
9
Gifts for others
13 people found this helpful
Good enough to give as gifts! We discovered this product years ago when our family kept catching colds. We take it whenever we feel unwell and seem close to catching a cold. We pop two at night, and by morning, we feel better. It’s truly impressive how effective this product is, and we’ve recommended it to friends and co-workers. Kudos to Healthy Buy Vitamins, the vendor!
Read More
10
Cold-free years
7 people found this helpful
Great product, keeps the colds away. I swear by this in preventing colds. I take one capsule daily and can honestly say I haven't caught a cold or flu in years, combining it with ACES and Colostrum.
Read More
Frequently Asked Questions
10
Quick cold relief
I started with one capsule when I fell ill with ARVI, experiencing body aches and weakness, but after taking it, my symptoms vanished by morning! I also recommend it for those with sweet cravings, as it helps in combination with berberine.
8
Immediate energising effect
With ARVI, at the first sign of a cold, I take two of these tablets. By the next day, I continue with one tablet a day. The effect is noticeable the very next morning—if my throat starts to ache, I have a slight cough, or my temperature rises, I take two pills, and by the morning, I feel energised again.
10
Cold relief
I have been taking these vitamins for just over a month at a dosage of 1000 mg. Recently, I experienced a sore throat and runny nose but refrained from taking additional medications. Now, four days later, not a trace of the cold remains. I highly recommend it!
10
Avoids colds effectively
4 people found this helpful
This is my third bottle (the previous two were 250 caps). I am thrilled with how this Vitamin C works. I am certain it is effective as I tried a cheaper brand in between, but unfortunately, I caught colds after three days. Thanks to this product and Our Creator, since the pandemic started, I have not contracted COVID-19. Of course, everyone's experience may differ, but I recommend giving this one a try, especially the 100 caps bottle which is more affordable.
10
Cold symptoms relief
I appreciate this vitamin C. When I sense a cold, I take 2-3 capsules during the day and then, magically, the symptoms disappear by the next day! It's also effective for healing lip herpes if I take 2-4 capsules daily. Excellent vitamins.
8
Effective cold recovery
2 people found this helpful
Natural vitamin C has significant benefits for human health, particularly in boosting immunity against viruses and colds. I administered it to my mother after she caught a cold, and she recovered within two days. Thank God for that! I strongly recommend it.
9
Prevents colds effectively
5 people found this helpful
Solaray Super Bio C is fantastic! I have taken it for over five years, keeping my immune system strong and colds at bay. When I run low, I can feel the difference in my health. Other buffered C's do not compare, as this one suits me best. I take it with my Garden of Life Ultra Probiotics every morning on an empty stomach without any digestive issues. Non-acidic, it releases in two stages for constant benefits.
10
Stops cold effectively
1 people found this helpful
Good product! The large capsule size and quality ingredients are beneficial, as I take one or two capsules daily alongside ascorbic acid. It definitely stops colds!
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.
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
