Overview
SCIENTIFIC SCORE
Moderately Effective
Based on 2 Researches
8
USERS' SCORE
Good
Based on 171 Reviews
8.1
Supplement Facts
Serving Size: 1 Veggie Capsule
Amount Per Serving
%DV
Vitamin C (as Q®-C ascorbic acid)
1000 mg
1111%
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
9
Avoided catching colds
30 people found this helpful
Our best defence against the cold season. The quality of these vitamins has been verified for me. My children brought home bad colds from school, yet my husband and I avoided catching it despite being their designated nose wipers. My mother caught a cold despite the precautions. I now swear by these vitamins and the additional variety of Dr. Best vitamins I take daily.
Read More
9
Effective winter remedy
8 people found this helpful
I highly regard the etutorgovuyu brand. This vitamin is excellent for combating winter colds and flu. Be sure to take it to stay healthy.
Read More
9
Energy and immunity boost
3 people found this helpful
Great value in a big jar! This vitamin C has an impressive dosage of 1000 mg. We take it daily during the colder months, and it bolsters our immunity—we're not fearful of any colds. I even mix the contents with porridge for my young child, and it goes down well!
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 171 Reviews
8.1
- All Reviews
- Positive Reviews
- Negative Reviews
9
Avoided catching colds
30 people found this helpful
Our best defence against the cold season. The quality of these vitamins has been verified for me. My children brought home bad colds from school, yet my husband and I avoided catching it despite being their designated nose wipers. My mother caught a cold despite the precautions. I now swear by these vitamins and the additional variety of Dr. Best vitamins I take daily.
Read More
9
Effective winter remedy
8 people found this helpful
I highly regard the etutorgovuyu brand. This vitamin is excellent for combating winter colds and flu. Be sure to take it to stay healthy.
Read More
9
Energy and immunity boost
3 people found this helpful
Great value in a big jar! This vitamin C has an impressive dosage of 1000 mg. We take it daily during the colder months, and it bolsters our immunity—we're not fearful of any colds. I even mix the contents with porridge for my young child, and it goes down well!
Read More
9
Preventative cold measure
2 people found this helpful
An excellent quality product. This effective vitamin C has been tested repeatedly by my family. During cold season, I give everyone a preventive dose of 1000mg per day, preferably split into two doses to avoid gastric sensitivity. During illness, I administer 500mg every hour until there's a change. I then adjust the dosage for the first few days of illness, spreading it across several doses.
Read More
9
Improved health
2 people found this helpful
This is a noteworthy supplement from Doctor's Best. Firstly, it is high-quality vitamin C from Scotland called Quori C, so you can be assured of its quality. I take 2 to 3 tablets a day, but as one tablet is 1000mg, I only need one tablet in the morning, afternoon, and evening. I haven't caught a cold in over 3 years since I started using this. Furthermore, I no longer worry about my skin's pores. I believe vitamin C is essential for health and beauty.
Read More
Frequently Asked Questions
9
Disappeared cold
Since I began taking vitamin C, my gums stopped bleeding, stomachaches resolved, and heartburn disappeared. I take 2 or 3 pills daily, and at the first sign of a cold, I take 5 before bed. My symptoms vanish by morning, leaving me in good condition. It's an indispensable vitamin for me.
10
Cold prevention
After three months of consumption, I've yet to catch a cold.
9
Improved immunity
1 people found this helpful
Excellent dietary supplement! Vitamin C is a reliable brand of the highest quality. I bought it for my mother, who often fell ill. Colds became difficult to bear, and her health declined. The doctor recommended vitamin C to combat the virus quickly and avoid complications. After a month of taking two capsules daily as prescribed, my mother’s immunity and overall health improved remarkably. The pesky colds disappeared, and she felt less fatigued. The effectiveness of the supplement is quick, and we are very satisfied with the results.
9
Improved health
2 people found this helpful
This is a noteworthy supplement from Doctor's Best. Firstly, it is high-quality vitamin C from Scotland called Quori C, so you can be assured of its quality. I take 2 to 3 tablets a day, but as one tablet is 1000mg, I only need one tablet in the morning, afternoon, and evening. I haven't caught a cold in over 3 years since I started using this. Furthermore, I no longer worry about my skin's pores. I believe vitamin C is essential for health and beauty.
9
Strengthens immune system
Doctor's Best Vitamin C with QC is excellent immune support. I always take vitamin C to guard against colds and to strengthen my body; the addition of quercetin enhances its effectiveness by improving absorption. This product has bolstered my immune system during the cold season and boosted my energy levels. The capsules are easy to swallow, and I feel much better and fall ill less often.
9
Strong immune support
This is excellent. I take it every day in the morning. It’s great for general health. If my children have a cold, recovery takes only three days without using cold medicines, greatly boosting the immune system.
9
Energy and immunity boost
3 people found this helpful
Great value in a big jar! This vitamin C has an impressive dosage of 1000 mg. We take it daily during the colder months, and it bolsters our immunity—we're not fearful of any colds. I even mix the contents with porridge for my young child, and it goes down well!
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. doi: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. doi:10.3390/ijms251810093
