Overview
SCIENTIFIC SCORE
Moderately Effective
Based on 2 Researches
8
USERS' SCORE
Good
Based on 126 Reviews
8
Supplement Facts
Serving Size: 1 Veggie Capsule
Amount Per Serving
%DV
Vitamin C (as Q®-C ascorbic acid)
500 mg
556%
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
Effective against cold
63 people found this helpful
I started taking vitamin C regularly after dealing with herpes outbreaks for three years. Despite taking various medications, they only provided temporary relief. However, upon my pharmacist's advice, I tried vitamin C with zinc, and it worked wonders! For three years, I have had no herpes outbreaks. Not only that, but it's become an essential remedy at the first sign of a cold for my whole family. We follow a specific dose, and remarkably, my children have never missed school in 2 years, only experiencing minor colds or sore throats. My husband, who previously relied on antibiotics for tonsillitis, has also stopped needing them. I additionally take vitamin C to boost my vascular health, and it has significantly improved my bruising.
Read More
9
Quick results
3 people found this helpful
I took up to 4 capsules a day at the onset of a cold, and within two days, all symptoms had vanished. I will continue to take it according to the recommended dosage on the bottle.
Read More
9
No more sickness
3 people found this helpful
This vitamin C is of the highest quality. I used to suffer from colds and sinus infections at least twice a year, but since incorporating this into my routine for the past 10 months, I haven't been sick once, even during cold outbreaks in my office. It has become an essential part of my regimen.
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 126 Reviews
8
- All Reviews
- Positive Reviews
- Negative Reviews
9
Effective against cold
63 people found this helpful
I started taking vitamin C regularly after dealing with herpes outbreaks for three years. Despite taking various medications, they only provided temporary relief. However, upon my pharmacist's advice, I tried vitamin C with zinc, and it worked wonders! For three years, I have had no herpes outbreaks. Not only that, but it's become an essential remedy at the first sign of a cold for my whole family. We follow a specific dose, and remarkably, my children have never missed school in 2 years, only experiencing minor colds or sore throats. My husband, who previously relied on antibiotics for tonsillitis, has also stopped needing them. I additionally take vitamin C to boost my vascular health, and it has significantly improved my bruising.
Read More
9
Quick results
3 people found this helpful
I took up to 4 capsules a day at the onset of a cold, and within two days, all symptoms had vanished. I will continue to take it according to the recommended dosage on the bottle.
Read More
9
No more sickness
3 people found this helpful
This vitamin C is of the highest quality. I used to suffer from colds and sinus infections at least twice a year, but since incorporating this into my routine for the past 10 months, I haven't been sick once, even during cold outbreaks in my office. It has become an essential part of my regimen.
Read More
10
Effective cold remedy
1 people found this helpful
Not a replaceable item for colds! While the dosage isn't perfect, taking 1-2 capsules daily will boost your health by 100%. It’s now the top tool in my first aid kit! Should you encounter a cold, consume 4 capsules at the first sign of illness (not exceeding a dosage of 2000mg). By morning, you’ll feel like “a cucumber,” showing no signs of a cold—I've verified it multiple times. However, there are restrictions for children, pregnant or lactating women, and individuals with stomach issues. Ensure this dosage is suitable for you before consumption. Wishing you good health!
Read More
10
Effective for kids
1 people found this helpful
We take it ourselves and give it to our daughter (6 years) both for prevention and at the first signs of a cold. It effectively clears the illness within the first two days of taking it. No allergies arise from this product.
Read More
Frequently Asked Questions
9
Quick results
3 people found this helpful
I took up to 4 capsules a day at the onset of a cold, and within two days, all symptoms had vanished. I will continue to take it according to the recommended dosage on the bottle.
10
Effective for kids
1 people found this helpful
We take it ourselves and give it to our daughter (6 years) both for prevention and at the first signs of a cold. It effectively clears the illness within the first two days of taking it. No allergies arise from this product.
9
Strong immunity support
They consumed 500 mg daily, and when they felt unwell or very cold, I increased it to 1000 mg per day. It effectively supports immunity. I opted for regular vitamin C instead of QC vitamin C due to unclear differences, even though the dosages are the same with a significant price difference.
9
Quick recovery
Always in the house for the cold season and for preventive measures. It helps with quick recovery. Illnesses pass quickly (on my feet in only 2-3 days). This has been the case for several years.
9
Effective against cold
63 people found this helpful
I started taking vitamin C regularly after dealing with herpes outbreaks for three years. Despite taking various medications, they only provided temporary relief. However, upon my pharmacist's advice, I tried vitamin C with zinc, and it worked wonders! For three years, I have had no herpes outbreaks. Not only that, but it's become an essential remedy at the first sign of a cold for my whole family. We follow a specific dose, and remarkably, my children have never missed school in 2 years, only experiencing minor colds or sore throats. My husband, who previously relied on antibiotics for tonsillitis, has also stopped needing them. I additionally take vitamin C to boost my vascular health, and it has significantly improved my bruising.
10
No colds
These vitamins are simply outstanding! We went through winter without a single cold, even during the pandemic.
10
Effective cold remedy
1 people found this helpful
Not a replaceable item for colds! While the dosage isn't perfect, taking 1-2 capsules daily will boost your health by 100%. It’s now the top tool in my first aid kit! Should you encounter a cold, consume 4 capsules at the first sign of illness (not exceeding a dosage of 2000mg). By morning, you’ll feel like “a cucumber,” showing no signs of a cold—I've verified it multiple times. However, there are restrictions for children, pregnant or lactating women, and individuals with stomach issues. Ensure this dosage is suitable for you before consumption. Wishing you good health!
9
Effective dosage
I have been taking it for a long time, and it gets me back on my feet in 2 days. It's a reliable brand with no side effects. Convenient dosage for prophylaxis. In case of ARVI, I increase the dose, add GSE, and within a couple of days everything improves. Fast delivery. Thank you.
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
