Research Authors

Overview

SCIENTIFIC SCORE
Moderately Effective
Based on 2 Researches
8
USERS' SCORE
Good
Based on 229 Reviews
8.2
Supplement Facts
Serving Size:  2 capsules
Amount Per Serving
%DV
Vitamin C (from culture of Saccharomyces cerevisiae)
500 mg
556%
Raw Organic Fruit & Vegetable Blend 
720 mg 
Raw Probiotic & Enzyme Blend
60 mg
+

Top Medical Research Studies

7
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

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

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
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.
Read More
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.
Read More

Frequently Asked Questions

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.
7
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. 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. 10.3390/ijms251810093
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