Overview

SCIENTIFIC SCORE
Moderately Effective
Based on 2 Researches
8
USERS' SCORE
Good
Based on 5 Reviews
8.3

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

9
Reliable relief
1 people found this helpful
This stuff is GOLD. My daughter, who generally avoids medicine, takes this without issue; it's effective for shortening colds and boosting immunity. Some products come only half-filled, yet every bottle of this brand has lasted for months, providing excellent value. I will continue purchasing this for her!
Read More
9
Kids stay healthy
1 people found this helpful
Fantastic for the kids! This product is the best; it keeps their immune systems robust and helps them fend off whatever is circulating. Since we started using it, they rarely catch a cold, and when they do, it’s always short-lived, even when others are ill.
Read More
9
Resolved congestion
1 people found this helpful
Brilliant product, purchased in Turkey. It worked wonders for my congested child, who is 3 years old. She easily succumbs to colds and coughs, but this product truly improved her immune system. She was not ill for a single day in Turkey, and I’ve used this in various countries; it efficiently bolstered her immune system against colds and congestion!
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 5 Reviews
8.3
  • All Reviews
  • Positive Reviews
  • Negative Reviews
9
Reliable relief
1 people found this helpful
This stuff is GOLD. My daughter, who generally avoids medicine, takes this without issue; it's effective for shortening colds and boosting immunity. Some products come only half-filled, yet every bottle of this brand has lasted for months, providing excellent value. I will continue purchasing this for her!
Read More
9
Kids stay healthy
1 people found this helpful
Fantastic for the kids! This product is the best; it keeps their immune systems robust and helps them fend off whatever is circulating. Since we started using it, they rarely catch a cold, and when they do, it’s always short-lived, even when others are ill.
Read More
9
Resolved congestion
1 people found this helpful
Brilliant product, purchased in Turkey. It worked wonders for my congested child, who is 3 years old. She easily succumbs to colds and coughs, but this product truly improved her immune system. She was not ill for a single day in Turkey, and I’ve used this in various countries; it efficiently bolstered her immune system against colds and congestion!
Read More
7.5
Effective defence
18 people found this helpful
A great help during the Midwest cold/flu season! In our household, we are huge fans. I have young children who are starting school, and I plan to have this handy all winter. I find they can recover from colds more quickly and avoid catching illnesses much better with Elderberry syrup. Though it's a bit expensive, my children love it, treating it as a sweet treat, and it seems to work effectively.
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7.5
Surprising effectiveness
5 people found this helpful
Seems to work for us! I experimented with various sambucol/elderberry products during COVID-19. One week, my wife and I came down with unusual symptoms. I forgot the adult Sambucol but later used it on my daughter with a high fever. It worked wonders, and she didn't experience the additional symptoms we did. I plan to use sambucol in the future if anyone shows signs of illness. The downside is the cost and remembering the dosing schedule, but it's worth it.
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Frequently Asked Questions

No FAQs are available for this product and symptom.

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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