Overview
SCIENTIFIC SCORE
Moderately Effective
Based on 2 Researches
8
USERS' SCORE
Good
Based on 67 Reviews
8.2
Supplement Facts
Serving Size: 1 Packet (9.1 g)
Amount Per Serving
%DV
Calories
35
Total Carbohydrate
8 g
3%†
Total Sugars
6 g
*
Includes 5 g Added Sugars
10%†
Vitamin C (as ascorbic acid, zinc ascorbate)
1,000 mg
1,111%
Thiamin (as thiamine hydrochloride) (Vit. B1)
0.36 mg
30%
Riboflavin (as riboflavin 5'-phosphate) (Vit. B2)
0.39 mg
30%
Niacin (Vit. B3)
4 mg
25%
Vitamin B6 (as pyridoxine hydrochloride)
10 mg
588%
Folate (Vit. B9)
167 mcg DFE(100 mcg Folic Acid)
42%
Vitamin B12 (as cyanocobalamin)
25 mcg
1,042%
Pantothenic Acid (as calcium pantothenate) (Vit. B5)
2.5 mg
50%
Calcium (as calcium carbonate, monobasic calcium phosphate, tribasic calcium phosphate, calcium pantothenate)‡
50 mg
4%
Phosphorus (as monobasic potassium phosphate, monobasic calcium phosphate, monobasic sodium phosphate, tribasic calcium phosphate)‡
38 mg
3%
Magnesium (as magnesium hydroxide, magnesium carbonate)‡
53 mg
13%
Zinc (as zinc ascorbate)
2 mg
18%
Manganese (as manganese gluconate)
0.5 mg
22%
Chromium (as chromium picolinate)
10 mcg
29%
Sodium (as sodium bicarbonate, monobasic sodium phosphate)‡
65 mg
3%
Potassium (as potassium bicarbonate, potassium carbonate, monobasic potassium phosphate)‡
200 mg
4%
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
Flu relief
101 people found this helpful
I used this successfully to recover from H1N1 flu. Despite precautions, I fell ill after my husband, a police officer, caught it. While struggling with severe fatigue and a lingering cough, a friend introduced me to Emergen-C. I felt considerably better within an hour. My fatigue and other symptoms significantly diminished after consistently using it daily. Even my father, who was initially sceptical, found relief. I believe it boosts your immune system effectively against cold and flu viruses.
Read More
9
Easy to use
3 people found this helpful
This is incredibly easy to use and tastes great! It’s the boost you need during cold and flu season. I highly recommend it, whether you need it preventatively while travelling or to shorten a cold's duration.
Read More
9
Cold prevention
2 people found this helpful
A must-have! My friend provided some when I was catching a cold, and I was astounded by its effectiveness; it prevented the cold from taking hold.
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 67 Reviews
8.2
- All Reviews
- Positive Reviews
- Negative Reviews
9
Flu relief
101 people found this helpful
I used this successfully to recover from H1N1 flu. Despite precautions, I fell ill after my husband, a police officer, caught it. While struggling with severe fatigue and a lingering cough, a friend introduced me to Emergen-C. I felt considerably better within an hour. My fatigue and other symptoms significantly diminished after consistently using it daily. Even my father, who was initially sceptical, found relief. I believe it boosts your immune system effectively against cold and flu viruses.
Read More
9
Easy to use
3 people found this helpful
This is incredibly easy to use and tastes great! It’s the boost you need during cold and flu season. I highly recommend it, whether you need it preventatively while travelling or to shorten a cold's duration.
Read More
9
Cold prevention
2 people found this helpful
A must-have! My friend provided some when I was catching a cold, and I was astounded by its effectiveness; it prevented the cold from taking hold.
Read More
9
Great cold remedy
1 people found this helpful
Excellent! This vitamin is my go-to at the first hint of a cold. I’ve tried several options—orange, tangerine—but the raspberry flavour is by far the most enjoyable.
Read More
9
Immune support
1 people found this helpful
This truly supports your immune system! I recommend it to everyone, especially during colder months when surrounded by coughing people. It works wonders!
Read More
Frequently Asked Questions
9
Quick symptom relief
This is a super supplement! I take a sachet whenever I feel unwell. It contains a large dose of vitamin C (people with stomach or kidney issues should be cautious). For me, it works impeccably; my cold symptoms dissipate rapidly. Occasionally, I consume it for a few days. I recommend this to everyone—it's a must-have in my medicine cabinet!
9
Instant cold relief
I truly love this vitamin. It instantly alleviates the condition and eliminates the symptoms of a cold.
9
Prevents colds
I’ve been using this product for five years and used to catch many colds. Now, I only get one a year. It really works; if you feel a cold coming on, take two packages for prevention.
10
Excellent cold remedy
This product is brilliant! I've been buying it for three years now. It's an excellent remedy for early colds! As soon as I sense body aches, I drink two or three packets throughout the day for a couple of days. It alleviates a cold remarkably. All my friends have started using it! I also give it to my child but at half the dosage. I recommend it to everyone!
9
Best for cold
Emergen C is remarkable if you feel a cold coming. I have recommended it to numerous friends, and they all adore it.
9
Supports children's immunity
I have been giving Emergen-C Vitamin C Daily Immune Support to my kids, and it's a fantastic addition to our routine! The mild raspberry flavour is very popular with them; they enjoy it in water without complaints. It dissolves quickly and seems to absorb well, which is great for quick benefits. Since we started using it, they appear to have more energy and stay healthier during cold season, with shorter recovery times when they do get ill. The powder contains natural, non-GMO ingredients without artificial flavours, which I appreciate. The container is user-friendly as well. Highly recommend it for parents seeking an easy, effective way to support their children’s health!
9
Relieves cold symptoms
I discovered this product when my uncle gave me a box while suffering from cold. I drink it religiously every day, and my cold is relieved immediately. I take Emergen-C daily, even twice a day if I'm catching a cold or feeling fatigued. It’s disappointing that it’s often out of stock. The quality is superb, improving my immunity, and the taste is delightful. It doesn’t upset my stomach, though I prefer to have it after breakfast or a meal. I hope for more stock soon.
7.5
Rapid cold relief
1 people found this helpful
This product is remarkable! My wife and I caught a cold in Augusta, Georgia, and our hosts offered us some; we felt results almost overnight! I’ve tried Ener-C when Emergen-C wasn’t available, but it didn’t seem as effective. However, Emergen-C shows a significant improvement in comparison. I think the packaging could be more eco-friendly.
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
