Overview

SCIENTIFIC SCORE
Moderately Effective
Based on 2 Researches
8
USERS' SCORE
Good
Based on 60 Reviews
8
Supplement Facts
Serving Size:  1 Packet (9.4 g)
Amount Per Serving
%DV
Calories
35
 
Total Carbohydrate
8 g
3%†
Total Sugars
7 g
*
Includes 6 g Added Sugars
12%†
Vitamin C (as ascorbic acid, zinc ascorbate)
1,000 mg
1,111%
Thiamine (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.
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

8
H1N1 relief
101 people found this helpful
I used this to help me recover from H1N1 flu. Despite my precautions, I fell ill and was prescribed Tamiflu, which made me feel worse. After weeks of battling symptoms, a friend gave me Emergen-C, and I felt an immediate improvement. Within a few days of daily packets, my symptoms, fatigue, and sinus infection subsided. Other family members also found relief. This product gives your body the tools it needs to recover.
Read More
7.5
User-friendly boost
3 people found this helpful
This is so easy to use and tastes great! It’s the boost needed during cold and flu season, and I highly recommend it. Whether using as a preventive measure while travelling or to shorten a cold, I suggest buying enough for 2 to 3 weeks.
Read More
9
Rapid cold relief
2 people found this helpful
Really, at the first signs of a cold, it swiftly gets you back on your feet. I find that I am drinking it, and by morning, there are no indications that I am unwell.
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 60 Reviews
8
  • All Reviews
  • Positive Reviews
  • Negative Reviews
8
H1N1 relief
101 people found this helpful
I used this to help me recover from H1N1 flu. Despite my precautions, I fell ill and was prescribed Tamiflu, which made me feel worse. After weeks of battling symptoms, a friend gave me Emergen-C, and I felt an immediate improvement. Within a few days of daily packets, my symptoms, fatigue, and sinus infection subsided. Other family members also found relief. This product gives your body the tools it needs to recover.
Read More
7.5
User-friendly boost
3 people found this helpful
This is so easy to use and tastes great! It’s the boost needed during cold and flu season, and I highly recommend it. Whether using as a preventive measure while travelling or to shorten a cold, I suggest buying enough for 2 to 3 weeks.
Read More
9
Rapid cold relief
2 people found this helpful
Really, at the first signs of a cold, it swiftly gets you back on your feet. I find that I am drinking it, and by morning, there are no indications that I am unwell.
Read More
9
Effective against colds
2 people found this helpful
A must-have! My friend gave me some when I felt a cold coming on, and I was amazed by its effectiveness. It helped fight the cold before it could take over, and it's loaded with B vitamins to prevent lethargy!
Read More
9
Helps when feeling cold
1 people found this helpful
Great. Easy to pour into a water bottle, shake, and drink. I always use Emergen-C when I first feel a cold coming. It helps so much!!
Read More

Frequently Asked Questions

9
Rapid cold relief
2 people found this helpful
Really, at the first signs of a cold, it swiftly gets you back on your feet. I find that I am drinking it, and by morning, there are no indications that I am unwell.
9
Quick relief from cold
This product is excellent quality, and I buy it repeatedly. At the onset of a cold, I take a sachet, and by the next day, I feel much better. The taste is very pleasant.
9
Effective for cold
Vitamin C infused tablets are very effective for colds. Their natural ingredients are of high quality and effectively boost our immunity. The taste is a pleasant blend of sour and sweet, and the packaging is exquisite.
9
Tasty and effective
If you drink it as soon as you feel you have a cold, it works immediately. It tastes delightful and is effective, so I always have it readily available.
7.5
Energy boost from colds
1 people found this helpful
I originally bought this for my dad, but I tried it when I felt a cold coming on. It provides a decent energy boost and helps alleviate cold symptoms. It’s also helpful when feeling tired. The taste reminds me of childhood drinks, and the price is reasonable! I would definitely recommend it 😊
10
Preventive measure
Will keep repurchasing! The name is literally for emergencies when I sense an oncoming cold. It helps prevent the cold from worsening. I've experienced this multiple times, and Emergen-C has saved us from getting sick.
9
Effective relief
It helps immensely in autumn and winter when the immune system weakens. I usually drink it at the first signs of a cold; it clears everything as if by hand.
7.5
Immune boost
Lifesaver! I’ve relied on Emergen-C Vitamin C (Tangerine) for years; it’s my go-to when I feel run-down or am catching a cold. The 1,000 mg of Vitamin C, along with B vitamins and electrolytes, provides a quick boost, and the tangerine flavour is refreshing. I don’t use it daily, but it's crucial when I need it—highly recommend for immune support!
8
Accelerates cold recovery
I have always liked the Emergen-C foaming Vitamin C. Due to its high dosage, I do not consume it daily, but it’s very effective when you're about to catch a cold or during one, as it accelerates recovery. The orange taste is pleasantly balanced, resembling sparkling orange water. The single package is easy to carry and remains dry.
9
Immunity stronghold
If you are on the verge of catching a cold, taking it hot proves effective. It boosts immunity, is highly effective, and the packaging is convenient for transport. I’ve been using it for nearly 10 years, confident in its quality and ingredients. It has a slight acidity but is sweet enough to be pleasant. Pouring water results in bubbling, so do it slowly—start with a small amount, then add more gradually.
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.

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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