Vitamin C

Does vitamin c work?

Vitamin C Claims

The supplement database currently has 17 claims for Vitamin C. The claims include: reduce muscle damage, decrease body fat, lower LDL (bad) cholesterol levels, increase HDL (good) cholesterol levels, improve immune function, reduce frequency of the common cold, reduce duration of the common cold, reduce severity of the common cold, decrease fatigue, improve cycling performance, improve mood, reduce muscle soreness, improve recovery, improve cardiovascular endurance, improve insulin sensitivity, increase muscle mass, increase strength.

Overall Effectiveness Rating for Vitamin C

The overall effectiveness rating for vitamin c is 1.3 out of 3. This rating means there is little to no evidence vitamin c does what it claims. Using this supplement will not lead to positive results.

Overall Confidence Rating for Vitamin C

There are 37 studies in the database on vitamin c; the confidence rating is 44. A score above 80 means the effectiveness rating for this supplement is reliable. A score under 80 means there is insufficient evidence to ensure a reliable effectiveness rating. Note, this rating is for vitamin c as a whole. There are also individual ratings for the claims below.

Products Containing Vitamin C

There are 37 products in the database containing Vitamin C. Follow the link to see the full list.

Individual Claims

The overall ratings above do no necessarily reflect each claim about vitamin c. Individual claims can have higher or lower ratings. For example, some supplements may have a lot of backing for one claim, but be completely useless for another. Click on claims below for more information.

The effectiveness rating for vitamin c's ability to decrease body fat is 2 out of 3. The confidence rating for this claim is 40. This means there is not enough evidence in the database on this claim and the effectiveness rating above is not valid. Read more about vitamin c's ability to decrease body fat.

Effectiveness Rating for this claim: 2 out of 3

Confidence Rating for this claim: 40

The effectiveness rating for vitamin c's ability to decrease fatigue is 1 out of 3. The confidence rating for this claim is 20. This means there is not enough evidence in the database on this claim and the effectiveness rating above is not valid. Read more about vitamin c's ability to decrease fatigue.

Effectiveness Rating for this claim: 1 out of 3

Confidence Rating for this claim: 20

The effectiveness rating for vitamin c's ability to improve cardiovascular endurance is 1 out of 3. The confidence rating for this claim is 60. This means there is not enough evidence in the database on this claim and the effectiveness rating above is not valid. Read more about vitamin c's ability to improve cardiovascular endurance.

Effectiveness Rating for this claim: 1 out of 3

Confidence Rating for this claim: 60

The effectiveness rating for vitamin c's ability to improve cycling performance is 1 out of 3. The confidence rating for this claim is 20. This means there is not enough evidence in the database on this claim and the effectiveness rating above is not valid. Read more about vitamin c's ability to improve cycling performance.

Effectiveness Rating for this claim: 1 out of 3

Confidence Rating for this claim: 20

The effectiveness rating for vitamin c's ability to improve immune function is 1 out of 3. The confidence rating for this claim is 40. This means there is not enough evidence in the database on this claim and the effectiveness rating above is not valid. Read more about vitamin c's ability to improve immune function.

Effectiveness Rating for this claim: 1 out of 3

Confidence Rating for this claim: 40

The effectiveness rating for vitamin c's ability to improve insulin sensitivity is 1 out of 3. The confidence rating for this claim is 20. This means there is not enough evidence in the database on this claim and the effectiveness rating above is not valid. Read more about vitamin c's ability to improve insulin sensitivity.

Effectiveness Rating for this claim: 1 out of 3

Confidence Rating for this claim: 20

The effectiveness rating for vitamin c's ability to improve mood is 1 out of 3. The confidence rating for this claim is 20. This means there is not enough evidence in the database on this claim and the effectiveness rating above is not valid. Read more about vitamin c's ability to improve mood.

Effectiveness Rating for this claim: 1 out of 3

Confidence Rating for this claim: 20

The effectiveness rating for vitamin c's ability to improve recovery is 1.3 out of 3. The confidence rating for this claim is 60. This means there is not enough evidence in the database on this claim and the effectiveness rating above is not valid. Read more about vitamin c's ability to improve recovery.

Effectiveness Rating for this claim: 1.3 out of 3

Confidence Rating for this claim: 60

The effectiveness rating for vitamin c's ability to increase HDL (good) cholesterol levels is 1 out of 3. The confidence rating for this claim is 20. This means there is not enough evidence in the database on this claim and the effectiveness rating above is not valid. Read more about vitamin c's ability to increase HDL (good) cholesterol levels.

Effectiveness Rating for this claim: 1 out of 3

Confidence Rating for this claim: 20

The effectiveness rating for vitamin c's ability to increase muscle mass is 1 out of 3. The confidence rating for this claim is 20. This means there is not enough evidence in the database on this claim and the effectiveness rating above is not valid. Read more about vitamin c's ability to increase muscle mass.

Effectiveness Rating for this claim: 1 out of 3

Confidence Rating for this claim: 20

The effectiveness rating for vitamin c's ability to increase strength is 1 out of 3. The confidence rating for this claim is 20. This means there is not enough evidence in the database on this claim and the effectiveness rating above is not valid. Read more about vitamin c's ability to increase strength.

Effectiveness Rating for this claim: 1 out of 3

Confidence Rating for this claim: 20

The effectiveness rating for vitamin c's ability to lower LDL (bad) cholesterol levels is 2 out of 3. The confidence rating for this claim is 20. This means there is not enough evidence in the database on this claim and the effectiveness rating above is not valid. Read more about vitamin c's ability to lower LDL (bad) cholesterol levels.

Effectiveness Rating for this claim: 2 out of 3

Confidence Rating for this claim: 20

The effectiveness rating for vitamin c's ability to reduce duration of the common cold is 1 out of 3. The confidence rating for this claim is 20. This means there is not enough evidence in the database on this claim and the effectiveness rating above is not valid. Read more about vitamin c's ability to reduce duration of the common cold.

Effectiveness Rating for this claim: 1 out of 3

Confidence Rating for this claim: 20

The effectiveness rating for vitamin c's ability to reduce frequency of the common cold is 3 out of 3. The confidence rating for this claim is 20. This means there is not enough evidence in the database on this claim and the effectiveness rating above is not valid. Read more about vitamin c's ability to reduce frequency of the common cold.

Effectiveness Rating for this claim: 3 out of 3

Confidence Rating for this claim: 20

The effectiveness rating for vitamin c's ability to reduce muscle damage is 1.4 out of 3. The confidence rating for this claim is 240. This means there is not enough evidence in the database on this claim and the effectiveness rating above is not valid. Read more about vitamin c's ability to reduce muscle damage.

Effectiveness Rating for this claim: 1.4 out of 3

Confidence Rating for this claim: 240

The effectiveness rating for vitamin c's ability to reduce muscle soreness is 1.3 out of 3. The confidence rating for this claim is 80. This means there is not enough evidence in the database on this claim and the effectiveness rating above is not valid. Read more about vitamin c's ability to reduce muscle soreness.

Effectiveness Rating for this claim: 1.3 out of 3

Confidence Rating for this claim: 80

The effectiveness rating for vitamin c's ability to reduce severity of the common cold is 1 out of 3. The confidence rating for this claim is 20. This means there is not enough evidence in the database on this claim and the effectiveness rating above is not valid. Read more about vitamin c's ability to reduce severity of the common cold.

Effectiveness Rating for this claim: 1 out of 3

Confidence Rating for this claim: 20