Vitamin E, Vitamin C and Vitamin A: study protocols
7 study groups took Vitamin E together with Vitamin C and Vitamin A. These are the doses the studies gave. They are not a recommendation.
Dose per serving from research: Vitamin E
7 study groups in 7 studies say how much Vitamin E participants took a day.
These are the doses the studies gave. They are not a recommendation.
Most common: 5 mg to 10 mg and 10 mg to 25 mg, 29% of 7 study groups each.
| Daily dose | Study groups |
|---|---|
| 5 mg or less | 1 |
| 5 mg to 10 mg | 2 |
| 10 mg to 25 mg | 2 |
| 25 mg to 50 mg | 1 |
| 50 mg to 100 mg | 1 |
Dose per serving from research: Vitamin C
7 study groups in 7 studies say how much Vitamin C participants took a day.
These are the doses the studies gave. They are not a recommendation.
Most common: 50 mg to 100 mg, 43% of 7 study groups.
| Daily dose | Study groups |
|---|---|
| 25 mg to 50 mg | 2 |
| 50 mg to 100 mg | 3 |
| 100 mg to 250 mg | 0 |
| 250 mg to 500 mg | 1 |
| 500 mg to 1 g | 1 |
Dose per serving from research: Vitamin A
6 study groups in 6 studies say how much Vitamin A participants took a day.
These are the doses the studies gave. They are not a recommendation.
Most common: 500 mcg to 1 mg, 50% of 6 study groups.
| Daily dose | Study groups |
|---|---|
| 100 mcg to 250 mcg | 1 |
| 250 mcg to 500 mcg | 1 |
| 500 mcg to 1 mg | 3 |
| 1 mg to 2.5 mg | 0 |
| 2.5 mg to 5 mg | 0 |
| 5 mg to 10 mg | 0 |
| 10 mg to 25 mg | 0 |
| over 25 mg | 1 |
Commonly used together
6 of 7 study groups took Vitamin E, Vitamin C and Vitamin A with something else. Shown: what 3 or more different studies gave.
What was given together, not what works together.
| Taken with | Study groups |
|---|---|
| Copper | 5 |
| Iron | 5 |
| Zinc | 5 |
| Folic Acid | 4 |
| Selenium | 4 |
| Vitamin B12 | 4 |
| Iodine | 3 |
| Vitamin B6 | 3 |
| Vitamin D | 3 |
7 study groups