Zinc, Vitamin A, Vitamin E, Selenium and Vitamin C: study protocols
7 study groups took Zinc together with Vitamin A, Vitamin E, Selenium and Vitamin C. These are the doses the studies gave. They are not a recommendation.
Dose per serving from research: Zinc
7 study groups in 6 studies say how much Zinc participants took a day.
These are the doses the studies gave. They are not a recommendation.
Most common: 5 mg to 10 mg, 43% of 7 study groups.
| Daily dose | Study groups |
|---|---|
| 5 mg to 10 mg | 3 |
| 10 mg to 25 mg | 2 |
| 25 mg to 50 mg | 2 |
Dose per serving from research: Vitamin A
6 study groups in 5 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 and 1 mg to 2.5 mg, 33% of 6 study groups each.
| Daily dose | Study groups |
|---|---|
| 100 mcg to 250 mcg | 1 |
| 250 mcg to 500 mcg | 1 |
| 500 mcg to 1 mg | 2 |
| 1 mg to 2.5 mg | 2 |
Dose per serving from research: Vitamin E
6 study groups in 5 studies say how much Vitamin E participants took a day.
These are the doses the studies gave. They are not a recommendation.
Most common: 10 mg to 25 mg, 67% of 6 study groups.
| Daily dose | Study groups |
|---|---|
| 5 mg or less | 1 |
| 5 mg to 10 mg | 1 |
| 10 mg to 25 mg | 4 |
Dose per serving from research: Selenium
7 study groups in 6 studies say how much Selenium participants took a day.
These are the doses the studies gave. They are not a recommendation.
Most common: 10 mcg to 25 mcg and 50 mcg to 100 mcg and 100 mcg to 250 mcg, 29% of 7 study groups each.
| Daily dose | Study groups |
|---|---|
| 5 mcg or less | 1 |
| 5 mcg to 10 mcg | 0 |
| 10 mcg to 25 mcg | 2 |
| 25 mcg to 50 mcg | 0 |
| 50 mcg to 100 mcg | 2 |
| 100 mcg to 250 mcg | 2 |
Dose per serving from research: Vitamin C
6 study groups in 5 studies say how much Vitamin C participants took a day.
These are the doses the studies gave. They are not a recommendation.
Most common: 25 mg to 50 mg and 50 mg to 100 mg and 100 mg to 250 mg, 33% of 6 study groups each.
| Daily dose | Study groups |
|---|---|
| 25 mg to 50 mg | 2 |
| 50 mg to 100 mg | 2 |
| 100 mg to 250 mg | 2 |
Commonly used together
7 of 7 study groups took Zinc, Vitamin A, Vitamin E, Selenium and Vitamin C with something else. Shown: what 3 or more different studies gave.
What was given together, not what works together.
| Taken with | Study groups |
|---|---|
| Copper | 7 |
| Iron | 7 |
| Iodine | 6 |
| Folic Acid | 5 |
| Vitamin D | 5 |
| Vitamin B12 | 4 |
| Vitamin B6 | 3 |
7 study groups