Zinc, Vitamin C, Selenium and Vitamin E: study protocols
14 study groups took Zinc together with Vitamin C, Selenium and Vitamin E. These are the doses the studies gave. They are not a recommendation.
Dose per serving from research: Zinc
14 study groups in 13 studies say how much Zinc participants took a day.
These are the doses the studies gave. They are not a recommendation.
Most common: 10 mg to 25 mg, 64% of 14 study groups.
| Daily dose | Study groups |
|---|---|
| 5 mg to 10 mg | 3 |
| 10 mg to 25 mg | 9 |
| 25 mg to 50 mg | 2 |
Dose per serving from research: Vitamin C
13 study groups in 12 studies say how much Vitamin C participants took a day.
These are the doses the studies gave. They are not a recommendation.
Most common: 100 mg to 250 mg, 69% of 13 study groups.
| Daily dose | Study groups |
|---|---|
| 25 mg to 50 mg | 2 |
| 50 mg to 100 mg | 2 |
| 100 mg to 250 mg | 9 |
Dose per serving from research: Selenium
12 study groups in 11 studies say how much Selenium participants took a day.
These are the doses the studies gave. They are not a recommendation.
Most common: 50 mcg to 100 mcg, 58% of 12 study groups.
| Daily dose | Study groups |
|---|---|
| 10 mcg or less | 1 |
| 10 mcg to 25 mcg | 2 |
| 25 mcg to 50 mcg | 0 |
| 50 mcg to 100 mcg | 7 |
| 100 mcg to 250 mcg | 2 |
Dose per serving from research: Vitamin E
13 study groups in 12 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, 46% of 13 study groups.
| Daily dose | Study groups |
|---|---|
| 5 mg or less | 1 |
| 5 mg to 10 mg | 1 |
| 10 mg to 25 mg | 6 |
| 25 mg to 50 mg | 5 |
Commonly used together
14 of 14 study groups took Zinc, Vitamin C, Selenium and Vitamin E with something else. Shown: what 3 or more different studies gave.
What was given together, not what works together.
| Taken with | Study groups |
|---|---|
| Beta-Carotene | 7 |
| Copper | 7 |
| Iron | 7 |
| Vitamin A | 7 |
| Iodine | 6 |
| Folic Acid | 5 |
| Vitamin D | 5 |
| Vitamin B12 | 4 |
| Vitamin B6 | 3 |
14 study groups