Vitamin D, Zinc and Vitamin C: study protocols
7 study groups took Vitamin D together with Zinc and Vitamin C. These are the doses the studies gave. They are not a recommendation.
Dose per serving from research: Vitamin D
6 study groups in 6 studies say how much Vitamin D participants took a day.
These are the doses the studies gave. They are not a recommendation.
Most common: 2.5 mcg to 5 mcg, 67% of 6 study groups.
| Daily dose | Study groups |
|---|---|
| 2.5 mcg or less | 1 |
| 2.5 mcg to 5 mcg | 4 |
| 5 mcg to 10 mcg | 1 |
Dose per serving from research: Zinc
7 study groups in 7 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, 71% of 7 study groups.
| Daily dose | Study groups |
|---|---|
| 5 mg to 10 mg | 1 |
| 10 mg to 25 mg | 5 |
| 25 mg to 50 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 | 1 |
| 250 mg to 500 mg | 1 |
Commonly used together
7 of 7 study groups took Vitamin D, Zinc 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 |
|---|---|
| Vitamin B12 | 6 |
| Copper | 5 |
| Iron | 5 |
| Vitamin E | 5 |
| Folic Acid | 4 |
| Selenium | 4 |
| Vitamin A | 4 |
| Vitamin B6 | 4 |
| Iodine | 3 |
| Niacin | 3 |
7 study groups