Vitamin D, Zinc, Iron, Vitamin C and Vitamin B12: study protocols
5 study groups took Vitamin D together with Zinc, Iron, Vitamin C and Vitamin B12. These are the doses the studies gave. They are not a recommendation.
Dose per serving from research: Vitamin D
5 study groups in 5 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, 80% of 5 study groups.
| Daily dose | Study groups |
|---|---|
| 2.5 mcg to 5 mcg | 4 |
| 5 mcg to 10 mcg | 1 |
Dose per serving from research: Zinc
5 study groups in 5 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, 60% of 5 study groups.
| Daily dose | Study groups |
|---|---|
| 5 mg to 10 mg | 1 |
| 10 mg to 25 mg | 3 |
| 25 mg to 50 mg | 1 |
Dose per serving from research: Vitamin C
5 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: 50 mg to 100 mg, 60% of 5 study groups.
| Daily dose | Study groups |
|---|---|
| 50 mg or less | 1 |
| 50 mg to 100 mg | 3 |
| 100 mg to 250 mg | 0 |
| 250 mg to 500 mg | 1 |
Dose per serving from research: Vitamin B12
5 study groups in 5 studies say how much Vitamin B12 participants took a day.
These are the doses the studies gave. They are not a recommendation.
Most common: 2.5 mcg to 5 mcg, 60% of 5 study groups.
| Daily dose | Study groups |
|---|---|
| 1 mcg to 2.5 mcg | 1 |
| 2.5 mcg to 5 mcg | 3 |
| 5 mcg to 10 mcg | 0 |
| 10 mcg to 25 mcg | 1 |
Commonly used together
5 of 5 study groups took Vitamin D, Zinc, Iron, Vitamin C and Vitamin B12 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 |
| Vitamin E | 5 |
| Folic Acid | 4 |
| Selenium | 4 |
| Vitamin A | 4 |
| Vitamin B6 | 4 |
| Iodine | 3 |
| Niacin | 3 |
5 study groups