Zinc, Vitamin A, Folic Acid and Iron: study protocols
13 study groups took Zinc together with Vitamin A, Folic Acid and Iron. These are the doses the studies gave. They are not a recommendation.
Dose per serving from research: Zinc
13 study groups in 10 studies say how much Zinc participants took a day.
These are the doses the studies gave. They are not a recommendation.
Most common: 25 mg to 50 mg, 46% of 13 study groups.
| Daily dose | Study groups |
|---|---|
| 2.5 mg to 5 mg | 3 |
| 5 mg to 10 mg | 2 |
| 10 mg to 25 mg | 2 |
| 25 mg to 50 mg | 6 |
Dose per serving from research: Vitamin A
12 study groups in 9 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 12 study groups.
| Daily dose | Study groups |
|---|---|
| 250 mcg to 500 mcg | 4 |
| 500 mcg to 1 mg | 6 |
| 1 mg to 2.5 mg | 2 |
Dose per serving from research: Folic Acid
12 study groups in 9 studies say how much Folic Acid participants took a day.
These are the doses the studies gave. They are not a recommendation.
Most common: 250 mcg to 500 mcg, 50% of 12 study groups.
| Daily dose | Study groups |
|---|---|
| 100 mcg to 250 mcg | 4 |
| 250 mcg to 500 mcg | 6 |
| 500 mcg to 1 mg | 2 |
Dose per serving from research: Iron
11 study groups in 9 studies say how much Iron participants took a day.
These are the doses the studies gave. They are not a recommendation.
Most common: 50 mg to 100 mg, 45% of 11 study groups.
| Daily dose | Study groups |
|---|---|
| 5 mg to 10 mg | 2 |
| 10 mg to 25 mg | 1 |
| 25 mg to 50 mg | 3 |
| 50 mg to 100 mg | 5 |
Commonly used together
11 of 13 study groups took Zinc, Vitamin A, Folic Acid and Iron with something else. Shown: what 3 or more different studies gave.
What was given together, not what works together.
| Taken with | Study groups |
|---|---|
| Vitamin C | 9 |
| Copper | 6 |
| Vitamin D | 6 |
| Vitamin E | 6 |
| Iodine | 5 |
| Selenium | 5 |
| Vitamin B12 | 5 |
| Vitamin B6 | 3 |
13 study groups