Iron, Vitamin A and Folic Acid: study protocols
30 study groups took Iron together with Vitamin A and Folic Acid. These are the doses the studies gave. They are not a recommendation.
Dose per serving from research: Iron
30 study groups in 20 studies say how much Iron participants took a day.
These are the doses the studies gave. They are not a recommendation.
Most common: 25 mg to 50 mg, 33% of 30 study groups.
| Daily dose | Study groups |
|---|---|
| 5 mg or less | 1 |
| 5 mg to 10 mg | 5 |
| 10 mg to 25 mg | 5 |
| 25 mg to 50 mg | 10 |
| 50 mg to 100 mg | 9 |
Dose per serving from research: Vitamin A
27 study groups in 18 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, 59% of 27 study groups.
| Daily dose | Study groups |
|---|---|
| 250 mcg or less | 1 |
| 250 mcg to 500 mcg | 7 |
| 500 mcg to 1 mg | 16 |
| 1 mg to 2.5 mg | 3 |
Dose per serving from research: Folic Acid
29 study groups in 19 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, 59% of 29 study groups.
| Daily dose | Study groups |
|---|---|
| 100 mcg to 250 mcg | 8 |
| 250 mcg to 500 mcg | 17 |
| 500 mcg to 1 mg | 2 |
| 1 mg to 2.5 mg | 0 |
| 2.5 mg to 5 mg | 0 |
| 5 mg to 10 mg | 0 |
| 10 mg to 25 mg | 0 |
| 25 mg to 50 mg | 0 |
| over 50 mg | 2 |
Commonly used together
27 of 30 study groups took Iron, Vitamin A and Folic Acid with something else. Shown: what 3 or more different studies gave. The 10 most common of 13.
What was given together, not what works together.
| Taken with | Study groups |
|---|---|
| Zinc | 21 |
| Vitamin C | 20 |
| Copper | 13 |
| Iodine | 13 |
| Selenium | 13 |
| Vitamin B12 | 13 |
| Vitamin E | 13 |
| Vitamin D | 12 |
| Niacin | 11 |
| Vitamin B6 | 10 |
30 study groups