Folic Acid and Vitamin A: study protocols
22 study groups took Folic Acid together with Vitamin A. These are the doses the studies gave. They are not a recommendation.
Dose per serving from research: Folic Acid
22 study groups in 14 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, 77% of 22 study groups.
| Daily dose | Study groups |
|---|---|
| 100 mcg to 250 mcg | 3 |
| 250 mcg to 500 mcg | 17 |
| 500 mcg to 1 mg | 2 |
Dose per serving from research: Vitamin A
18 study groups in 11 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, 78% of 18 study groups.
| Daily dose | Study groups |
|---|---|
| 250 mcg or less | 1 |
| 250 mcg to 500 mcg | 3 |
| 500 mcg to 1 mg | 14 |
Commonly used together
21 of 22 study groups took Folic Acid and Vitamin A 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 |
|---|---|
| Iron | 20 |
| Zinc | 15 |
| Vitamin B12 | 13 |
| Vitamin C | 13 |
| Vitamin E | 11 |
| Vitamin D | 10 |
| Copper | 9 |
| Niacin | 9 |
| Vitamin B6 | 9 |
| Iodine | 8 |
22 study groups