Iron, Folic Acid and Vitamin C: study protocols
23 study groups took Iron together with Folic Acid and Vitamin C. These are the doses the studies gave. They are not a recommendation.
Dose per serving from research: Iron
23 study groups in 17 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, 52% of 23 study groups.
| Daily dose | Study groups |
|---|---|
| 5 mg or less | 1 |
| 5 mg to 10 mg | 4 |
| 10 mg to 25 mg | 3 |
| 25 mg to 50 mg | 12 |
| 50 mg to 100 mg | 3 |
Dose per serving from research: Folic Acid
21 study groups in 15 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, 43% of 21 study groups.
| Daily dose | Study groups |
|---|---|
| 100 mcg or less | 1 |
| 100 mcg to 250 mcg | 7 |
| 250 mcg to 500 mcg | 9 |
| 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 |
| 50 mg to 100 mg | 2 |
Dose per serving from research: Vitamin C
22 study groups in 16 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, 45% of 22 study groups.
| Daily dose | Study groups |
|---|---|
| 5 mg to 10 mg | 3 |
| 10 mg to 25 mg | 1 |
| 25 mg to 50 mg | 6 |
| 50 mg to 100 mg | 10 |
| 100 mg to 250 mg | 2 |
Commonly used together
23 of 23 study groups took Iron, Folic Acid and Vitamin C with something else. Shown: what 3 or more different studies gave. The 10 most common of 12.
What was given together, not what works together.
| Taken with | Study groups |
|---|---|
| Vitamin A | 20 |
| Zinc | 16 |
| Copper | 13 |
| Vitamin E | 13 |
| Iodine | 12 |
| Selenium | 12 |
| Vitamin D | 12 |
| Vitamin B12 | 11 |
| Niacin | 10 |
| Vitamin B6 | 9 |
23 study groups