Iron, Zinc and Vitamin B12: study protocols
14 study groups took Iron together with Zinc and Vitamin B12. These are the doses the studies gave. They are not a recommendation.
Dose per serving from research: Iron
14 study groups in 12 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, 57% of 14 study groups.
| Daily dose | Study groups |
|---|---|
| 5 mg to 10 mg | 5 |
| 10 mg to 25 mg | 1 |
| 25 mg to 50 mg | 8 |
Dose per serving from research: Zinc
14 study groups in 12 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, 50% of 14 study groups.
| Daily dose | Study groups |
|---|---|
| 2.5 mg or less | 1 |
| 2.5 mg to 5 mg | 1 |
| 5 mg to 10 mg | 4 |
| 10 mg to 25 mg | 7 |
| over 25 mg | 1 |
Dose per serving from research: Vitamin B12
13 study groups in 11 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, 54% of 13 study groups.
| Daily dose | Study groups |
|---|---|
| 0.5 mcg or less | 1 |
| 0.5 mcg to 1 mcg | 3 |
| 1 mcg to 2.5 mcg | 1 |
| 2.5 mcg to 5 mcg | 7 |
| over 5 mcg | 1 |
Commonly used together
14 of 14 study groups took Iron, Zinc and Vitamin B12 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 |
|---|---|
| Vitamin A | 13 |
| Iodine | 12 |
| Copper | 11 |
| Folic Acid | 11 |
| Vitamin B6 | 11 |
| Vitamin C | 11 |
| Vitamin D | 11 |
| Vitamin E | 11 |
| Selenium | 9 |
| Niacin | 8 |
14 study groups