Folic Acid, Vitamin C, Zinc, Vitamin B12 and Vitamin A: study protocols
10 study groups took Folic Acid together with Vitamin C, Zinc, Vitamin B12 and Vitamin A. These are the doses the studies gave. They are not a recommendation.
Dose per serving from research: Folic Acid
10 study groups in 8 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, 70% of 10 study groups.
| Daily dose | Study groups |
|---|---|
| 100 mcg or less | 1 |
| 100 mcg to 250 mcg | 0 |
| 250 mcg to 500 mcg | 7 |
| 500 mcg to 1 mg | 2 |
Dose per serving from research: Vitamin C
9 study groups in 7 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, 78% of 9 study groups.
| Daily dose | Study groups |
|---|---|
| 25 mg or less | 1 |
| 25 mg to 50 mg | 1 |
| 50 mg to 100 mg | 7 |
Dose per serving from research: Zinc
10 study groups in 8 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, 70% of 10 study groups.
| Daily dose | Study groups |
|---|---|
| 5 mg or less | 1 |
| 5 mg to 10 mg | 1 |
| 10 mg to 25 mg | 7 |
| over 25 mg | 1 |
Dose per serving from research: Vitamin B12
10 study groups in 8 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, 80% of 10 study groups.
| Daily dose | Study groups |
|---|---|
| 1 mcg or less | 1 |
| 1 mcg to 2.5 mcg | 1 |
| 2.5 mcg to 5 mcg | 8 |
Dose per serving from research: Vitamin A
9 study groups in 7 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, 89% of 9 study groups.
| Daily dose | Study groups |
|---|---|
| 250 mcg or less | 1 |
| 250 mcg to 500 mcg | 0 |
| 500 mcg to 1 mg | 8 |
Commonly used together
10 of 10 study groups took Folic Acid, Vitamin C, Zinc, Vitamin B12 and Vitamin A with something else. Shown: what 3 or more different studies gave.
What was given together, not what works together.
| Taken with | Study groups |
|---|---|
| Copper | 10 |
| Vitamin D | 10 |
| Vitamin E | 10 |
| Iodine | 9 |
| Iron | 9 |
| Selenium | 9 |
| Vitamin B6 | 9 |
| Niacin | 8 |
| Riboflavin | 5 |
| Thiamine | 3 |
10 study groups