Vitamin B12, Zinc, Vitamin A and Copper: study protocols
6 study groups took Vitamin B12 together with Zinc, Vitamin A and Copper. These are the doses the studies gave. They are not a recommendation.
Dose per serving from research: Vitamin B12
6 study groups in 6 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, 67% of 6 study groups.
| Daily dose | Study groups |
|---|---|
| 1 mcg or less | 1 |
| 1 mcg to 2.5 mcg | 1 |
| 2.5 mcg to 5 mcg | 4 |
Dose per serving from research: Zinc
6 study groups in 6 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 6 study groups.
| Daily dose | Study groups |
|---|---|
| 5 mg to 10 mg | 2 |
| 10 mg to 25 mg | 3 |
| 25 mg to 50 mg | 1 |
Dose per serving from research: Vitamin A
5 study groups in 5 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, 80% of 5 study groups.
| Daily dose | Study groups |
|---|---|
| 250 mcg to 500 mcg | 1 |
| 500 mcg to 1 mg | 4 |
Dose per serving from research: Copper
6 study groups in 6 studies say how much Copper participants took a day.
These are the doses the studies gave. They are not a recommendation.
Most common: 500 mcg to 1 mg, 67% of 6 study groups.
| Daily dose | Study groups |
|---|---|
| 500 mcg to 1 mg | 4 |
| 1 mg to 2.5 mg | 2 |
Commonly used together
6 of 6 study groups took Vitamin B12, Zinc, Vitamin A and Copper with something else. Shown: what 3 or more different studies gave. The 10 most common of 11.
What was given together, not what works together.
| Taken with | Study groups |
|---|---|
| Folic Acid | 6 |
| Vitamin E | 6 |
| Iodine | 5 |
| Iron | 5 |
| Selenium | 5 |
| Vitamin B6 | 5 |
| Vitamin C | 5 |
| Vitamin D | 5 |
| Niacin | 4 |
| Riboflavin | 3 |
6 study groups