Vitamin A, Vitamin B12, Copper and Vitamin D: study protocols
5 study groups took Vitamin A together with Vitamin B12, Copper and Vitamin D. These are the doses the studies gave. They are not a recommendation.
Fewer than 5 study groups in one unit match, too few to draw the chart.
Dose per serving from research: Vitamin B12
5 study groups in 5 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, 60% of 5 study groups.
| Daily dose | Study groups |
|---|---|
| 0.5 mcg to 1 mcg | 2 |
| 1 mcg to 2.5 mcg | 0 |
| 2.5 mcg to 5 mcg | 3 |
Dose per serving from research: Copper
5 study groups in 5 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, 80% of 5 study groups.
| Daily dose | Study groups |
|---|---|
| 500 mcg to 1 mg | 4 |
| 1 mg to 2.5 mg | 1 |
Dose per serving from research: Vitamin D
5 study groups in 5 studies say how much Vitamin D 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 5 study groups.
| Daily dose | Study groups |
|---|---|
| 2.5 mcg to 5 mcg | 4 |
| 5 mcg to 10 mcg | 1 |
Commonly used together
5 of 5 study groups took Vitamin A, Vitamin B12, Copper and Vitamin D with something else. Shown: what 3 or more different studies gave.
What was given together, not what works together.
| Taken with | Study groups |
|---|---|
| Iron | 5 |
| Vitamin C | 5 |
| Vitamin E | 5 |
| Zinc | 5 |
| Iodine | 4 |
| Vitamin B6 | 4 |
| Folic Acid | 3 |
| Niacin | 3 |
| Vitamin K | 3 |
5 study groups