Calcium, Vitamin B12 and Vitamin D: study protocols
11 study groups took Calcium together with Vitamin B12 and Vitamin D. These are the doses the studies gave. They are not a recommendation.
Dose per serving from research: Calcium
11 study groups in 10 studies say how much Calcium participants took a day.
These are the doses the studies gave. They are not a recommendation.
Most common: 500 mg to 1 g, 55% of 11 study groups.
| Daily dose | Study groups |
|---|---|
| 250 mg or less | 1 |
| 250 mg to 500 mg | 3 |
| 500 mg to 1 g | 6 |
| 1 g to 2.5 g | 1 |
Dose per serving from research: Vitamin B12
10 study groups in 9 studies say how much Vitamin B12 participants took a day.
These are the doses the studies gave. They are not a recommendation.
Most common: 250 mcg to 500 mcg, 40% of 10 study groups.
| Daily dose | Study groups |
|---|---|
| 2.5 mcg to 5 mcg | 1 |
| 5 mcg to 10 mcg | 2 |
| 10 mcg to 25 mcg | 0 |
| 25 mcg to 50 mcg | 0 |
| 50 mcg to 100 mcg | 0 |
| 100 mcg to 250 mcg | 0 |
| 250 mcg to 500 mcg | 4 |
| 500 mcg to 1 mg | 3 |
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: 1,000 IU to 2,500 IU, 60% of 5 study groups.
| Daily dose | Study groups |
|---|---|
| 500 IU to 1,000 IU | 1 |
| 1,000 IU to 2,500 IU | 3 |
| 2,500 IU to 5,000 IU | 1 |
Commonly used together
11 of 11 study groups took Calcium, Vitamin B12 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 |
|---|---|
| Folic Acid | 7 |
| Vitamin B6 | 6 |
| Iron | 4 |
| Zinc | 4 |
11 study groups