Vitamin B12: study protocols
81 study groups say how much Vitamin B12 participants took a day. These are the doses the studies gave. They are not a recommendation.
Dose per serving from products
20,396 products in our catalogue print how much Vitamin B12 a serving holds.
Most common: 5 mcg to 10 mcg, 16% of 20,396 products.
| Dose per serving | Products |
|---|---|
| 1 mcg or less | 665 |
| 1 mcg to 2.5 mcg | 3,169 |
| 2.5 mcg to 5 mcg | 1,806 |
| 5 mcg to 10 mcg | 3,262 |
| 10 mcg to 25 mcg | 2,349 |
| 25 mcg to 50 mcg | 1,591 |
| 50 mcg to 100 mcg | 1,849 |
| 100 mcg to 250 mcg | 1,294 |
| 250 mcg to 500 mcg | 1,295 |
| 500 mcg to 1 mg | 1,283 |
| 1 mg to 2.5 mg | 721 |
| 2.5 mg to 5 mg | 515 |
| over 5 mg | 597 |
Dose per serving from research
81 study groups in 58 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, 25% of 81 study groups.
| Daily dose | Study groups |
|---|---|
| 1 mcg to 2.5 mcg | 13 |
| 2.5 mcg to 5 mcg | 7 |
| 5 mcg to 10 mcg | 10 |
| 10 mcg to 25 mcg | 2 |
| 25 mcg to 50 mcg | 5 |
| 50 mcg to 100 mcg | 1 |
| 100 mcg to 250 mcg | 1 |
| 250 mcg to 500 mcg | 20 |
| 500 mcg to 1 mg | 15 |
| 1 mg to 2.5 mg | 5 |
| over 2.5 mg | 2 |
Commonly used together
57 of 81 study groups took Vitamin B12 with something else. Shown: what 3 or more different studies gave. The 10 most common of 14.
What was given together, not what works together.
| Taken with | Study groups |
|---|---|
| Folic Acid | 51 |
| Vitamin B6 | 36 |
| Iron | 12 |
| Riboflavin | 9 |
| Vitamin C | 8 |
| Thiamine | 7 |
| Vitamin A | 7 |
| Vitamin E | 7 |
| Vitamin D | 6 |
| Zinc | 6 |
81 study groups