Caffeine and Vitamin B12: study protocols
9 study groups took Caffeine together with Vitamin B12. These are the doses the studies gave. They are not a recommendation.
Dose per serving from research: Caffeine
9 study groups in 6 studies say how much Caffeine participants took a day.
These are the doses the studies gave. They are not a recommendation.
Most common: 250 mg to 500 mg, 56% of 9 study groups.
| Daily dose | Study groups |
|---|---|
| 100 mg to 250 mg | 4 |
| 250 mg to 500 mg | 5 |
Dose per serving from research: Vitamin B12
7 study groups in 4 studies say how much Vitamin B12 participants took a day.
These are the doses the studies gave. They are not a recommendation.
Most common: 50 mg to 100 mg, 57% of 7 study groups.
| Daily dose | Study groups |
|---|---|
| 5 mcg to 10 mcg | 1 |
| 10 mcg to 25 mcg | 1 |
| 25 mcg to 50 mcg | 1 |
| 50 mcg to 100 mcg | 0 |
| 100 mcg to 250 mcg | 0 |
| 250 mcg to 500 mcg | 0 |
| 500 mcg to 1 mg | 0 |
| 1 mg to 2.5 mg | 0 |
| 2.5 mg to 5 mg | 0 |
| 5 mg to 10 mg | 0 |
| 10 mg to 25 mg | 0 |
| 25 mg to 50 mg | 0 |
| 50 mg to 100 mg | 4 |
Commonly used together
9 of 9 study groups took Caffeine and Vitamin B12 with something else. Shown: what 3 or more different studies gave.
What was given together, not what works together.
| Taken with | Study groups |
|---|---|
| Niacin | 8 |
| Beta-Alanine | 6 |
| Folic Acid | 5 |
| Taurine | 3 |
| Vitamin B6 | 3 |
9 study groups