Beta-Carotene, Vitamin C and Selenium: study protocols
10 study groups took Beta-Carotene together with Vitamin C and Selenium. These are the doses the studies gave. They are not a recommendation.
Dose per serving from research: Beta-Carotene
10 study groups in 8 studies say how much Beta-Carotene participants took a day.
These are the doses the studies gave. They are not a recommendation.
Most common: 5 mg to 10 mg, 70% of 10 study groups.
| Daily dose | Study groups |
|---|---|
| 1 mg or less | 1 |
| 1 mg to 2.5 mg | 2 |
| 2.5 mg to 5 mg | 0 |
| 5 mg to 10 mg | 7 |
Dose per serving from research: Vitamin C
10 study groups in 8 studies say how much Vitamin C participants took a day.
These are the doses the studies gave. They are not a recommendation.
Most common: 100 mg to 250 mg, 70% of 10 study groups.
| Daily dose | Study groups |
|---|---|
| 100 mg to 250 mg | 7 |
| 250 mg to 500 mg | 3 |
Dose per serving from research: Selenium
8 study groups in 6 studies say how much Selenium participants took a day.
These are the doses the studies gave. They are not a recommendation.
Most common: 50 mcg to 100 mcg, 63% of 8 study groups.
| Daily dose | Study groups |
|---|---|
| 50 mcg to 100 mcg | 5 |
| 100 mcg to 250 mcg | 1 |
| 250 mcg to 500 mcg | 2 |
Commonly used together
10 of 10 study groups took Beta-Carotene, Vitamin C and Selenium with something else. Shown: what 3 or more different studies gave.
What was given together, not what works together.
| Taken with | Study groups |
|---|---|
| Vitamin E | 7 |
| Zinc | 7 |
10 study groups