Lutein, Vitamin C and Zeaxanthin: study protocols
8 study groups took Lutein together with Vitamin C and Zeaxanthin. These are the doses the studies gave. They are not a recommendation.
Dose per serving from research: Lutein
8 study groups in 7 studies say how much Lutein participants took a day.
These are the doses the studies gave. They are not a recommendation.
Most common: 5 mg to 10 mg, 75% of 8 study groups.
| Daily dose | Study groups |
|---|---|
| 5 mg to 10 mg | 6 |
| 10 mg to 25 mg | 2 |
Dose per serving from research: Vitamin C
5 study groups in 5 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 and 250 mg to 500 mg, 40% of 5 study groups each.
| Daily dose | Study groups |
|---|---|
| 50 mg to 100 mg | 1 |
| 100 mg to 250 mg | 2 |
| 250 mg to 500 mg | 2 |
Dose per serving from research: Zeaxanthin
8 study groups in 7 studies say how much Zeaxanthin participants took a day.
These are the doses the studies gave. They are not a recommendation.
Most common: 1 mg to 2.5 mg, 50% of 8 study groups.
| Daily dose | Study groups |
|---|---|
| 500 mcg or less | 1 |
| 500 mcg to 1 mg | 2 |
| 1 mg to 2.5 mg | 4 |
| 2.5 mg to 5 mg | 1 |
Commonly used together
8 of 8 study groups took Lutein, Vitamin C and Zeaxanthin with something else. Shown: what 3 or more different studies gave.
What was given together, not what works together.
| Taken with | Study groups |
|---|---|
| Zinc | 7 |
| Vitamin E | 6 |
| Copper | 4 |
8 study groups