Vitamin C, Vitamin A and Vitamin E: study protocols
5 study groups took Vitamin C together with Vitamin A and Vitamin E. These are the doses the studies gave. They are not a recommendation.
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: 50 mg or less and 50 mg to 100 mg and 250 mg to 500 mg and 500 mg to 1 g and 1 g to 2.5 g, 20% of 5 study groups each.
| Daily dose | Study groups |
|---|---|
| 50 mg or less | 1 |
| 50 mg to 100 mg | 1 |
| 100 mg to 250 mg | 0 |
| 250 mg to 500 mg | 1 |
| 500 mg to 1 g | 1 |
| 1 g to 2.5 g | 1 |
Commonly used together
4 of 5 study groups took Vitamin C, Vitamin A and Vitamin E with something else. Shown: what 3 or more different studies gave.
What was given together, not what works together.
| Taken with | Study groups |
|---|---|
| Zinc | 3 |
5 study groups
| Study | |||||
|---|---|---|---|---|---|
| Antioxidant vitamins or lactulose for the prevention of the recurrence of colorectal adenomas. Colorectal Cancer Study Group of the University of Modena and the Health Care District 16 1993 · Group 1 (vitamins) · Individuals after endoscopic polypectomy; age and sex not reported; adenomas were the condition of interest. | 1 g | 30,000 IU | 70 mg | 548 days | — |
| Megadose vitamins in bladder cancer: a double-blind clinical trial 1994 · megadose vitamins arm · Patients with biopsy-confirmed transitional cell carcinoma of the bladder receiving BCG immunotherapy | 2 g | — | — | — | 35 |
| Effects of maternal micronutrient supplementation on fetal loss and infant mortality: a cluster-randomized trial in Nepal 2003 · Multiple micronutrients · Pregnant women in rural Nepal | 100 mg | 1 mg | 10 mg | — | — |
| Supplementation with multivitamins and vitamin A and incidence of malaria among HIV-infected Tanzanian women 2014 · multivitamins with vitamin A · HIV-infected pregnant women in Tanzania | 500 mg | 30 mg | 30 mg | 1249 days | — |
| Micronutrient fortified milk improves iron status, anemia and growth among children 1-4 years: a double masked, randomized, controlled trial 2010 · Micronutrient-fortified milk (MN group) · Children aged 1–4 years in India; many had anemia, iron deficiency, or growth faltering | 40.2 mg | 156 mcg | 7.5 mg | 1 year | 316 |