Vitamin C, Folic Acid, Vitamin A and Iron: study protocols
6 study groups took Vitamin C together with Folic Acid, Vitamin A and Iron. These are the doses the studies gave. They are not a recommendation.
Dose per serving from research: Vitamin C
6 study groups in 4 studies say how much Vitamin C participants took a day.
These are the doses the studies gave. They are not a recommendation.
Most common: 5 mg to 10 mg and 25 mg to 50 mg and 50 mg to 100 mg, 33% of 6 study groups each.
| Daily dose | Study groups |
|---|---|
| 5 mg to 10 mg | 2 |
| 10 mg to 25 mg | 0 |
| 25 mg to 50 mg | 2 |
| 50 mg to 100 mg | 2 |
Dose per serving from research: Folic Acid
6 study groups in 4 studies say how much Folic Acid participants took a day.
These are the doses the studies gave. They are not a recommendation.
Most common: 100 mcg to 250 mcg, 50% of 6 study groups.
| Daily dose | Study groups |
|---|---|
| 100 mcg to 250 mcg | 3 |
| 250 mcg to 500 mcg | 1 |
| 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 | 2 |
Dose per serving from research: Vitamin A
6 study groups in 4 studies say how much Vitamin A participants took a day.
These are the doses the studies gave. They are not a recommendation.
Most common: 500 mcg to 1 mg, 67% of 6 study groups.
| Daily dose | Study groups |
|---|---|
| 250 mcg to 500 mcg | 2 |
| 500 mcg to 1 mg | 4 |
Dose per serving from research: Iron
5 study groups in 3 studies say how much Iron participants took a day.
These are the doses the studies gave. They are not a recommendation.
Most common: 10 mg to 25 mg, 40% of 5 study groups.
| Daily dose | Study groups |
|---|---|
| 5 mg to 10 mg | 1 |
| 10 mg to 25 mg | 2 |
| 25 mg to 50 mg | 1 |
| 50 mg to 100 mg | 1 |
Commonly used together
3 of 6 study groups took Vitamin C, Folic Acid, Vitamin A and Iron 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 |
6 study groups
| Study | ||||||
|---|---|---|---|---|---|---|
| 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 | 400 mcg | 1 mg | — | — | — |
| Short-term daily or weekly administration of micronutrient Sprinkles has high compliance and does not cause iron overload in Chinese schoolchildren: a cluster-randomised trial 2006 · daily group · Children aged 3–6 years in a kindergarten in northern China | 50 mg | 150 mcg | 300 mcg | 30 mg | 13 weeks | — |
| Weekly micronutrient supplementation to build iron stores in female Indonesian adolescents 1997 · daily supplementation group · female Indonesian high-school adolescents | 60 mg | 250 mcg | 750 mcg | 60 mg | 90 days | — |
| Weekly micronutrient supplementation to build iron stores in female Indonesian adolescents 1997 · weekly supplementation group (60 mg Fe) · female Indonesian high-school adolescents | 8.57 mg | 71.4 mg | 857 mcg | 8.57 mg | 90 days | — |
| Weekly micronutrient supplementation to build iron stores in female Indonesian adolescents 1997 · weekly supplementation group (120 mg Fe) · female Indonesian high-school adolescents | 8.57 mg | 71.4 mg | 857 mcg | 17.1 mg | 90 days | — |
| Micronutrient Sprinkles reduce anemia among 9- to 24-mo-old children when delivered through an integrated health and nutrition program in rural Haiti 2007 · Sprinkles-WSB (S-WSB) · Children aged 9–24 months in rural Haiti receiving take-home fortified wheat-soy blend rations | 30 mg | 160 mcg | 400 mcg | 12.5 mg | 60 days | 254 |