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Iron, Folic Acid, Copper, Vitamin C and Riboflavin: study protocols

5 study groups took Iron together with Folic Acid, Copper, Vitamin C and Riboflavin. These are the doses the studies gave. They are not a recommendation.

Iron: what the research found →

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: 25 mg to 50 mg and 50 mg to 100 mg, 40% of 5 study groups each.

Daily doseStudy groups
10 mg or less
1
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

5 study groups in 3 studies say how much Folic Acid participants took a day.

These are the doses the studies gave. They are not a recommendation.

Most common: 250 mcg to 500 mcg, 100% of 5 study groups.

Daily doseStudy groups
250 mcg to 500 mcg
5

Dose per serving from research: Copper

5 study groups in 3 studies say how much Copper participants took a day.

These are the doses the studies gave. They are not a recommendation.

Most common: 1 mg to 2.5 mg and 2.5 mg to 5 mg, 40% of 5 study groups each.

Daily doseStudy groups
500 mcg or less
1
500 mcg to 1 mg
0
1 mg to 2.5 mg
2
2.5 mg to 5 mg
2

Dose per serving from research: Vitamin C

5 study groups in 3 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 to 100 mg and 100 mg to 250 mg, 40% of 5 study groups each.

Daily doseStudy groups
10 mg or less
1
10 mg to 25 mg
0
25 mg to 50 mg
0
50 mg to 100 mg
2
100 mg to 250 mg
2

Dose per serving from research: Riboflavin

5 study groups in 3 studies say how much Riboflavin participants took a day.

These are the doses the studies gave. They are not a recommendation.

Most common: 1 mg to 2.5 mg and 2.5 mg to 5 mg, 40% of 5 study groups each.

Daily doseStudy groups
250 mcg or less
1
250 mcg to 500 mcg
0
500 mcg to 1 mg
0
1 mg to 2.5 mg
2
2.5 mg to 5 mg
2

Commonly used together

5 of 5 study groups took Iron, Folic Acid, Copper, Vitamin C and Riboflavin with something else. Shown: what 3 or more different studies gave.

What was given together, not what works together.

Taken withStudy groups
Iodine
5
Niacin
5
Selenium
5
Vitamin A
5
Vitamin D
5
Vitamin E
5
Zinc
5

5 study groups

Study
Predictors of adherence to micronutrient supplementation before and during pregnancy in Vietnam
2017 · MM (multiple micronutrients) preconception group · Women of reproductive age in Vietnam intending to become pregnant
8.57 mg400 mcg286 mcg10 mg200 mcg54 weeks1,469
Assessing the adherence and acceptability to iron and folic acid compared with multiple micronutrient supplements during pregnancy: a cluster-randomized noninferiority trial in Cambodia
2025 · MMS-180 · Healthy pregnant individuals aged 18–45 years, in the first 14 weeks of a low-risk singleton pregnancy
30 mg400 mcg2 mg70 mg1.4 mg180 days516
Assessing the adherence and acceptability to iron and folic acid compared with multiple micronutrient supplements during pregnancy: a cluster-randomized noninferiority trial in Cambodia
2025 · MMS-90 · Healthy pregnant individuals aged 18–45 years, in the first 14 weeks of a low-risk singleton pregnancy
30 mg400 mcg2 mg70 mg1.4 mg180 days515
mRNA Levels of Placental Iron and Zinc Transporter Genes Are Upregulated in Gambian Women with Low Iron and Zinc Status
2017 · MMN group · Pregnant women aged 18–45 years with singleton pregnancies under 20 weeks in rural Gambia
60 mg400 mcg4 mg140 mg2.8 mg184 days75
mRNA Levels of Placental Iron and Zinc Transporter Genes Are Upregulated in Gambian Women with Low Iron and Zinc Status
2017 · PE+MMN group · Pregnant women aged 18–45 years with singleton pregnancies under 20 weeks in rural Gambia
60 mg400 mcg4 mg140 mg2.8 mg184 days75