Iron, Selenium, Iodine, Vitamin A and Riboflavin: study protocols
9 study groups took Iron together with Selenium, Iodine, Vitamin A and Riboflavin. These are the doses the studies gave. They are not a recommendation.
Dose per serving from research: Iron
9 study groups in 7 studies say how much Iron participants took a day.
These are the doses the studies gave. They are not a recommendation.
Most common: 5 mg to 10 mg, 44% of 9 study groups.
| Daily dose | Study groups |
|---|---|
| 5 mg to 10 mg | 4 |
| 10 mg to 25 mg | 1 |
| 25 mg to 50 mg | 2 |
| 50 mg to 100 mg | 2 |
Dose per serving from research: Selenium
9 study groups in 7 studies say how much Selenium participants took a day.
These are the doses the studies gave. They are not a recommendation.
Most common: 5 mcg to 10 mcg and 10 mcg to 25 mcg and 50 mcg to 100 mcg and 100 mcg to 250 mcg, 22% of 9 study groups each.
| Daily dose | Study groups |
|---|---|
| 5 mcg to 10 mcg | 2 |
| 10 mcg to 25 mcg | 2 |
| 25 mcg to 50 mcg | 1 |
| 50 mcg to 100 mcg | 2 |
| 100 mcg to 250 mcg | 2 |
Dose per serving from research: Iodine
9 study groups in 7 studies say how much Iodine participants took a day.
These are the doses the studies gave. They are not a recommendation.
Most common: 100 mcg to 250 mcg, 33% of 9 study groups.
| Daily dose | Study groups |
|---|---|
| 10 mcg to 25 mcg | 2 |
| 25 mcg to 50 mcg | 0 |
| 50 mcg to 100 mcg | 2 |
| 100 mcg to 250 mcg | 3 |
| 250 mcg to 500 mcg | 2 |
Dose per serving from research: Vitamin A
9 study groups in 7 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, 33% of 9 study groups.
| Daily dose | Study groups |
|---|---|
| 100 mcg to 250 mcg | 2 |
| 250 mcg to 500 mcg | 2 |
| 500 mcg to 1 mg | 3 |
| 1 mg to 2.5 mg | 2 |
Dose per serving from research: Riboflavin
9 study groups in 7 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, 33% of 9 study groups.
| Daily dose | Study groups |
|---|---|
| 100 mcg to 250 mcg | 2 |
| 250 mcg to 500 mcg | 2 |
| 500 mcg to 1 mg | 0 |
| 1 mg to 2.5 mg | 3 |
| 2.5 mg to 5 mg | 2 |
Commonly used together
9 of 9 study groups took Iron, Selenium, Iodine, Vitamin A and Riboflavin with something else. Shown: what 3 or more different studies gave. The 10 most common of 11.
What was given together, not what works together.
| Taken with | Study groups |
|---|---|
| Copper | 9 |
| Niacin | 9 |
| Zinc | 9 |
| Folic Acid | 8 |
| Vitamin B6 | 7 |
| Vitamin C | 7 |
| Vitamin D | 7 |
| Vitamin E | 7 |
| Vitamin B12 | 5 |
| thiamin | 5 |
9 study groups
| Study | |||||||
|---|---|---|---|---|---|---|---|
| Effects of multimicronutrient supplementation on helminth reinfection: a randomized, controlled trial in Kenyan schoolchildren 2003 · multimicronutrient supplementation · Schoolchildren in Nyanza Province, Kenya; age and sex not specified | 18 mg | 40 mcg | 150 mcg | 1 mg | 1.6 mg | 335 days | — |
| 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 mg | 9.29 mcg | 21.4 mcg | 114 mcg | 200 mcg | 54 weeks | 1,469 |
| Effects of therapeutic zinc supplementation for diarrhea and two preventive zinc supplementation regimens on the incidence and duration of diarrhea and acute respiratory tract infections in rural Laotian children: A randomized controlled trial 2020 · MNP group · Children aged 6–23 months in rural Laos | 6 mg | 17 mcg | 90 mcg | 400 mcg | 500 mcg | 40 weeks | 852 |
| 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 mg | 65 mcg | 150 mcg | 800 mcg | 1.4 mg | 180 days | 516 |
| 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 mg | 65 mcg | 150 mcg | 800 mcg | 1.4 mg | 180 days | 515 |
| Iron status and inherited haemoglobin disorders modify the effects of micronutrient powders on linear growth and morbidity among young Lao children in a double-blind randomised trial 2019 · MNP group · Children aged 6–23 months in rural Lao PDR; young children, including children with anaemia and inherited haemoglobin disorders | 6 mg | 17 mcg | 90 mcg | 400 mcg | 500 mcg | 36 weeks | 852 |
| Impact of Preconception Micronutrient Supplementation on Anemia and Iron Status during Pregnancy and Postpartum: A Randomized Controlled Trial in Rural Vietnam 2016 · Multiple micronutrients (MM) · Women aged 18–40 planning pregnancy in rural Vietnam; no specific diagnosed condition required | 8.57 mg | 9.29 mcg | 21.4 mcg | 114 mcg | 200 mcg | 56 weeks | 508 |
| 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 mg | 130 mcg | 300 mcg | 1.6 mg | 2.8 mg | 184 days | 75 |
| 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 mg | 130 mcg | 300 mcg | 1.6 mg | 2.8 mg | 184 days | 75 |