Zinc, Iron and Iodine: study protocols
9 study groups took Zinc together with Iron and Iodine. These are the doses the studies gave. They are not a recommendation.
Dose per serving from research: Zinc
9 study groups in 8 studies say how much Zinc participants took a day.
These are the doses the studies gave. They are not a recommendation.
Most common: 5 mg to 10 mg, 56% of 9 study groups.
| Daily dose | Study groups |
|---|---|
| 5 mg or less | 1 |
| 5 mg to 10 mg | 5 |
| 10 mg to 25 mg | 1 |
| 25 mg to 50 mg | 2 |
Dose per serving from research: Iron
8 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, 38% of 8 study groups.
| Daily dose | Study groups |
|---|---|
| 5 mg or less | 1 |
| 5 mg to 10 mg | 3 |
| 10 mg to 25 mg | 1 |
| 25 mg to 50 mg | 1 |
| 50 mg to 100 mg | 2 |
Dose per serving from research: Iodine
9 study groups in 8 studies say how much Iodine participants took a day.
These are the doses the studies gave. They are not a recommendation.
Most common: 25 mcg to 50 mcg, 33% of 9 study groups.
| Daily dose | Study groups |
|---|---|
| 25 mcg to 50 mcg | 3 |
| 50 mcg to 100 mcg | 2 |
| 100 mcg to 250 mcg | 2 |
| 250 mcg to 500 mcg | 2 |
Commonly used together
9 of 9 study groups took Zinc, Iron and Iodine with something else. Shown: what 3 or more different studies gave. The 10 most common of 14.
What was given together, not what works together.
| Taken with | Study groups |
|---|---|
| Vitamin A | 8 |
| Copper | 7 |
| Vitamin C | 7 |
| Vitamin D | 7 |
| Vitamin E | 7 |
| Vitamin B12 | 6 |
| Folic Acid | 5 |
| Niacin | 5 |
| Selenium | 5 |
| Vitamin B6 | 5 |
9 study groups
| Study | |||||
|---|---|---|---|---|---|
| Effect of micronutrient supplementation on diarrhoeal disease among stunted children in rural South Africa 2009 · multiple micronutrients · children aged 6–24 months; three cohorts: HIV-infected children, HIV-uninfected children born to HIV-infected mothers, and HIV-uninfected children born to HIV-uninfected mothers | 10 mg | 10 mg | 50 mcg | 548 days | — |
| Effect of preventive supplementation with zinc and other micronutrients on non-malarial morbidity in Tanzanian pre-school children: a randomized trial 2012 · Multi-nutrients with zinc · Children aged 6–60 months with height-for-age z-score ≤−1.5 SD, in rural Tanzania | 10 mg | — | 90 mcg | — | 151 |
| Effect on longitudinal growth and anemia of zinc or multiple micronutrients added to vitamin A: a randomized controlled trial in children aged 6-24 months 2010 · Multiple micronutrients · Children enrolled at 6 months and followed to 24 months in rural South Africa; HIV-infected and HIV-uninfected children, both sexes | 10 mg | 10 mg | 50 mcg | 548 days | 126 |
| Maternal B-vitamin and vitamin D status before, during, and after pregnancy and the influence of supplementation preconception and during pregnancy: Prespecified secondary analysis of the NiPPeR double-blind randomized controlled trial 2023 · intervention · Women planning pregnancy; generally healthy, recruited before conception | 10 mg | 12 mg | 150 mcg | — | 870 |
| Antenatal Multiple Micronutrient Supplementation Compared to Iron-Folic Acid Affects Micronutrient Status but Does Not Eliminate Deficiencies in a Randomized Controlled Trial Among Pregnant Women of Rural Bangladesh 2019 · MM · Pregnant women aged 12–45 years in rural Bangladesh | 12 mg | 27 mg | 220 mcg | 165 days | 749 |
| 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 | 30 mg | 60 mg | 300 mcg | 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 | 30 mg | 60 mg | 300 mcg | 184 days | 75 |
| Impact of micronutrient fortification of yoghurt on micronutrient status markers and growth - a randomized double blind controlled trial among school children in Bangladesh 2013 · Fortified yoghurt (FY group) · Children aged 6–9 years attending primary schools in rural Bangladesh; boys and girls, with a high prevalence of anemia and suboptimal micronutrient status | 3 mg | 3.3 mg | 40 mcg | 1 year | 501 |
| Multiple micronutrient supplementation improves micronutrient status in primary school children in Hai Phong City, Vietnam: a randomised controlled trial 2021 · intervention · Children aged 6–9 years, apparently healthy, in rural Hai Phong City, Vietnam; included undernourished, normal-weight, and overweight/obese children | 10 mg | 10 mg | 90 mcg | 22 weeks | 175 |