Vitamin A and Iodine: study protocols
7 study groups took Vitamin A together with Iodine. These are the doses the studies gave. They are not a recommendation.
Fewer than 5 study groups in one unit match, too few to draw the chart.
Dose per serving from research: Iodine
7 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: 25 mcg to 50 mcg, 43% of 7 study groups.
| Daily dose | Study groups |
|---|---|
| 25 mcg to 50 mcg | 3 |
| 50 mcg to 100 mcg | 1 |
| 100 mcg to 250 mcg | 2 |
| 250 mcg to 500 mcg | 0 |
| 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 | 0 |
| 100 mg to 250 mg | 1 |
Commonly used together
6 of 7 study groups took Vitamin A and Iodine with something else. Shown: what 3 or more different studies gave. The 10 most common of 12.
What was given together, not what works together.
| Taken with | Study groups |
|---|---|
| Iron | 6 |
| Zinc | 6 |
| Copper | 5 |
| Vitamin B12 | 5 |
| Vitamin C | 5 |
| Vitamin E | 5 |
| Vitamin B6 | 4 |
| Vitamin D | 4 |
| Folic Acid | 3 |
| Selenium | 3 |
7 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 | 1,250 IU | 50 mcg | 548 days | — |
| 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 | 1,250 IU | 50 mcg | 548 days | 126 |
| Vitamin A supplementation in iodine-deficient African children decreases thyrotropin stimulation of the thyroid and reduces the goiter rate 2007 · IS+VAS group · Children aged 5–14 years with concurrent mild-to-moderate vitamin A and iodine deficiency | 200,000 IU | 191 mg | 26 weeks | — |
| 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 | 770 mcg | 220 mcg | 165 days | 749 |
| Newborn micronutrient status biomarkers in a cluster-randomized trial of antenatal multiple micronutrient compared with iron folic acid supplementation in rural Bangladesh 2020 · MM · Pregnant women in rural Bangladesh; age range not specified; no disease condition specified | 770 mcg | 220 mcg | — | 176 |
| 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 | 140 mcg | 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 | 400 mcg | 90 mcg | 22 weeks | 175 |