Iodine: study protocols
23 study groups say how much Iodine participants took a day. These are the doses the studies gave. They are not a recommendation.
Dose per serving from products
3,069 products in our catalogue print how much Iodine a serving holds.
Most common: 100 mcg to 250 mcg, 56% of 3,069 products.
| Dose per serving | Products |
|---|---|
| 10 mcg or less | 41 |
| 10 mcg to 25 mcg | 136 |
| 25 mcg to 50 mcg | 305 |
| 50 mcg to 100 mcg | 656 |
| 100 mcg to 250 mcg | 1,717 |
| 250 mcg to 500 mcg | 122 |
| over 500 mcg | 92 |
Dose per serving from research
23 study groups in 17 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, 43% of 23 study groups.
| Daily dose | Study groups |
|---|---|
| 50 mcg or less | 1 |
| 50 mcg to 100 mcg | 2 |
| 100 mcg to 250 mcg | 10 |
| 250 mcg to 500 mcg | 2 |
| 500 mcg to 1 mg | 1 |
| 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 |
| 100 mg to 250 mg | 4 |
| over 250 mg | 1 |
Commonly used together
7 of 23 study groups took Iodine with something else. Shown: what 3 or more different studies gave.
What was given together, not what works together.
| Taken with | Study groups |
|---|---|
| Iron | 4 |
| Vitamin A | 3 |
| Zinc | 3 |
23 study groups
| Study | |||
|---|---|---|---|
| Earliest prevention of endemic goiter by iodine supplementation during pregnancy 1996 · iodine supplementation · Pregnant women in an area of moderate iodine deficiency | 300 mcg | — | 38 |
| Infant survival is improved by oral iodine supplementation 1997 · oral iodized oil · Infants in Subang, West Java, Indonesia, at risk for iodine deficiency | 100 mg | 135 days | — |
| Reduction of thyroid nodule volume by levothyroxine and iodine alone and in combination: a randomized, placebo-controlled trial 2011 · I (iodine) · Adults aged 18–65 with thyroid nodules in a normal-sized or enlarged thyroid and normal TSH | 150 mcg | 1 year | 198 |
| Reduction of thyroid nodule volume by levothyroxine and iodine alone and in combination: a randomized, placebo-controlled trial 2011 · T4+I (levothyroxine plus iodine) · Adults aged 18–65 with thyroid nodules in a normal-sized or enlarged thyroid and normal TSH | 150 mcg | 1 year | 191 |
| The National Mucolytic Study. Results of a randomized, double-blind, placebo-controlled study of iodinated glycerol in chronic obstructive bronchitis 1990 · iodinated glycerol · Patients with stable chronic obstructive bronchitis who complained of cough and difficulty bringing up sputum | 240 mg | 8 weeks | 180 |
| Improved first trimester maternal iodine status with preconception supplementation: The Women First Trial 2021 · Arm 2 (prenatal supplement) · Women of reproductive age in rural or semirural Guatemala, India, and Pakistan who were not pregnant at enrollment and subsequently became pregnant | 250 mcg | — | 835 |
| Improved first trimester maternal iodine status with preconception supplementation: The Women First Trial 2021 · Arm 1 (preconception supplement) · Women of reproductive age in rural or semirural Guatemala, India, and Pakistan who were not pregnant at enrollment and subsequently became pregnant | 250 mcg | — | 802 |
| Iodine Supplementation Decreases Hypercholesterolemia in Iodine-Deficient, Overweight Women: A Randomized Controlled Trial 2015 · intervention group · iodine-deficient, overweight or obese Moroccan women | 200 mcg | 26 weeks | — |
| Effects of an Iodine-Containing Prenatal Multiple Micronutrient on Maternal and Infant Iodine Status and Thyroid Function: A Randomized Trial in The Gambia 2020 · MMNs · Pregnant women aged 18–45 years in rural West Kiang, The Gambia, with moderate iodine deficiency | 300 mcg | — | 219 |
| The Effects of Iodine Fortified Milk on the Iodine Status of Lactating Mothers and Infants in an Area with a Successful Salt Iodization Program: A Randomized Controlled Trial 2017 · iodine fortified milk group · Healthy lactating mothers, enrolled 3–5 days postpartum, intending to exclusively breastfeed; mean age 28.2 years | 150 mcg | 4 weeks | 42 |