mineral
Iodine supplements
Half of the 6,382 iodine supplements in the NIH label database that print an amount list 150 mcg or less per serving; the middle half list 75 mcg to 150 mcg, and 1 in 67 of the 6,300 with a plausible amount give more than the adult upper limit at the most servings their labels direct (DSLD version 9.4.0, January 2026). The 110 products whose only supplement ingredient is iodine list a median of 237.5 mcg, and 34% of them give more than the upper limit.
- Products listing it
- 6,6366,382 print an amount; 251 list it inside a blend without an amount
- Median per serving
- 150 mcgmiddle half 75 mcg to 150 mcg
- FDA Daily Value
- 150 mcgthe median is 100% of it
- Adult upper limit (IOM)
- 1,100 mcg94 products go above it a day
How much iodine do supplements contain?
The median product lists 150 mcg per serving. One in ten lists 37.5 mcg or less, one in ten 225 mcg or more. The amount printed most often is 150 mcg (2,658 products).
Products by amount of iodine per serving
6,382 products, log scale; extreme 0.2% at each end left out of the drawing.
Source: Supplement Facts rows of every product's current label, NIH ODS Dietary Supplement Label Database version 9.4.0; amounts in one measure (weight).
How do the amounts compare with the Daily Value and the upper limit?
The FDA Daily Value for iodine is 150 mcg (adults and children 4 and older). The median product gives 100% of it per serving; the 90th percentile 150%.
The adult Tolerable Upper Intake Level is 1,100 mcg a day (total intake from food, water and supplements). At the most servings their labels direct, 94 of the 6,300 products with a plausible amount (1.5%) give more than that from the supplement alone (what counts as plausible).
The upper limit is for total intake from food, water and supplements unless stated, and does not apply under medical supervision. A label amount is what the maker printed. This is data, not advice: the NIH ODS fact sheets explain what each nutrient does.
Sources: 21 CFR 101.9(c)(8)(iv) (Daily Values); Institute of Medicine, DRI summary tables (2011) (upper limits); on reading them, the FDA's Daily Value page.
Which products list the most iodine?
On-market products, per serving, with a plausible amount: the rule leaves out likely entry slips, such as an amount far beyond every other label with no %DV or strength on the label to back it (each product page still shows its own amount, marked).
- Potassium IodateVitamin Research Products50,000 mcg
- IodineBio-Tech Pharmacal50,000 mcg
- Iodoral IOD - 50Optimox50,000 mcg
- Iodine & RhodiolaDr. Wong's Essentials30,000 mcg
- Thyroid CareTerry Naturally30,000 mcg
- Thyroid CareEuroMedica30,000 mcg
- Thyroid Care PlusTerry Naturally30,000 mcg
- Tri-Iodine 25 mgTerry Naturally25,000 mcg
Have the amounts changed over the years?
Products whose current label entered DSLD in 2011 list a median of 150 mcg; those entered in 2025, 150 mcg.
| Year | Products | Median per serving |
|---|---|---|
| 2011 | 149 | 150 mcg |
| 2012 | 433 | 150 mcg |
| 2013 | 538 | 150 mcg |
| 2014 | 256 | 150 mcg |
| 2015 | 268 | 150 mcg |
| 2016 | 310 | 150 mcg |
| 2017 | 329 | 150 mcg |
| 2018 | 280 | 120 mcg |
| 2019 | 331 | 150 mcg |
| 2020 | 640 | 150 mcg |
| 2021 | 514 | 104.5 mcg |
| 2022 | 643 | 150 mcg |
| 2023 | 580 | 150 mcg |
| 2024 | 598 | 150 mcg |
| 2025 | 513 | 150 mcg |
Source: DSLD label entry dates and amounts, current labels.
In which products and brands?
Products listing iodine by DSLD product type
Brands listing it most: Nature's Way (201), Douglas Laboratories (159), Nature's Plus (158), Centrum (69), Bronson (57), New Chapter (57), XYMOGEN (56), NOW (51), Metagenics (50), Rainbow Light (48).
Every product listing iodine
6,636 products, A to Z by name (page 19 of 133), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- Century Complete Multivitamin/Multimineral SupplementEqualine150 mcg
- Century FormulaSwanson Premium Brand · off the market150 mcg
- Century Formula Without IronSwanson Premium Brand · off the market150 mcg
- Century MatureSmart Sense150 mcg
- Century MatureGoodSense150 mcg
- Century MatureSignature Care150 mcg
- Century MatureMeijer150 mcg
- Century menSignature Care150 mcg
- Century Men'sEqualine150 mcg
- Century Senior 50+ FormulaSafeway Care150 mcg
- Century Senior Ultimate Men'sTop Care150 mcg
- Century Ultimate Men'sTop Care150 mcg
- Century Ultimate Men's Senior FormulaSafeway Care150 mcg
- Century Ultimate Women'sTop Care150 mcg
- Century WomenGoodSense150 mcg
- Century Women's Complete 50+TopCare Health150 mcg
- CeroviteRugby150 mcg
- Cerovite Jr.Rugby150 mcg
- Cerovite LiquidRugby150 mcg
- Cerovite SeniorRugby150 mcg
- CertaVite SeniorMajor150 mcg
- CertaVite with AntioxidantsMajor150 mcg
- Certified Men's MultivitaminRainbow Light · off the market55 mcg
- Certified Women's MultivitaminRainbow Light · off the market75 mcg
- Champion BlendIsotonix · off the market225 mcg
- Chelated MineralUSANA · off the market150 mcg
- Chelated MineralsCarlson300 mcg
- Chelated MultimineralsBluebonnet225 mcg
- Chelated Multiminerals Iron-FreeBluebonnet225 mcg
- Chelated Solamins MultimineralSolgar150 mcg
- Chewable 50+ Men Multivitamin + Supporting Herbs Wild BerrySuper Nutrition SimplyOne · off the market150 mcg
- Chewable 50+ Women Multivitamin + Supporting Herbs Wild BerrySuper Nutrition SimplyOne150 mcg
- Chewable Advanced Multi EA Mixed FruitBariatric Advantage Innovations75 mcg
- Chewable Advanced Multi EA StarwberryBariatric Advantage Innovations150 mcg
- Chewable Advanced Multi EA StrawberryBariatric Advantage Innovations75 mcg
- Chewable Advanced Multi EA without Iron Mixed FruitBariatric Advantage Innovations150 mcg
- Chewable Heart-Shaped Love BitesNature's Plus · off the market100 mcg
- Chewable Kids Multi Cherry Flavored365 Everyday Value · off the market100 mcg
- Chewable Kids' MultiIVL Institute For Vibrant Living100 mcg
- Chewable Kids' MultiCHK Nutrition100 mcg
- Chewable Mega Teen Berry FlavorGNC Teens · off the market150 mcg
- Chewable Men Multivitamin + Supporting Herbs Natural Wild BerrySuper Nutrition SimplyOne · off the market150 mcg
- Chewable MineralsMichael's Naturopathic Programs · off the market30 mcg
- Chewable MineralsMNP Michael's Naturopathic Programs30 mcg
- Chewable Minerals Fruit Punch FlavorMNP Michael's Naturopathic Programs30 mcg
- Chewable Minerals Natural Fruit Punch FlavorMNP Michael's Naturopathic Programs · off the market30 mcg
- Chewable Minerals Natural Fruit Punch FlavorMH Michael's Health Naturopathic Programs30 mcg
- Chewable Minerals Natural Tropical Fruit FlavorMichael's Naturopathic Programs30 mcg
- Chewable Multi-Vitamin for ChildrenVitables100 mcg
- Chewable Multi-Vitamin Natural Strawberry FlavorWhole Foods Kids Essentials100 mcg