PlainVitamins

Potassium Iodide

by NOW · tablet or pill · 60 tablets

  • On the market (NIH)
  • UPC 7 33739 01454 2
  • DSLD label 313980
  • Serving 3 tablets
  • 20 servings

Potassium Iodide by NOW lists one ingredient: 90 mg of potassium iodide per serving of 3 tablets. Its current label entered the NIH Dietary Supplement Label Database on May 23, 2024.

What is in Potassium Iodide?

Each row as the label prints it, per serving of 3 tablets. The capsule beside an amount places it among every product in the NIH database that lists the same ingredient: the bar is the middle half of their amounts, the line in it the median, the whiskers the 10th and 90th percentiles; the green tick is the FDA Daily Value and the red dashed tick the adult upper limit (IOM).

Potassium Iodide: Supplement Facts rows against the market (DSLD label 313980, January 2026 release)
IngredientAmount% DVAmong products listing it
Potassium Iodide90 mg2%*Potassium in Potassium Iodide against 11,614 products90 mg per serving; the middle half of products list 50 mg to 190 mg, the median 99 mg.DV 4,700 mg90 mg

55% of 11,614 products listing potassium give more (median 99 mg).

* % Daily Value computed from the printed amount and the FDA Daily Value (21 CFR 101.9); the label prints none for that row.

Source: NIH ODS Dietary Supplement Label Database, label 313980 (entered May 23, 2024), version 9.4.0. See the label on DSLD or its label image (PDF). Amounts are what the maker printed; DSLD does not test products. Daily Values: the FDA's Daily Value page.

Is that a lot?

Every amount on this label with a position sits within the middle 80% of the products that list the same ingredient.

The NIH database records one serving a day from the label's directions; its % Daily Values are for adults and children 4 or more years of age. The directions as printed are further down this page.

The Tolerable Upper Intake Level is the most of a nutrient per day, from food, water and supplements together, that is likely to pose no risk for almost all adults (Institute of Medicine, 2011). It does not apply under medical supervision. This page compares labels; it is not medical advice.

Sources: amounts from the DSLD label; Daily Values from 21 CFR 101.9(c)(8)(iv); adult upper limits from the Institute of Medicine's DRI summary tables (2011). How positions are computed.

Which products have the closest formulas?

6 products list the very same ingredients; the nearest amounts come first.

Source: ingredient lists of every product's current label in DSLD (version 9.4.0); similarity weights each shared ingredient by how rare it is.

What does the label say about taking it?

Quoted from the label as DSLD transcribed it: the maker's words, including any claim about what the product does, which the FDA has not evaluated and PlainVitamins does not endorse.

Directions
Suggested Usage: As directed by a healthcare practitioner for single day short-term use only: Adults and adolescents 3 tablets.
Warnings
Not for use by children 12 and under unless recommended by a healthcare practitioner.
Caution: Potassium Iodide in the form contained in this product should only be taken as directed by a healthcare practitioner.
Advise your healthcare practitioner if pregnant/nursing, taking medication, or if you have a medical condition.
Do not exceed suggested usage. For short-term use only. Discontinue use if you develop swollen salivary glands, stomach upset, or skin rash.
Do not use if you have an iodine sensitivity, a thyroid condition, or if you are taking anti-hypertension or anti-thyroid medications.
Keep out of reach of children.
Not manufactured with yeast, wheat, gluten, soy, milk, egg, fish, shellfish, tree nut or sesame ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.
Allergens and what it does not contain
Non-GMO Project Verified nongmoproject.org
Not manufactured with yeast, wheat, gluten, soy, milk, egg, fish, shellfish, tree nut or sesame ingredients.
Storage
Store in a cool, dry place after opening.

Source: label statements in DSLD label 313980.

What else is on the label?

Other ingredients: Microcrystalline Cellulose, Stearic Acid, Silicon Dioxide.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): Non-GMO Project Verified nongmoproject.org Triangle K (Kosher); GMP Quality Assured. Listed with: Non-GMO Project Verified (a seal is the label's claim; the certifier's own list confirms it).

How many labels does Potassium Iodide have?

5 labels are on file under this name since October 25, 2012: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 313980 (current) Entered May 23, 2024 · on the market · 60 tablets · UPC 7 33739 01454 2
  2. Label 204988 Entered July 24, 2019 · on the market · 60 tablets · UPC 7 33739 01454 2
  3. Label 70051 Entered January 25, 2017 · off the market December 6, 2018 · 60 tablets · UPC 7 33739 01454 2
  4. Label 51800 Entered October 22, 2015 · off the market September 20, 2016 · 60 tablets · UPC 7 33739 01454 2
  5. Label 14827 Entered October 25, 2012 · off the market September 30, 2015 · 60 tablets · UPC 7 33739 01454 2

Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).

Who makes it?

The label names NOW Foods (manufacturer), Bloomingdale, IL. All NOW products.

Where next?