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Updated: 06 Apr 2026

10 Best Iodine Supplements Tablets

#1 Best Pick
Best Naturals Kelp Supplement 150 Mcg Tablet, 300 Tablets

Best Naturals Kelp Supplement 150 Mcg Tablet, 300 Tablets

Brand: Best Naturals
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  • 150 mcg per tablet – Delivers a consistent dose of kelp in each tablet.
  • 300-tablet bottle – Generous supply for daily use.
  • Natural mineral source – Kelp provides iodine and other minerals.
  • Clean formulation – Free from artificial colors, flavors, and preservatives.
  • Easy daily use – Convenient tablet format for simple supplementation.
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#2 Best Value
NOW Foods Potassium Plus Iodine, 180 Tablets

NOW Foods Potassium Plus Iodine, 180 Tablets

Brand: NOW
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  • THYROID SUPPORT*/SUPPORTS ELECTROLYTE BALANCE*: Potassium Iodide (KI) is a compound that contains iodine, a nutrient necessary for normal thyroid function.* Iodine, in the form of iodide, is an integral part of the thyroid secretions that regulate cellular metabolism and energy production.*
  • NUTRITION FOR HEALTHY THYROID FUNCTION*: Potassium plus Iodine also supplies potassium, a mineral that is essential for the maintenance of healthy water and electrolyte balance, as well as whole body pH.*
  • CLASSIFICATIONS/CERTIFICATIONS: Vegan, Soy Free, Non-GMO
  • GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our laboratory/testing methods (for stability, potency, and product formulation).
  • Packaged in the USA by a family owned and operated company since 1968.
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#3 Budget Pick
Double Wood Supplements Potassium Iodide Radiation Tablets 130mg (Yoduro de Potasio Pastillas) 180 Anti Radiation Pills (KI Tablets) Nuclear Protection (Tabletas de Radiaci?n) by

Double Wood Supplements Potassium Iodide Radiation Tablets 130mg (Yoduro de Potasio Pastillas) 180 Anti Radiation Pills (KI Tablets) Nuclear Protection (Tabletas de Radiaci?n) by

Brand: Double Wood Supplements
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  • Potassium Iodide Tablets for Radiation Exposure - Potassium Iodide is a short term use emergency supplement that helps protect the thyroid from Radiation exposure
  • Only Take if Directed by Physician, State, or Local Health Authorities - KI Tablets used an Anti Radiation Pills should be taken only when directed by your physician, state, or local health authorities
  • For Short Term Use Only - Do not take for longer than 2 weeks unless directed by your physician, a state, or local health official. For adults over the age of 18, take 130mg (2 tablets) per day. Individuals who are 12-18 years old and over 150lbs should take 130mg (2 tablets) per day. Individuals who are under 18 years old and under 150lbs should take 65mg (1 tablet). Individuals under 12 years of age should take 65mg (1 tablet) regardless of weight.
  • Certificate of Analysis Available Upon Request - Please reach out to us directly for a copy of our Certificate of Analysis
  • Manufactured in the USA - Double Wood's Potassium Iodide tablets are manufactured right here in the USA where heavy metal and microbe testing is conducted to ensure the product is safe
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#4 Top Choice
Nutricost Iodine (Natural Iodine from Organic Sea Kelp) 325mcg, 120 Capsules, Vegetarian, Non-GMO & Gluten Free

Nutricost Iodine (Natural Iodine from Organic Sea Kelp) 325mcg, 120 Capsules, Vegetarian, Non-GMO & Gluten Free

Brand: Nutricost
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  • 325mcg Of Iodine In Each Capsule
  • Natural Iodine from Sea Kelp
  • 120 Easy-To-Swallow Capsules
  • Non-GMO, Gluten Free, Vegetarian Friendly
  • Made In A GMP Compliant Facility
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#5 Popular Choice
Potassium Iodide Tablets (2 Pack) 130mg - 280 Tablets EXP 10/2032 - Iodine Tablets - Potassium Iodine Pills - YODO Naciente - KI Pills - Potassium Iodine Tablets - Yoduro de Potasio - by Nutri

Potassium Iodide Tablets (2 Pack) 130mg - 280 Tablets EXP 10/2032 - Iodine Tablets - Potassium Iodine Pills - YODO Naciente - KI Pills - Potassium Iodine Tablets - Yoduro de Potasio - by Nutri

Brand: Nature's Fusions
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  • EXPIRATION: December 2032 - According to the NRC, the shelf life of Potassium Iodide Tablets can be prolonged beyond 10 years owing to the inherent stability of iodine salt mineral supplements. RECOMMENDED USAGE: Intended for short-term use only (up to 2 weeks). Adults/Adolescents: 130 mg (2 tablets). Children: 65 mg (1 tablet).
  • 280 GENUINE TABLETS: These tablets are genuinely divisible, making them suitable for smaller children and infants. Unlike capsules, which are challenging to divide, these tablets have a longer shelf life. The usage is identical to potassium iodate tablets, ki pills 130mg, or other iodine supplements.
  • IODINE - Potassium Iodide (KI) is a stable iodine salt. Since the body does not naturally produce iodine, the inclusion of 130 mg Potassium Iodide Pills is ideal for emergency or survival kits.
  • ASSURED PURITY - Our Potassium Iodine Drops, potassium iodide tablets, and potassium iodine pills utilize Potassium iodide crystals of USP grade directly sourced. We provide third-party lab tests assessing heavy metals, potency, purity, and various other factors.
  • PRODUCED IN THE USA: We stand out as the sole brand overseeing the sourcing, testing, production, and shipping processes from our FDA-registered Food-Grade facility. This unique approach allows us to provide unparalleled quality and value. Unlike others, our bottles never bear the label "Manufactured For." Our extensive range of iodine supplements includes Potassium Iodide Pills and Potassium Iodide 130 mg tablets.
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#6 Top Pick
Life Extension Potassium Iodide Tablets, 130mg, 14 tabs

Life Extension Potassium Iodide Tablets, 130mg, 14 tabs

Brand: Life Extension
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  • Potassium iodide is a salt of stable iodine absorbed by the thyroid gland
  • Non-gmo
  • Vegetarian
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#7 Top Pick
Potassium Iodide Tablets 130 mg - (140 High-Dose Tablets) EXP 04/2032 - Ki Pills Potassium Iodine Tablets 130 mg - Potassium Iodine Pills YODO Naciente, Thyroid Protection Supplement - 140 Tablets

Potassium Iodide Tablets 130 mg - (140 High-Dose Tablets) EXP 04/2032 - Ki Pills Potassium Iodine Tablets 130 mg - Potassium Iodine Pills YODO Naciente, Thyroid Protection Supplement - 140 Tablets

Brand: Nature's Fusions
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  • EXPIRATION: 04/2032 - The NRC has stated that the shelf life of Potassium Iodide Tablets can be extended greater than 10 years due to the inherent stability of iodine salt mineral supplements. SUGGESTED USE: For short-term use only (up to 2 weeks). Adult/Adultescent: 130 mg (2 tablets). Children: 65 mg (1 tablet).
  • 140 REAL TABLETS: These are actually tablets that are easily divisible if needed for smaller children and infants. Capsules can't be divided easily and have a shorter shelf life than tablets. Use is the same as potassium iodate tablets, ki pills 130mg or other iodine supplements.
  • IODINE FOR PROTECTION - Potassium Iodide (KI) is a stable iodine salt. Taking a stable iodine helps the thyroid absorb and be "full" of iodine. The body does not produce Iodine naturally, which makes 130 mg Potassium Iodide Pills perfect for emergency or survival kits.
  • GUARANTEED PURE - Our Potassium Iodine Drops, potassium iodide tablets, and potassium iodine pills use USP grade Potassium iodide crystals directly from the source. We offer 3rd party lab tests that test for heavy metals, potency, purity, and much more.
  • MADE IN THE USA: We are the only brand that sources, tests, produces, and ships everything from our own in-house FDA registered Food-Grade facility. That's why we can offer the best quality and the best price. Our bottles never say "Manufactured For" like everyone else. We produce many iodine supplements including Potassium Iodide Pills and Potassium iodide 130 mg tablets.
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#8 Top Pick
Nature's Own Deep Sea Kelp 1000mg Tablets 200 - Contains Iodine for Healthy Thyroid Gland Function & Aids Thyroid Hormone Production - Supports Energy, and Mental Function

Nature's Own Deep Sea Kelp 1000mg Tablets 200 - Contains Iodine for Healthy Thyroid Gland Function & Aids Thyroid Hormone Production - Supports Energy, and Mental Function

Brand: Nature's Own
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  • Nature's own deep sea kelp 1000mg provides a source of naturally derived iodine
  • Benefits of iodine: Supports healthy growth and development in children and supports healthy foetal development
  • Maintains healthy thyroid gland function, assists thyroid hormone production, and supports energy levels and mental function
  • Dosage: Take 1 tablet daily with food or as recommended by your healthcare professional
  • Always read the label and follow the directions for use. See product warnings below
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#9 Top Pick
Sea Kelp Iodine | 225mcg | 300 Tablets | Non-GMO, Gluten Free | Traditional Herb Supplement | by Carlyle

Sea Kelp Iodine | 225mcg | 300 Tablets | Non-GMO, Gluten Free | Traditional Herb Supplement | by Carlyle

Brand: Carlyle
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  • SEA KELP: Get powerful support from this green seaweed, an excellent source of mineral Iodine
  • MARINE FORMULA: Each tablet delivers 225 mcg of Iodine from Kelp, 150% of your daily value!
  • ROOTED IN WELLNESS: Carlyle provides premium, honest supplements in your pursuit to healthy living
  • CARLYLE MANUFACTURERS: Laboratory Tested, Trusted Ingredients, Superior Quality, 100% Guaranteed!
  • NATURALLY FREE OF: Gluten, Wheat, Artificial Flavor, Artificial Sweetener, Preservatives & Non-GMO
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#10 Top Pick
Herbs of Gold Iodine MAX - 60 Tablets

Herbs of Gold Iodine MAX - 60 Tablets

Brand: Herbs of Gold
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  • Iodine MAX assists thyroid hormone production and supports thyroid gland health. Thyroid hormones are required for normal growth and metabolism. Iodine MAX maintains the body's metabolic rate and supports healthy growth and development. Always read the label & follow the directions for use. Read the warnings below before purchase.
  • Iodine MAX supports healthy foetal development, healthy foetal brain development and a healthy pregnancy.
  • Iodine MAX supports nervous system function.
  • Iodine MAX acts as an antioxidant, reducing free radicals formed in the body.
  • Iodine MAX maintains iodine levels in the body.
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