Best Potassium Iodine Supplements of 2026

Phoebe Cooper Avatar
Phoebe Cooper
Last Updated: 6 Feb 2026

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Potassium iodine supplements are a type of dietary supplement that contain a form of iodine, a mineral that is essential for the proper functioning of the thyroid gland. These supplements are typically taken by individuals who are at risk of iodine deficiency, such as those who follow a vegetarian or vegan diet, or those who live in areas where the soil is low in iodine. Potassium iodine supplements are available in various forms, including tablets, capsules, and liquids, and can be purchased over-the-counter or through a healthcare provider.

At a Glance: Our Top Picks

WeightWorld 400mcg Iodine Tablets - 365 Vegan Cover #TOP 1
WeightWorld 400mcg Iodine Tablets - 365 Vegan
ftb score rating icon 9.9
Max Strength Iodine 150mcg Tablets for Thyroid Health Cover #TOP 2
Max Strength Iodine 150mcg Tablets for Thyroid Health
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NaturesPlus Potassium Iodide Tablets for Health Cover #TOP 3
NaturesPlus Potassium Iodide Tablets for Health
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Top 10 Potassium Iodine Supplements

WeightWorld 400mcg Iodine Tablets - 365 Vegan

5056128126530
Iodine
WeightWorld 400mcg Iodine Tablets - 365 Vegan Cover
Iodine Tablets - 400mcg Potassium Iodide - 365 Vegan Tablets (1 Year Supply) - Non-GMO & Gluten-Free Iodine Supplement - Trace Mineral - Made in The UK

The WeightWorld Iodine Tablets are a high-strength potassium iodide supplement, providing 400mcg of iodine per tablet to help you meet your body's iodine requirements. These tablets support normal thyroid function and contribute to overall wellbeing, including cognitive and nervous system health. With a year's supply in each bottle, you can easily incorporate them into your daily routine. Being vegan, non-GMO, and gluten-free, these tablets offer a convenient alternative to traditional liquid iodine supplements.

What We Like
High-strength 400mcg iodine
One-a-day for easy use
Vegan and gluten-free
365 tablets for a year

Max Strength Iodine 150mcg Tablets for Thyroid Health

Max Strength Iodine 150mcg Tablets for Thyroid Health Cover
Iodine 150mcg 120 Tablets | Max Strength Potassium Iodide | Natural Source of Iodine from Potassium Iodide | Thyroid Supplement | Vegan UK Made | GMP Approved

Max Strength Iodine 150mcg Tablets are an excellent choice for those seeking a high-strength iodine supplement. Each tablet delivers 150μg of iodine from potassium iodide, supporting normal thyroid function and hormone production essential for growth and development. With 120 tablets in each pack, you enjoy long-lasting value, lasting up to four months. The compact, letterbox-friendly packaging is convenient for storage and travel, while the small and easy-to-swallow tablets ensure that everyone can benefit from this vital nutrient. Plus, they are vegan-friendly and free from common allergens.

What We Like
High strength iodine content
Long-lasting supply
Easy to swallow
Vegan and allergen-free

NaturesPlus Potassium Iodide Tablets for Health

097467033719
1 count (Pack of 1)
NaturesPlus Potassium Iodide Tablets for Health Cover
NaturesPlus Potassium Iodide 150 mcg - Iodine Tablets - Metabolism, Cognitive Functions, Skin, Energy - Vegetarian, Gluten Free - 100 Tablets

NaturesPlus Iodine Tablets provide an optimal dose of 150 mcg of potassium iodide, ensuring you receive 100% of the recommended daily intake in just one easy-to-swallow tablet. This convenient supplement supports your metabolism, cognitive function, and energy levels, helping you maintain an active lifestyle. Additionally, it promotes skin health, making it a well-rounded addition to your daily routine. Being gluten-free and vegetarian, it caters to a variety of dietary needs without compromising on quality.

What We Like
Easy to swallow
Supports metabolism and energy
Promotes skin health
Gluten-free and vegetarian
High-quality manufacturing standards
#TOP 4

Horbaach High Strength Iodine Supplement 500mcg

HU45782
Horbaach High Strength Iodine Supplement 500mcg Cover
Iodine Supplement 500mcg | 400 Vegan Tablets (1+ Year Supply) | High Strength Potassium Iodide | by Horbaach

Horbaach Iodine Tablets offer a robust dose of 500µg of Iodine as Potassium Iodide, providing you with high strength support for your health needs. This expertly crafted formula ensures purity and potency, making it a reliable choice. You can enjoy the convenience of taking just two tablets daily, eliminating the hassle of monthly re-orders for three months of support. Additionally, these vegan tablets contain no artificial colours or preservatives, making them suitable for all adult men and women.

What We Like
High strength dosage
Convenient three-month supply
Vegan and additive-free
Expertly crafted formula
Produced to high quality standards

Bandini® Iodine and Selenium Tablets

BANDINI
Iodio+selenio
Bandini® Iodine and Selenium Tablets Cover
Bandini® Iodine 225 mcg + Selenium 100 mcg - 160 Tablets - High Absorption and Dosage - Dietary Supplement of Potassium Iodide KI + Selenium Methionine - Vegan, Non-GMO - Made in Italy

Bandini® Iodine Tablets are a high-dose dietary supplement featuring 225 mcg of iodine and 100 mcg of selenium per two tablets. This combination supports normal cognitive function, energy metabolism, and nervous system performance, making it beneficial for your overall wellbeing. The small, easy-to-swallow tablets ensure convenience, allowing you to take them with water or any beverage of your choice. Furthermore, these tablets are made from selected vegan ingredients, ensuring they are free from GMOs and artificial additives.

What We Like
High dosage of iodine and selenium
Vegan and GMO-free formula
Easy-to-swallow tablets
Supports cognitive and immune function
#TOP 6

New Leaf Vegan Iodine Tablets for Thyroid Health

New Leaf Vegan Iodine Tablets for Thyroid Health Cover
Iodine Tablets 100% RI - Vegan High Strength 180 Tablets Iodine Supplements, Natural Source of Iodine from Potassium Iodide, 6 Month Supply, GMO Free, Made in UK by New Leaf

New Leaf Iodine Tablets are designed to support your thyroid health, which is vital for maintaining a healthy metabolism. Each tablet provides 150 mcg of potassium iodide, ensuring you meet your daily iodine needs effectively. This supplement also contributes to the normal functioning of your nervous system, helping you feel more balanced and alert. Furthermore, it supports cognitive function, which may enhance your memory and focus. With a six-month supply in each bottle, this product offers long-lasting support for your overall well-being.

What We Like
Supports thyroid function
Enhances cognitive performance
Vegan-friendly ingredients
High potency with six-month supply
Quality tested for safety

Iodine 150mcg Tablets for Thyroid Health

Iodine 150mcg Tablets for Thyroid Health Cover
Iodine 150mcg 120 Tablets | High Strength Natural Source of Iodine from Potassium Iodide | Pregnancy Health & Thyroid Supplement | Vegan | UK Made | Fmax5 Supps

The Iodine Tablets by formula max5 nutrition are designed to support your thyroid health, which is crucial for producing hormones that aid in growth and development. Additionally, these tablets promote the normal functioning of your nervous system and help maintain healthy skin. With a high potency of 150mcg in just one easy-to-swallow tablet per day, you can conveniently access these significant health benefits. Plus, they are vegan-friendly and made in the UK, ensuring a sustainable choice for your dietary needs.

What We Like
Supports thyroid hormone production
Promotes nervous system function
One tablet daily convenience
Vegan-friendly formulation

Iodine Supplement 400mcg - 400 Vegan Tablets

SS Sport Supplies
Iodine - 400mcg - 400t
Iodine Supplement 400mcg - 400 Vegan Tablets Cover
Iodine Supplement 400mcg (Over 1 Year Supply) - 400 Vegan Tablets - High Strength Natural Source of Iodine from Potassium Iodide - UK Made

The Iodine Supplement 400mcg offers a high-strength source of potassium iodide, providing you with 400mcg per tablet. With a generous supply of 400 tablets, you can easily support your thyroid health, nervous system, and cognitive function over the course of a year. These vegan and non-GMO tablets are a convenient alternative to messy liquid drops, ensuring you get your iodine in a simple format. Manufactured to high standards, these tablets are lab-tested and free from gluten, making them a reliable choice for your health needs.

What We Like
High strength potassium iodide
Over 1-year supply
Vegan and non-GMO
Convenient tablet form
Lab-tested quality

Pure Encapsulations Iodine Supplement 225 UG

Pure Encapsulations Iodine Supplement 225 UG Cover
Pure Encapsulations Iodine (Potassium Iodide) 225 UG - Hypoallergenic Supplement Supports Metabolism, Healthy Skin and Thyroid Function - 60 Vegetarian Capsules

This Pure Encapsulations Iodine supplement provides 225 micrograms of iodine per vegetarian capsule, aiding in optimal iodine intake for your diet. Iodine is essential for maintaining normal cognitive function and supporting your nervous system. Additionally, it contributes to energy-yielding metabolism and skin health, helping you feel revitalised. It also plays a crucial role in the production of thyroid hormones, ensuring your thyroid functions normally. You only need to take one capsule daily with a meal for the best results.

What We Like
Supports cognitive function
Boosts energy metabolism
Promotes healthy skin
Maintains thyroid function
Vegetarian-friendly capsules
#TOP 10

InfiniVit Iodide 12.5mg High Strength Iodine Tablets

InfiniVit
Yellow
InfiniVit Iodide 12.5mg High Strength Iodine Tablets Cover
InfiniVit Iodide 12.5mg – High Strength Iodine & Potassium Iodide Tablets | Lugol’s Formula | 90 Vegan Tablets | Non-GMO Iodine Supplement | Trace Mineral

The InfiniVit Iodide Tablets provide a high strength 12.5mg dose of iodine and potassium iodide in each tablet, making it ideal for those needing a stronger iodine supplement. This product offers a convenient tablet form of Lugol's iodine, avoiding the taste and mess of liquid drops while ensuring consistent dosing for your ease. It supports normal thyroid function by aiding the production of thyroid hormones, which is essential for your overall health. With 90 tablets per bottle, you get a long-lasting three-month supply, perfect for daily use without frequent reordering.

What We Like
High strength iodine dose
Tablet form, no taste
Supports thyroid function
Long-lasting 90 tablets supply
Buying Guide Image
Editor's Notes

During our potassium iodine supplement research, we found 101 potassium iodine supplement products and shortlisted 10 quality products. We collected and analyzed 13,819 customer reviews through our big data system to write the potassium iodine supplements list. We found that most customers choose potassium iodine supplements with an average price of £11.54.

The potassium iodine supplements are available for purchase. We have researched hundreds of brands and picked the top brands of potassium iodine supplements, including WeightWorld, Right Choice Supplements, Nature's Plus, BANDINI, NEW LEAF PRODUCTS.

Written by
Phoebe Cooper Avatar

In 2000, Phoebe Cooper graduated from the University of London as a Pharmacist. She practiced as a Pharmacist for the better part of 2 decades. Phoebe says she has worked in the majority of health sectors and has sufficient accumulated knowledge and experience. In her practice, Phoebe published a series of eBooks, one of which is titled "Good Health Good Living."