10 Best iodine supplement (2025)

10 Best iodine supplements (2025) offer a range of options for those seeking to enhance their iodine intake for optimal thyroid function and overall health. These supplements vary in form, including capsules, liquid drops, and gummies, catering to different preferences. Top contenders feature high-quality ingredients, bioavailability, and third-party testing for purity. Brands like MaryRuth Organics, Garden of Life, and NOW Foods consistently receive positive reviews for their effectiveness and safety. Whether you're looking to support your metabolism or boost your immune system, these iodine supplements provide reliable solutions to meet your nutritional needs.

SaleBestseller No. 1

Organic Lugol's Iodine, Iodine and Potassium Iodide 2% Solution 3000 mcg - Liquid Supplement Drops for Thyroid Support for Women & Men, Metabolism Health, Detox Boost - Non-GMO, 395 Servings (2 Oz)

Helps Reduce Thyroid Vascularity - This is used to help reduce loss in blood in the thyroid gland and helps with any other complications that you can prepare for. Our 2 percent solution is perfect to help monitor healthy hormone levels.
Consistent Metabolism & Energy - A healthy thyroid helps keep our metabolism stable & well-adjusted to maintain healthy weight. Our non-gmo, vegan-friendly product assists with regular thyroid function to maintain energy levels for longer.
Cognitive Function Support - Clear out brain fog and maintain the concentration & focus you need to thrive at work or anywhere you may go. Keeping your iodine levels intact supports a healthy endocrine system that prompts proper brain development.
Highest Quality- Our vegan-friendly formula is also free of gluten, soy, dairy, GMOs, nuts, sugar, artificial flavors, synthetic dyes, and toxic fillers. Produced in an Earth-friendly, cGMP facility with only the highest quality ingredients.
We Know You'll Love It - We pride ourselves on the quality of our ingredients and we just know you'll love your results! We're here to help you make the choice for a healthier lifestyle.

SaleBestseller No. 2

Life Extension Sea-Iodine™, kelp and bladderwrack-derived iodine, supports healthy levels of this essential nutrient for thyroid health and beyond, non-GMO, gluten-free, vegetarian, 60 capsules

Iodine for thyroid health – A healthy thyroid is an essential part of whole-body health. It acts as the body’s thermostat, helps maintain metabolism and supports fat burning for energy. Iodine supports the production of the important hormones T3 and T4.
Supports healthy iodine levels without salt – Most people consume iodine through their intake of table salt. But many health-conscious individuals avoid eating excess table salt. Supplementary iodine can supply the iodine you need without salt.
Convenient option to get daily iodine – It’s difficult for most people to get enough iodine in their daily diets. A supplement can help ensure you’re meeting the daily recommended intake of iodine (150 mcg) to support your health.
Ingredients matter – We use only the finest raw ingredients with the quality and purity you deserve. The majority of our products are non-GMO, gluten-free and manufactured in the USA—and a Certificate of Analysis is available for every one.     
Live your healthiest life – We believe the answers to a healthier life are within reach, and that scientific research is the key to getting us there. That’s why so many of our formulas feature specific ingredients and amounts based on scientific studies.

Bestseller No. 3

Pure Encapsulations Iodine - Supplement to Support The Thyroid & Help Maintain Healthy Cellular Metabolism - with Premium Potassium Iodide - 120 Capsules

Thyroid Support: Pure iodine capsules for premium thyroid gland health support; helps to maintain healthy cellular metabolism
Hormone Support: Iodine supplement helps support the formation of thyroid hormones for optimal hormone balance; iodine is absorbed by thyroid gland
Metabolism Support: Iodine for thyroid health supports also supports all cells; supports cell energy activity in tissues and organs
Pure Quality: Our supplements are made with premium ingredients sourced from trusted suppliers and guided by nutritional experts, then manufactured and tested to verify potency and purity
Pure Difference: What we leave out matters, too; Pure Encapsulations products are FREE FROM common allergens, artificial or unnecessary ingredients, and GMOs

Bestseller No. 4

J.CROW'S® Lugol's Solution of Iodine 2% 2 oz (3 Bottles)

PREMIUM IODINE SOLUTION: J.CROW'S Lugol's Solution is a 2% iodine and potassium iodide solution derived from 320-million-year-old natural brine deposits in the Western USA, offering a unique and high-quality iodine source. A traditional chemical mixture in use since 1829.

Bestseller No. 5

Organic Iodine Supplement from Sea Vegetable Complex, Whole Food & Raw Form - Iodine Plus Trace Mineral Complex – Contains Purest Icelandic Sea Kelp, Irish Moss & Bladderwrack (250 mcg)

ORGANIC IODINE - WHOLE FOOD & RAW FORM | Plant Iodine is an iodine supplement that is 100% organic iodine that is delivered in whole food and raw form.
ORGANIC SEA VEGETABLE COMPLEX | Plant Iodine is a synergetic sea vegetable complex that combines Organic Kelp, Organic Irish Moss and Organic Bladderwrack.
DERIVED FROM PUREST, GEOTHERMAL ICELANDIC SEAWEED | Our Kelp is grown in Northwest Iceland off the coast of the Fjords and within the Arctic circle. The water off the Fjords is richly mineralized by Icelands glaciers and the geothermal vents on the ocean floor. It is the purest ocean water in the world.
NATURALLY OCCURRING SEA-MINERAL COMPLEX | Our sea vegetable complex is packed with a host of minerals, vitamins, amino acids and polysaccharides. This nutrient complex works synergistically with the Iodine as well as provides a host of their own health benefits.
ESSENTIAL MINERAL WITH BROAD RANGE OF HEALTH BENEFITS | Iodine deficiency leads to problems such as extreme fatigue, weight gain and dry or brittle hair, skin and nails. Iodine also plays a crucial role in thyroid function, metabolism and hormone regulation. Iodine also plays a role in immune response and the central nervous system.*

Bestseller No. 6

Essential Mineral Iodine: This bottle will last you - a little goes a long way. With only 2 drops per serving, you’ll receive 450 servings! The body doesn’t naturally produce iodine, so it is an essential part of any diet. Iodine deficiencies can lead to feeling fatigued and weak, dry and brittle hair, skin, and nails, and weight gain.
Prenatal Iodine: At particular risk for iodine deficiency are those on a vegan or vegetarian diet, or those pregnant and nursing. Iodine is crucial during pregnancy, when the body requires greater amounts of iodine to support the developing fetus.
Thryroid Health: This trace element is especially important for thyroid health, which regulates hormone production, which in turn plays an important role in metabolism. Support your body with this essential micronutrient!
Vegan Formula: 250 mcg Iodine (as Potassium Iodide). Other Ingredients: Organic Vegetable Glycerin and Purified Water. The suggested serving of our Iodine Liquid Drops contains more than the recommended daily value for adults, except for those lactating. An individual’s iodine needs are impacted by diet. Consult with a healthcare professional to determine if supplementing iodine intake is the right choice for you!
For Most Lifestyles: Iodine Liquid Drops by MaryRuth's are USDA Organic, Non-GMO, Vegan, Dairy Free, Nut Free, Gluten Free, Soy Free. No Added Sugar, No Artificial Colors. Made in a GMP Facility. Clean Label Project Certified. B Corp Certified.

Bestseller No. 7

Optimox Iodoral 12.5mg Supplement – Iodine for Thyroid Support, Potassium Iodide Tablets, Lugol Solution, Daily Vitamins & Minerals - 90 Count

SUPPORT THYROID FUNCTION - Iodine is an essential element. It primarily supports the thyroid gland and energy levels, but other organs in the body have a need for iodine in order to function normally*
IODINE FOR PROTECTION - Iodine tablets support the central nervous system, as well as normal bone and nerve growth.*
STRONG HAIR SKIN & NAILS - Iodine deficiencies can lead to dry and brittle hair, skin, and nails, so support your body with our essential potassium iodide tablets*
IODINE, AN ESSENTIAL ELEMENT - We packed 5 mg of Iodine and 7.5 mg of Iodide (Potassium Salt) to create iodine pills free of wheat, gluten, corn, soy, yeast, dairy, eggs, fish, shellfish and peanuts
THE ORIGINAL HIGH-POTENCY IODINE SUPPLEMENT - Iodoral is a precisely quantified tablet form of Lugol solution containing iodine and iodide as the potassium salt.

SaleBestseller No. 8

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

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

SaleBestseller No. 9

NOW Supplements, Kelp 325 mcg of Natural Iodine, Supports Healthy Thyroid Function*, Super Green, 250 Veg Capsules

SUPER GREENS/325 mcg OF NATURAL IODINE: NOW Kelp delivers the natural nutrient profile found in Genuine Whole Foods. Take 1 capsule daily with a meal.
Product Note: Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product delivery
SUPPORTS HEALTHY THYROID FUNCTION*: Kelp is an excellent source of iodine, which has been shown to be essential for healthy thyroid function.*
CLASSIFICATIONS/CERTIFICATIONS: Non-GMO, Kosher, Dairy Free, Egg Free, Nut Free, Soy Free, Vegan/Vegetarian
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).

SaleBestseller No. 10

NOW Foods Supplements, Kelp 150 mcg of Natural Iodine, Easier to Swallow Tablet, Super Green, 200 Tablets

150 mcg OF NATURAL IODINE: Kelp is a large, leafy seaweed belonging to the brown algae family that grows in "forests" in the colder waters of the world's oceans.
SUPPORTS HEALTHY THYROID FUNCTION*: Excellent source of iodine, which has been shown to be essential for healthy thyroid function.*
EASIER TO SWALLOW TABLETS: Kelp has been used for centuries as an important nutritious staple ingredient in Chinese, Japanese, and Korean cuisines.
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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