10 Best Iodine Supplements 2026 in the United States

This Organic Iodine Supplement delivers a strong 1500 mcg dose of iodine per capsule, which is a higher potency suitable for those looking to support thyroid health. Its iodine comes from natural sea vegetables like Icelandic sea kelp, Irish moss, and bladderwrack, providing whole food sources rather than synthetic iodine. The capsules are easy to swallow and free from artificial colors or flavors, making it a clean option for daily use.

With 60 capsules in the bottle, it offers a two-month supply if taken once daily. The brand, Triquetra Health, is known for focusing on natural health products, adding a level of trust in quality and purity. However, the supplement doesn’t specify any third-party testing results for purity, so if extra assurance on heavy metals or contaminants is desired, further verification might be needed.

The 1500 mcg dose is beneficial for some, but it could be too high for others who require lower iodine levels, so consulting a healthcare provider before use is recommended. This supplement is well-suited for people seeking a natural, potent iodine source from sea vegetables and who prefer capsules without added artificial ingredients.

The Organic Lugol's Iodine 2% Solution by Earth Harmony Naturals is a liquid iodine supplement designed to support thyroid health, metabolism, and cognitive function. This product contains both iodine and potassium iodide, delivering 3000 mcg per serving, which is effective for maintaining proper thyroid function. The liquid drop form makes it easy to adjust dosage and is suitable for those who have difficulty swallowing pills.

Additionally, the product is non-GMO, vegan-friendly, and free from common allergens and artificial additives, ensuring high purity and quality. Produced in a cGMP facility, it adheres to high manufacturing standards, adding to its credibility. The unflavored nature might be off-putting for some users, and the bottle size (2 oz) requires careful handling to avoid spillage.

This supplement is ideal for individuals looking to improve thyroid health, support metabolism, and enhance cognitive function with a clean, high-quality iodine source.

Pure Encapsulations Thyroid Support Complex is a well-rounded iodine supplement designed to support thyroid health. It combines iodine with l-tyrosine and ashwagandha to help with hormone function, and includes additional vitamins and minerals like vitamin A, C, selenium, and turmeric for antioxidant benefits. These components suggest a comprehensive approach to thyroid health, which can be beneficial for those looking to support their thyroid function naturally.

The supplement is non-GMO and vegetarian, making it suitable for many dietary preferences. The dosage is straightforward, with a suggestion of taking two capsules daily with a meal, providing ease of use for consistent supplementation. However, the emphasis on additional ingredients like ashwagandha and turmeric might not be necessary for everyone, and those looking solely for iodine might find this blend more complex than required.

The brand, Pure Encapsulations, is known for its high-quality, allergen-free products, which adds credibility and trust in the product's purity and quality. Each bottle contains 120 capsules, sufficient for a two-month supply, making it a convenient option for long-term use. The capsule form is easy to take but might not be ideal for those who have difficulty swallowing pills. This supplement is best suited for adults looking for a comprehensive thyroid support solution, with the added benefits of antioxidants and hormone function support.