Best Natural Iodine Supplements of 2025

Get your daily dose of iodine with NOW Supplements Kelp, a brown algae that grows in the colder waters of the world's oceans. This super green contains 150mcg of natural iodine that supports healthy thyroid function, an essential nutrient that has been used for centuries in Chinese, Japanese, and Korean cuisines. NOW Supplements Kelp comes in a tablet form that is easier to swallow, and every aspect of the manufacturing process is GMP Quality Assured.

LifeExtension Sea-Iodine Capsules is a natural iodine supplement that supports healthy iodine levels by using ingredients harvested from a blend of organic marine algae. It is bioavailable and essential for thyroid and adrenal health support. This supplement is non-GMO and vegetarian, and does not require upping salt intake to maintain optimal iodine levels. The small capsules are easy to swallow, making it a convenient addition to your daily routine.

MaryRuth's Iodine Liquid Drops is a USDA organic, vegan, and easy-to-take Iodine supplement that comes in liquid drops. The liquid drops are an excellent alternative to hard-to-swallow pills or capsules. The suggested serving contains more than the recommended daily value for adults, and the bottle comes with 450 servings. Iodine is essential for thyroid health, which regulates hormone production, plays an important role in metabolism, stimulates the immune system, and moderates the central nervous system. It is especially important for pregnant and nursing women and those on a vegan or vegetarian diet who are at risk of iodine deficiency.

Terry Naturally Tri-Iodine Capsules provide three beneficial forms of iodine to nourish multiple body systems. It supports hormone balance, menopause relief, healthy detoxification, and cellular defense against oxidative stress. This formula supplies the crucial support you need for breast, uterine, prostate, and colon health. It contains potassium iodide and sodium iodide to support immune health and hormone balance, while molecular iodide promotes breast, prostate, colon, and cellular health.

The Nutricost Iodine Supplement provides 325mcg of natural iodine sourced from sea kelp in each of its 240 easy-to-swallow tablets. It is a non-GMO, gluten-free and vegetarian-friendly product that is manufactured in a GMP compliant facility. This iodine supplement is ideal for individuals who need iodine supplementation to support thyroid function, hormone balance, and other bodily processes.

Tri-Iodine is a supplement designed to support hormone balance, promote breast and prostate health, and provide detoxification and cellular defense against oxidative stress. It supplies three forms of iodine to nourish multiple body systems and combat iodine blockers like chlorine, bromide, and fluoride. Terry Naturally products are manufactured with the highest quality ingredients and meet strict Good Manufacturing Practices standards.

Terry Naturally Tri-Iodine is a non-GMO and gluten-free supplement that supports strong cellular defense, hormone balance, and promotes breast, prostate, and colon health. The formula provides three beneficial forms of iodine to nourish multiple body systems. Every cell in your body requires iodine to keep it functioning properly, but daily exposure to iodine blockers like chlorine, bromide, and fluoride can hinder its benefits. With Tri-Iodine, you'll get the support you need for healthy detoxification, menopause relief, and cellular defense against oxidative stress.

Global Healing Detoxadine is a non-GMO, vegan-friendly iodine supplement designed to provide thyroid support, consistent metabolism and energy, normal focus and sleep. The highly absorbable liquid formula is loaded with a gentle flavor of 650mcg of iodine and is set in a solution of certified organic vegetable glycerin. The supplement is manufactured in a state-of-the-art cGMP certified facility in the USA.

NOW Kelp Iodine Tablets offer a natural source of iodine, essential for maintaining a healthy metabolism. Each tablet provides a convenient serving size, making it easy for you to incorporate it into your daily routine. With 200 tablets per container, you can enjoy long-lasting support for your thyroid health. This green superfood not only helps in regulating your body's energy levels but also contributes to overall well-being. By choosing this supplement, you can ensure you’re getting the iodine your body needs in a simple and effective way.

Dr. Berg Sea Kelp Iodine offers a daily dose of 200 mcg of high-quality iodine, essential for supporting your thyroid health. This supplement blends sea kelp and algae sourced from Iceland’s pristine waters, ensuring you receive premium ingredients. Manufactured in GMP-certified facilities in the U.S., you can trust its cleanliness and quality. Dr. Berg’s extensive research into natural health solutions makes this product unique, providing blends that you won’t find elsewhere. With a 30-day satisfaction guarantee, you can try it risk-free and see the benefits for yourself.