Best Kelp Iodine Supplements of 2025

Earthier Iodine Capsules are a certified organic supplement sourced from seaweed harvested in the United Kingdom. These capsules provide a natural source of iodine, which is essential for normal cognitive function and energy metabolism. By supporting the functioning of the nervous system, they help you maintain mental clarity and overall well-being. Additionally, they contribute to the normal production of thyroid hormones, promoting a healthy thyroid function, which is vital for regulating various bodily processes.

Vitality Bioresearch Kelp Tablets provide a stable iodine source, thanks to their unique low-pressure technology used in a temperature-controlled UK lab. This method preserves essential nutrients without requiring high dosages. The potent slow-release formula ensures that iodine is released gradually, which is beneficial for your body’s absorption. Each batch is rigorously tested for purity and consistency, ensuring freedom from heavy metals. Additionally, the sustainable wild kelp is responsibly sourced from Scotland’s Outer Hebrides, supporting both your health and environmental sustainability.

The Vegavero Iodine Supplement is designed to support your thyroid health, as iodine is essential for proper thyroid function and hormone production. Made from natural organic Scottish sea kelp, these capsules offer a rich source of iodine that is easily absorbed by your body. Each capsule provides 150μg of iodine, making it suitable for both men and women. Additionally, this supplement is free from additives and pesticides, ensuring you receive a pure product that aligns with your vegan lifestyle.

Health4All Sea Kelp Iodine offers a natural source of iodine, essential for maintaining a healthy metabolism and thyroid function. Each capsule contains 520mcg of iodine derived from pure Sea Kelp, ensuring you receive the exact amount needed for optimal health. The capsules are made from vegetable cellulose, making them suitable for both vegetarians and vegans. Additionally, they are manufactured in the UK under strict GMP standards, providing peace of mind regarding quality and safety.

Health4All Iodine Tablets are designed for children over three years old, providing 75µg of easily absorbable iodine from natural sea kelp extract. Iodine is essential for normal cognitive function, supporting your child’s learning and growth. These tablets promote energy metabolism and nervous system function, ensuring your child remains active and healthy. They can be taken as a sublingual tablet or chewed, making it convenient for your child to enjoy the natural orange flavour while getting their daily iodine requirement.

The Ezyleaf Iodine Supplement provides a valuable daily intake of essential nutrients. Each capsule contains beneficial ingredients like Sea Kelp, Irish Sea Moss, Bladderwrack, and Potassium Iodide, ensuring you receive a nutrient-rich source of iodine. With 90 vegan capsules in each bottle, you enjoy a three-month supply, making it a convenient choice for maintaining your health. This supplement is also gluten and dairy free, catering to various dietary preferences, so you can feel confident in your choice.

Now Foods Kelp is a high-dosage iodine supplement that provides 325mcg of iodine in just one capsule taken every three days. This convenient dosing schedule makes it easy for you to maintain your iodine levels without the need for daily supplements. The capsules are designed with good bioavailability, ensuring that your body can easily absorb the nutrients. Additionally, they are gluten-free and made without any unwanted additives, making them suitable for a vegan diet. Quality is assured, as the capsules are tested for purity by independent laboratories.

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.

Naturally Natural Iodine offers a potent source of iodine from sea kelp, with each capsule containing a precise 520mcg. This product is formulated without any bulking agents, ensuring you receive the purest form of supplementation. The premium quality materials used are pharmaceutical grade and free from GMOs and allergens, making it suitable for various dietary needs, including vegan and halal. For those who struggle with swallowing pills, the capsules can be opened and mixed with your favourite drink for easy consumption.

The Nature Provides Iodine supplement offers a unique blend of iodine derived from sea kelp and ammonium iodide, ensuring excellent absorption for your body. With just three drops, you receive a potent dose of 675mcg, making it easy to incorporate into your daily routine. Its sweet, medicinal flavour allows you to mix it with water or juice, enhancing your experience. This formula supports thyroid health, metabolism, and hormone balance, contributing to overall well-being and energy levels.