Best Soy-Free Iodine Supplements of 2026

Phoebe Cooper Avatar
Phoebe Cooper
Last Updated: 6 Feb 2026

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For individuals with soy allergies or intolerances, finding iodine supplements that are free from soy can be a challenge. However, there are several soy-free iodine supplements available on the market that can provide the necessary daily dose of iodine without causing an allergic reaction. These supplements come in various forms, including tablets, capsules, and liquid drops, and can be taken to support thyroid function, boost energy levels, and improve overall health. If you are looking for a soy-free iodine supplement, it is advisable to consult with a healthcare professional to determine the appropriate dosage and to ensure that it is safe to take with any other medications or supplements you may be using.

At a Glance: Our Top Picks

MaryRuth Organics Iodine Liquid Drops 30ml Cover #TOP 1
MaryRuth Organics Iodine Liquid Drops 30ml
ftb score rating icon 9.8
Organic Seaweed Iodine Supplement by Together Health Cover #TOP 2
Organic Seaweed Iodine Supplement by Together Health
ftb score rating icon 9.7
Now Foods Kelp Capsules with Iodine Cover #TOP 3
Now Foods Kelp Capsules with Iodine
ftb score rating icon 9.5

Top 10 Soy-Free Iodine Supplements

MaryRuth Organics Iodine Liquid Drops 30ml

0856645008167
No Color
30 ml (Pack of 1)
MaryRuth Organics Iodine Liquid Drops 30ml Cover
MaryRuth Organics, Iodine Liquid Drops, Dietary Supplement, Unflavored, 30ml, Vegan, Gluten-Free, Soy-Free

MaryRuth Iodine Drops offer a high dosage of 125mcg of iodine in just one drop, helping you meet your daily requirements effortlessly. With good bioavailability, these drops ensure that your body can absorb the iodine effectively, making them suitable for a vegan diet. The quality of the product is assured, as it is tested in independent laboratories for purity. Additionally, the drops are free from gluten and unwanted additives, allowing you to supplement your diet without concerns about genetic engineering.

What We Like
High dosage of iodine
Good absorption
Tested for quality
Additive-free

Organic Seaweed Iodine Supplement by Together Health

700132
Organic Seaweed Iodine Supplement by Together Health Cover
Organic Seaweed Iodine Supplement – Together Health – from Organic Seaweed – Natural Source of Iodine – Vegan Friendly – Made in The UK – 30 Vegecaps

The Together Seaweed Iodine supplement is crafted from 100% sustainably wild-harvested ascophyllum seaweed, ensuring a natural source of iodine. Packed with essential minerals and micronutrients, it aids in the metabolism of iodine, which is vital for your thyroid health and cognitive function. This supplement helps prevent iodine deficiency, promoting overall well-being. Additionally, it is free from artificial additives, giving you a pure and effective product that your body can easily absorb.

What We Like
Organic and natural ingredients
Supports thyroid health
Rich in essential nutrients
Free from allergens and additives
#TOP 3

Now Foods Kelp Capsules with Iodine

NOW
NOW-5280
Now Foods Kelp Capsules with Iodine Cover
Now Foods, Kelp, with Natural Iodine, High Dose, 1 Capsule Every 3 Days, 250 Vegan Capsules, Lab Tested, Gluten Free, Soy Free, Non GMO, Vegetarian

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.

What We Like
High dosage for convenience
Good bioavailability
Gluten-free and vegan-friendly
Quality tested for purity

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

Vegavero Organic Iodine Supplement with Sea Kelp

VV-VITA-116
Vegavero Organic Iodine Supplement with Sea Kelp Cover
Vegavero Organic Iodine Supplement | NO Additives | 100% Natural Organic Scottish Sea Kelp | 150 mcg Pure | 180 Tablets | Vegan

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.

What We Like
Supports thyroid function
Made from organic sea kelp
150μg of natural iodine
Additive-free and vegan
#TOP 7

Optimox Iodoral 12.5mg Vegan Tablets

OXC-0011-UK
60 g (Pack of 1)
Optimox Iodoral 12.5mg Vegan Tablets Cover
Optimox, Iodoral 12,5mg, with Iodine and Potassium Iodide, Depot, 180 Vegan Tablets, Vegetarian, Gluten-Free, Soy-Free, Non-GMO

Optimox Iodoral Tablets provide a high-strength dose of 12.5mg of iodine and iodide in just one tablet every 125 days, offering great convenience. Their good bioavailability means you can easily absorb the nutrients, making them suitable for those following a vegan diet. Quality is assured as these tablets are tested for purity in independent laboratories, ensuring you receive a reliable product. Additionally, they contain no unwanted additives, being gluten-free and non-GMO, which is ideal for health-conscious consumers.

What We Like
High-strength dosage
Easy absorption
Quality tested
Gluten-free and non-GMO
#TOP 8

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

Seagreens Iodine+ Seaweed Food Supplement Capsules

Seagreens
SGIC60
Green
Seagreens Iodine+ Seaweed Food Supplement Capsules Cover
Seagreens Iodine+ Organic Seaweed Supplement, 2 Month Supply, 390mcg Natural Iodine from Seaweed, Vegan, Plant-Based, Thyroid & Radiation Support, 60 Capsules

Seagreens Iodine+ Capsules offer high-quality seaweed that provides naturally occurring iodine in a whole food form. Being 100% pure and vegan, these capsules are free from additives, fillers, allergens, and GMO, ensuring a safe supplement for your diet. The rich nutrient source is easily absorbed by your body, promoting overall health. These capsules are suitable for adults, the elderly, vegans, vegetarians, and even children at a half dose, making them a versatile addition to your daily nutrition routine.

What We Like
High-quality, pure seaweed
Vegan and allergen-free
Easy to absorb nutrients
Suitable for all ages
Convenient daily use
#TOP 10

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
Buying Guide Image
Editor's Notes

During our soy-free iodine supplement research, we found 29 soy-free iodine supplement products and shortlisted 10 quality products. We collected and analyzed 67,260 customer reviews through our big data system to write the soy-free iodine supplements list. We found that most customers choose soy-free iodine supplements with an average price of £12.49.

The soy-free iodine supplements are available for purchase. We have researched hundreds of brands and picked the top brands of soy-free iodine supplements, including MaryRuth Organics, Together, NOW, WeightWorld, Right Choice Supplements.

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."