Best Gluten-Free Kelp Supplements of 2025

Phoebe Cooper Avatar
Phoebe Cooper
Last Updated: 10 Feb 2025

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Gluten-free kelp supplements are a natural and nutritious way to support your body's health. Kelp is a type of seaweed that is rich in vitamins and minerals, including iodine, calcium, and iron. These supplements are designed to provide a convenient and easy way to incorporate kelp into your diet, without the need to consume large amounts of seaweed. Kelp supplements are suitable for anyone looking to boost their nutrient intake, particularly those who follow a gluten-free diet. They are also a great option for vegans and vegetarians who may struggle to obtain certain nutrients from their diet.

At a Glance: Our Top Picks

NaturesPlus Icelandic Kelp Natural Iodine Supplement Cover #TOP 1
NaturesPlus Icelandic Kelp Natural Iodine Supplement
ftb score rating icon 9.8
Organic Sea Kelp Capsules for Wellness Cover #TOP 2
Organic Sea Kelp Capsules for Wellness
ftb score rating icon 9.7
Now Foods Kelp Tablets with Natural Iodine Cover #TOP 3
Now Foods Kelp Tablets with Natural Iodine
ftb score rating icon 9.5

Top 10 Gluten-Free Kelp Supplements

NaturesPlus Icelandic Kelp Natural Iodine Supplement

NaturesPlus Icelandic Kelp Natural Iodine Supplement Cover
NaturesPlus Icelandic Kelp - Natural Iodine Supplement from Kelp, Easy One A Day - Vegetarian, Gluten Free - 300 Tablets

NaturesPlus Kelp is a powerful oceanic superfood derived from premium Nova Scotia and Pacific Kelp. Each tablet provides 150 mcg of natural iodine, essential for thyroid hormone production, which can help boost your metabolic rate and energy levels. Additionally, the chlorophyll in kelp offers antioxidant properties, promoting overall health. With a commitment to purity, this supplement is free from artificial ingredients and is suitable for vegetarians and those with gluten sensitivities, ensuring you can focus on your wellbeing without worry.

What We Like
Natural source of iodine
Rich in antioxidants
Vegetarian and gluten-free
300 servings per bottle
#TOP 2

Organic Sea Kelp Capsules for Wellness

BIRCH & WILDE
Organic Sea Kelp Capsules for Wellness Cover
Organic Sea Kelp Capsules with Iodine - Vegan Sea Kelp for Hair, Skin, Nails, Cognitive Process & Thyroid Support - Soy, Sugar, Gluten Free & Lactose Free Supplements - 60 Count Refill, Birch & Wilde

Birch & Wilde Kelp Capsules are designed to enhance your beauty from within. These iodine-rich supplements moisturise and nourish your skin, hair, and nails, helping you look revitalised throughout the day. They also support your thyroid function, ensuring hormone production remains balanced, which is crucial for overall health. Additionally, the B-vitamins in these capsules can help maintain your energy levels, while potentially preventing brain fog, so you can stay focused and sharp all day long.

What We Like
Promotes healthy skin, hair, nails
Supports thyroid function
Boosts energy levels
Helps improve focus and memory
#TOP 3

Now Foods Kelp Tablets with Natural Iodine

NOW
NOW-0300
Now Foods Kelp Tablets with Natural Iodine Cover
Now Foods, Kelp (Seaweed), 150mcg, 200 Tablets, Lab-Tested, Natural Iodine, Soy Free, Gluten Free, Vegetarian

Now Foods Kelp Tablets provide a convenient way to support your daily iodine intake, with each tablet containing 150mcg of natural iodine. This high dosage is beneficial for maintaining healthy thyroid function. The product boasts good bioavailability, ensuring that your body can effectively absorb the nutrients. Additionally, these tablets are free from gluten and soy, making them suitable for various dietary preferences, including vegan diets. Quality is assured as they are tested in independent laboratories for purity and safety.

What We Like
High natural iodine content
Good bioavailability
Gluten and soy free
Vegan-friendly
Lab-tested for quality
#TOP 4

Organic Thyroid Support with Sea Kelp and Selenium

CLAV-11-UK
Organic Thyroid Support with Sea Kelp and Selenium Cover
Organic Thyroid Support Supplement with Organic Sea Kelp Iodine and Selenium from Mustard Seed Extract - 120 Capsules - Natural Iodine Supplement for Men & Women - Vegan and Gluten Free

CLAV Organic Thyroid Support offers a unique blend of organic kelp and mustard seed extract, providing you with essential iodine and selenium. With just one capsule daily, you can easily meet your iodine needs, supporting your thyroid health. This supplement uses natural ingredients, ensuring your body receives the best nourishment. Additionally, it is produced sustainably in Germany, adhering to strict quality standards, making it a responsible choice for health-conscious consumers.

What We Like
Organic ingredients
High iodine and selenium dosage
Sustainable production
Vegan and gluten-free
#TOP 5

New Nordic Irish Sea Moss Extract Tablets

New Nordic Irish Sea Moss Extract Tablets Cover
New Nordic Irish Sea Moss Extract - Powerful Tri-Algae Complex with Pure Kelp & Seaweed - Vegan & Gluten Free - Compressed Raw Powder - 30 Tablets

The New Nordic Sea Moss provides triple action benefits from three unique sea algae extracts. These work together to support your digestive and immune systems, promoting overall health. You will find that it aids in weight control, with ingredients like Wakame and Norwegian Kelp facilitating weight loss alongside a balanced diet. Packed with essential nutrients, each small tablet delivers vitamins A, E, F, and K, along with prebiotic minerals. Enjoy the simplicity of taking just one tasteless tablet a day with water for these health benefits.

What We Like
Supports digestive health
Aids in weight control
Rich in essential nutrients
One tasteless tablet daily
Vegan and gluten-free

KIKI Health Organic Sea Kelp Iodine Supplement for Thyroid Support

KIKI Health Organic Sea Kelp Iodine Supplement for Thyroid Support Cover
KIKI Health Organic Sea Kelp Iodine Supplement | Thyroid Support Natural Antioxidants | Immunity & Metabolism | Gluten- & GMO-Free, 90 Capsules, 500mg

KIKI Health Sea Kelp is an organic iodine supplement designed to elevate your iodine intake naturally. Each capsule provides 250µg of iodine, essential for producing thyroid hormones that regulate your metabolism and energy conversion. This supplement also supports normal cognitive function, aiding memory and attention, which can enhance your mental clarity. Additionally, it assists in maintaining a healthy energy-yielding metabolism, making it easier for you to stay active and energetic throughout the day.

What We Like
High in natural iodine
Supports thyroid function
Aids cognitive performance
Boosts energy metabolism
#TOP 7

Nutravita Sea Kelp 2000mg Supplement

Nutravita Sea Kelp 2000mg Supplement Cover
Sea Kelp 2000mg - Natural Source of Iodine - Normal Cognitive Function, Energy Yielding Metabolism, Nervous System Function, Skin and Production of Thyroid Hormones - 8 Month Supply - Nutravita

Nutravita Sea Kelp offers a natural source of iodine, essential for maintaining normal cognitive function and energy-yielding metabolism. By supporting the proper functioning of your nervous system, it helps enhance your overall mental well-being. This high-strength supplement also promotes healthy skin and thyroid hormone production, ensuring you feel your best. With each tablet delivering 2000mg of sustainably sourced sea kelp, you can confidently incorporate this vegan-friendly supplement into your daily routine for eight months of support.

What We Like
Rich natural source of iodine
Sustainably sourced ingredients
Vegan-friendly and gluten-free
Supports cognitive and nervous system function
Long-lasting 8-month supply
#TOP 8

Natures Aid Kelp with Calcium Tablets 187mg

072041
Natures Aid Kelp with Calcium Tablets 187mg Cover
Natures Aid Kelp with Calcium Tablets 187mg, 180 Tablets

Natures Aid Kelp Tablets provide a rich source of iodine, which is essential for maintaining healthy thyroid function. Sourced from the pristine Atlantic Ocean off the coast of Canada, these tablets ensure high-quality ingredients. You can enjoy peace of mind knowing that they contain no artificial flavours, colours, or preservatives, making them a wholesome choice. Additionally, they are suitable for both vegetarians and vegans, offering a convenient way to boost your nutrient intake without compromising your dietary preferences.

What We Like
Rich source of iodine
High-quality ocean-sourced ingredients
No artificial additives
Vegetarian and vegan-friendly
#TOP 9

LN Sea Moss & Bladderwrack Capsules 1000mg

LN-SeaMoss-BWrack-90
LN Sea Moss & Bladderwrack Capsules 1000mg Cover
LN Sea Moss & Bladderwrack Supplement | 90 Irish Seamoss & Bladderwrack Capsules - 1000mg Sea Moss & 1000mg Bladderwrack per Serving | High Strength Iodine Supplement | Non-GMO, Gluten Free

LN Sea Moss Capsules offer an impressive blend of Irish Sea Moss and Bladderwrack, with each daily capsule delivering 1000mg of each. This means you benefit from essential minerals like potassium and magnesium, which can help support overall health. The product is free from synthetic fillers, ensuring you get pure ingredients. With 90 capsules per bottle, it provides excellent value for a three-month supply, making it a convenient choice for anyone looking to enhance their nutritional intake.

What We Like
High strength iodine supplement
Non-GMO and gluten-free
Suitable for vegans and vegetarians
No artificial fillers
Great value for money
#TOP 10

Prowise Sea Kelp 2000mg Vegan Tablets

Prowise Sea Kelp 2000mg Vegan Tablets Cover
Sea Kelp 2000mg 200 Vegan Tablets | Natural Source of Iodine | Premium Ingredients | Proudly Made in The UK by Prowise

Prowise Sea Kelp Tablets offer a sustainable and abundant source of iodine, essential for maintaining healthy bodily functions. Each high-strength 2000mg tablet is suitable for both men and women, making it a convenient vegan-friendly option for your daily supplement routine. With no harmful GMOs, gluten, lactose, or wheat, you can feel confident in what you're taking. Additionally, the rigorous quality control ensures that you receive a product crafted to the highest standards, supporting your journey towards better health.

What We Like
Sustainably harvested ingredients
Vegan-friendly formulation
High strength dosage
No harmful additives
Long-lasting supply
Buying Guide Image
Editor's Notes

During our gluten-free kelp supplement research, we found 38 gluten-free kelp supplement products and shortlisted 10 quality products. We collected and analyzed 9,832 customer reviews through our big data system to write the gluten-free kelp supplements list. We found that most customers choose gluten-free kelp supplements with an average price of £17.03.

The gluten-free kelp supplements are available for purchase. We have researched hundreds of brands and picked the top brands of gluten-free kelp supplements, including Nature's Plus, BIRCH & WILDE, NOW, CLAV, New Nordic Ltd. The seller of top 1 product has received honest feedback from 189 consumers with an average rating of 4.8.

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."