20 Best Kelp Supplements [2024]

Are you looking for the best kelp supplements? Based on expert reviews, we ranked them. We've listed our top-ranked picks, including the top-selling kelp supplements.

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1 Nature's Way Kelp - Kelp Dietary Supplement - Supports Thyroid Function* - Iodine Supplement for Men... Nature's Way Kelp - Kelp Dietary Supplement - Supports Thyroid Function* - Iodine Supplement for...
2 NOW Supplements, Kelp 325 mcg of Natural Iodine, Supports Healthy Thyroid Function*, Super Green,... NOW Supplements, Kelp 325 mcg of Natural Iodine, Supports Healthy Thyroid Function*, Super Green,...
3 Solgar North Atlantic Kelp, 250 Tablets - Natural Source of Iodine - Supports Healthy Thyroid... Solgar North Atlantic Kelp, 250 Tablets - Natural Source of Iodine - Supports Healthy Thyroid...
4 Raw Whole Food Iodine from Kelp (Ascophyllum Nodosum) by Peak Performance. Thyroid Support... Raw Whole Food Iodine from Kelp (Ascophyllum Nodosum) by Peak Performance. Thyroid Support...
5 Swanson Kelp - Natural Iodine Source Supporting Thyroid Health - Mineral Supplement w/Iodine Source... Swanson Kelp - Natural Iodine Source Supporting Thyroid Health - Mineral Supplement w/Iodine...
6 Life Extension Sea-Iodine Capsules, 1000 mcg, 150 Veg Caps, Natural Iodine Supplement from Kelp and... Life Extension Sea-Iodine Capsules, 1000 mcg, 150 Veg Caps, Natural Iodine Supplement from Kelp...
7 Country Life Arctic Kelp, Iodine Supplement for Thyroid Health Support, 300 Tablets, Certified... Country Life Arctic Kelp, Iodine Supplement for Thyroid Health Support, 300 Tablets, Certified...
8 Seaweed Kelp Supplements | Oceangreen Organics New Zealand | Premium - 100% Pure Organic & Natural -... Seaweed Kelp Supplements | Oceangreen Organics New Zealand | Premium - 100% Pure Organic & Natural...
9 Nature's Way Kelp; 600 mg Non-GMO Project Verified Gluten Free Vegetarian; 100 Count Nature's Way Kelp; 600 mg Non-GMO Project Verified Gluten Free Vegetarian; 100 Count
10 NOW Supplements, Kelp 150 mcg of Natural Iodine, Easier to Swallow Tablet, Super Green, 200 Tablets NOW Supplements, Kelp 150 mcg of Natural Iodine, Easier to Swallow Tablet, Super Green, 200 Tablets
11 Sea Kelp 325mcg 200 Veggie Capsules ( Non-GMO & Gluten Free, Made with Organic kelp) Sea Kelp 325mcg 200 Veggie Capsules ( Non-GMO & Gluten Free, Made with Organic kelp)
12 Oregons Wild Harvest, Kelp, 90 Count Oregons Wild Harvest, Kelp, 90 Count
13 Life Line Pet Nutrition Organic Ocean Kelp Supplement for Skin & Coat, Digestion in Dogs &... Life Line Pet Nutrition Organic Ocean Kelp Supplement for Skin & Coat, Digestion in Dogs &...
14 Solid Gold SeaMeal Multivitamin for Cats & Dogs - Grain Free Kelp Supplement - Digestive Enzymes for... Solid Gold SeaMeal Multivitamin for Cats & Dogs - Grain Free Kelp Supplement - Digestive Enzymes...
15 Natural Nutra Kelp Iodine Supplement, Thyroid Support, Regulates Metabolism, 225 mcg, 250 Tablets Natural Nutra Kelp Iodine Supplement, Thyroid Support, Regulates Metabolism, 225 mcg, 250 Tablets
16 XPRS Nutra Organic Kelp Powder (Ascophyllum Nodosum) - Seaweed Powder Rich in Iodine, Immune... XPRS Nutra Organic Kelp Powder (Ascophyllum Nodosum) - Seaweed Powder Rich in Iodine, Immune...
17 Best Naturals Kelp Supplement 150 Mcg Tablet, 300 Count Best Naturals Kelp Supplement 150 Mcg Tablet, 300 Count
18 Nutricost Kelp Tablets, 325mcg of Iodine, 240 Tablets - Non-GMO, Gluten Free Nutricost Kelp Tablets, 325mcg of Iodine, 240 Tablets - Non-GMO, Gluten Free
19 Liquid Iodine Supplement with Organic Kelp - Kosher Vegan Potassium Iodide Drops Solution - Alcohol... Liquid Iodine Supplement with Organic Kelp - Kosher Vegan Potassium Iodide Drops Solution -...
20 Raw Sea Kelp Powder Supplement - 600mg Capsules 100 Pills Powdered Raw Seaweed & Thyroid Support... Raw Sea Kelp Powder Supplement - 600mg Capsules 100 Pills Powdered Raw Seaweed & Thyroid Support...
Bestseller No. 1
Nature's Way Kelp - Kelp Dietary Supplement - Supports Thyroid Function* - Iodine Supplement for Men...
  • Each kelp capsule provides 270 mcg of iodine, equating to 180% Daily Value, to support thyroid function.*
  • Each bottle contains 180 vegan dietary supplement capsules, each capsule delivering 600 mg of whole thallus kelp.
  • Adults take 1 capsule daily; do not exceed recommended dose.
  • Nature's Way kelp supplement meets the rigorous standards of the Non-GMO Project; kelp is gluten free and vegan, with no wheat, soy, corn, dairy, or...
  • At Nature’s Way, we believe nature is the ultimate problem solver. For over 50 years, we have looked to the natural world for inspiration. Our...
SaleBestseller No. 2
NOW Supplements, Kelp 325 mcg of Natural Iodine, Supports Healthy Thyroid Function*, Super Green,...
  • SUPER GREENS/325 mcg OF NATURAL IODINE: NOW Kelp delivers the natural nutrient profile found in Genuine Whole Foods. Take 1 capsule daily with a meal.
  • Product Note: Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product...
  • SUPPORTS HEALTHY THYROID FUNCTION*: Kelp is an excellent source of iodine, which has been shown to be essential for healthy thyroid function.*
  • CLASSIFICATIONS/CERTIFICATIONS: Non-GMO, Kosher, Dairy Free, Egg Free, Nut Free, Soy Free, Vegan/Vegetarian
  • GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our...
Bestseller No. 3
Solgar North Atlantic Kelp, 250 Tablets - Natural Source of Iodine - Supports Healthy Thyroid...
  • Natural Source Of Iodine; Kelp is derived from the sea; It is a naturally rich source of iodine, which is an essential component of the thyroid...
  • Healthy Thyroid Function; The iodine from kelp helps to support healthy thyroid hormone levels; Thyroid hormone also helps regulate the function of...
  • Gluten, Wheat & Dairy Free; Solgar North Atlantic Kelp is kosher, and free of: gluten, wheat, dairy, soy, yeast, sugar, artificial flavor, sweetener,...
  • The Gold Standard: For over 70 years, Solgar has been committed to quality, health, and well-being. Our mission is to create the finest nutritional...
  • During the summer months products may arrive warm but Amazon stores and ships products in accordance with manufacturers' recommendations, when...
Bestseller No. 4
Raw Whole Food Iodine from Kelp (Ascophyllum Nodosum) by Peak Performance. Thyroid Support...
  • Most Iodine supplements use weak formulas with synthetic vitamins as well as fillers. Peak Performace offers one of the most potent sources of iodine...
  • Potency & Maximum Absorption - Raw whole food is better digested and assimilated into the body. Great for Thyroid Support, Hormonal Balance, Immune...
  • Vegan Formulated - Free of Gluten, GMOs, Additives, Preservatives, Artificial Colors, Soy, and Dairy. Manufactured Under The Highest Quality GMP...
  • Important - Most Supplements Sold Online Are Not 3rd Party Tested! This is a dirty secret that many supplement sellers don't want you to know that...
  • Over 400,000 Happy Customers + 1-for-1 Donation To Vitamin Angels. Peak Performance is celebrating over 400,000 happy customers and we are also very...
Bestseller No. 5
Swanson Kelp - Natural Iodine Source Supporting Thyroid Health - Mineral Supplement w/Iodine Source...
  • NATURAL THYROID SUPPORT: Swanson Kelp is a unique formula that helps promote thyroid health. A rich source of iodine, this ocean plant is packed with...
  • POWERFUL FORMULA: This natural thyroid supplement delivers 225mcg sea kelp standardized to 0.4% iodine per tablet in an easy-to-swallow form you can...
  • DOSAGE INSTRUCTIONS: Our wellness supplements offer everyday solutions for an enhanced mind, body, and home using only the purest ingredients. For...
  • OUR QUALITY COMMITMENT: For nearly 50 years, Swanson has delivered science-backed health products worldwide. Each wellness supplement is made in our...
  • MONEY BACK GUARANTEE: At Swanson, we guarantee that every health product is made from the purest, freshest ingredients. If you aren't satisfied with...
Bestseller No. 6
Life Extension Sea-Iodine Capsules, 1000 mcg, 150 Veg Caps, Natural Iodine Supplement from Kelp and...
  • ✅ NEW SIZE: LifeExtension Sea Iodine 1000mcg in Vegetarian Capsules
  • ✅ BIOAVAILABLE: Food-Grade Iodine from natural seaweed source for thyroid support
  • ✅ ENHANCED Iodine supplement from Kelp and Bladderwack extracts and potassium iodide
  • ✅ SMALL CAPSULES: Easy to swallow
  • ✅ ADD to your cart because this supplement is NON GMO and VEGETARIAN
Bestseller No. 7
Country Life Arctic Kelp, Iodine Supplement for Thyroid Health Support, 300 Tablets, Certified...
  • Green superfood – Excellent source of natural iodine.
  • Supports thyroid health – Iodine is known for helping to support healthy thyroid function.
  • Free of - No milk, wheat, soy, yeast or artificial flavors
  • Certified – Certified Gluten Free by GFCO and Certified Vegan by AVA
Bestseller No. 8
Seaweed Kelp Supplements | Oceangreen Organics New Zealand | Premium - 100% Pure Organic & Natural -...
  • NATURAL THYROID SUPPORT SUPPLEMENT - potent & rich source of natural iodine for thyroid support and a healthy metabolism. Thyroid hormone helps to...
  • IMMUNE & GUT HEALTH SUPPORT- supports a healthy digestive system - Supporting the absorption of nutrients -Seaweed is an excellent source of fiber,...
  • RICH SOURCE OF ESSENTIAL VITAMINS & MINERALS - Seaweed contains rich & essential source of nutrients that may help strengthen your immune system, and...
  • WOMENS NATURAL HEALTH SUPPLEMENT - Assists to stimulate collagen production and to strengthen hair and nails. Can support and ease Menopause symptoms.
  • A small niche and passionate New Zealand business is committed to delivering highest natural quality products that sustainably harness incredible...
Bestseller No. 9
Nature's Way Kelp; 600 mg Non-GMO Project Verified Gluten Free Vegetarian; 100 Count
  • SUPERIOR QUALITY STANDARDS: Our Kelp is carefully tested and produced to superior quality standards.
  • CONTAINS IODINE: Nature's Way Kelp is a nutritional seaweed guaranteed to contain iodine.
  • NON-GMO PROJECT VERIFIED: We're proud partners with The Non-GMO Project. In keeping with our mission to follow the best sourcing, manufacturing and...
  • GLUTEN-FREE AND VEGETARIAN: Our Kelp is gluten free and vegetarian, made from plant-derived capsules. It also contains no sugar, salt, yeast, wheat,...
  • SERVING RECOMMEDATION: Take 1 capsule daily. Do not exceed recommended dose.
SaleBestseller No. 10
NOW Supplements, Kelp 150 mcg of Natural Iodine, Easier to Swallow Tablet, Super Green, 200 Tablets
  • 150 mcg OF NATURAL IODINE: Kelp is a large, leafy seaweed belonging to the brown algae family that grows in "forests" in the colder waters of the...
  • SUPPORTS HEALTHY THYROID FUNCTION*: Excellent source of iodine, which has been shown to be essential for healthy thyroid function.*
  • EASIER TO SWALLOW TABLETS: Kelp has been used for centuries as an important nutritious staple ingredient in Chinese, Japanese, and Korean cuisines.
  • GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our...
  • Packaged in the USA by a family owned and operated company since 1968.
Bestseller No. 11
Sea Kelp 325mcg 200 Veggie Capsules ( Non-GMO & Gluten Free, Made with Organic kelp)
  • Each capsule delivers 325 mcg of Iodine from Kelp.
  • Max Supply (200 Capsules Per Bottle & a 200 Day Supply) Vegan/Vegetarian, Non-GMO & Gluten Free.
  • Advanced and superior Supplement using high-quality sourcing and innovation
  • Our formulations are crafted with high quality, clean and non-GMO ingredients and care for the customers' wellness.
  • Manufactured in the USA , in a cGMP registered facility with the highest manufacturing and sourcing standards.
Bestseller No. 12
Oregons Wild Harvest, Kelp, 90 Count
  • Natural source of iodine
  • Crack open a bottle and inhale. That's organic Kelp responsibly harvested from clean Atlantic Ocean waters off the coast of Nova Scotia. Freshly...
  • NO artificial flavors, colors, excipients or stearates
  • Product verified Non-GMO by SGS, a 3rd-party independent lab
  • All Oregon's Wild Harvest products are manufactured with love by us in Redmond, OR USA
Bestseller No. 13
Life Line Pet Nutrition Organic Ocean Kelp Supplement for Skin & Coat, Digestion in Dogs &...
  • Pure, rich source of natural vitamins and minerals: our Ocean Kelp contains naturally occurring phytochemicals and Omega‐3 fatty acids that are...
  • Supports overall health along with vibrant, healthy, skin and coat; Reducing excessive shedding, replenishes moisture in animal's skin to reduce...
  • Supports the thyroid to maintain a healthy weight; promotes healthy digestion and increased metabolism; supports the immune system to fight off...
  • ORGANIC ICELANDIC KELP: 100% Certified Organic by WSDA to USDA National Organic Program standards; grown in Iceland & harvested to the strictest...
Bestseller No. 14
Solid Gold SeaMeal Multivitamin for Cats & Dogs - Grain Free Kelp Supplement - Digestive Enzymes for...
  • I 'Sea' Something Yummy! - Solid Gold SeaMeal is a kelp-based dog and cat supplement that mixes with your pet's favorite wet or dry food for the best...
  • Nutrient Rich Powder - Utilizing seaweed, earth's original Superfood, this SeaMeal combines red, green and brown seaweed species (such as kelp) to...
  • Enzyme Support for Digestion - This premium and nourishing powder features digestive enzymes to support gut health for your dog or cat.
  • Skin & Coat Support - These supplements have 60 minerals, 12 vitamins, 22 amino acids, omega 3, and flaxseed to provide your pet with supreme support...
  • Cleansing Superfood Support – Features a blend of vitamin and nutrient-rich superfoods to help cleanse and nourish any small, medium, or large sized...
Bestseller No. 15
Natural Nutra Kelp Iodine Supplement, Thyroid Support, Regulates Metabolism, 225 mcg, 250 Tablets
  • NATURALLY BOOST METABOLISM, DETOXIFY YOUR BODY AND STRENGTHEN IMMUNE SYSTEM- Our kelp iodine supplements improve your thyroid glandular function in...
  • NATURALLY BOOST METABOLISM, DETOXIFY YOUR BODY AND STRENGTHEN IMMUNE SYSTEM- Our kelp iodine supplements improve your thyroid glandular function in...
  • A FRIEND TO YOUR TUMMY- Poor digestive function can lead to gas, bloating, or nausea. Kelp Iodine extract may help support digestive health through...
  • MORE ENERGY & VIGOR- Ward off feelings of tiredness by taking this supplement. Kelp Iodine extract is naturally loaded with B vitamins, which are...
  • BPA FREE, RECYCLABLE GLASS BOTTLES- Cheap plastic bottles are harmful to your health. We seal your supplements in non-polluting amber glass bottles...
Bestseller No. 16
XPRS Nutra Organic Kelp Powder (Ascophyllum Nodosum) - Seaweed Powder Rich in Iodine, Immune...
  • Pure Canadian Kelp Powder: We take great care to ensure that we are sourcing our kelp supplement from trusted suppliers. This pure seaweed powder is a...
  • Balance Your Diet: Sea kelp powder contains naturally occurring iodine, which may help to support a balanced diet when incorporated into a nutritious...
  • Skin Moisture: Seaweed and kelp powder are mineral and antioxidant rich, and have been known to soften and hydrate the skin by retaining moisture....
  • Versatile Sea Superfood: Try this seaweed kelp powder as a shake and smoothie booster, as a topping for salad and pasta, or incorporate it into your...
  • Love Your Supplements: You'll love the superior quality and convenience of our kelp seaweed powder. Here at XPRS Nutra, our first priority is ensuring...
Bestseller No. 17
Best Naturals Kelp Supplement 150 Mcg Tablet, 300 Count
  • Kelp is a natural source of iodine
  • Kelp supplement helps thyroid function normally
  • Provides nutritive support
  • No Artificial Color, Flavor or Sweetener, No Preservatives, No Sugar, No Starch, No Corn, No Soy, No Egg, No Lactose, No Gluten, No Wheat, No Yeast,...
  • During the summer months products may arrive warm but Amazon stores and ships products in accordance with manufacturers' recommendations, when...
SaleBestseller No. 18
Nutricost Kelp Tablets, 325mcg of Iodine, 240 Tablets - Non-GMO, Gluten Free
  • Natural Source Of Iodine, Made With Sea Greens
  • 325mcg Of Iodine (From Sea Kelp) In Each Tablet
  • 240 Easy-To-Swallow Tablets
  • Non-GMO, Gluten Free, Vegetarian Friendly
  • Made In A GMP Compliant Facility
Bestseller No. 19
Liquid Iodine Supplement with Organic Kelp - Kosher Vegan Potassium Iodide Drops Solution - Alcohol...
  • Made With Iodine and Organic Kelp,Our Iodine and Kelp Extract is Made with Only the Best Ingredients
  • Trusted High Quality Formula,Made with 150mcg Iodine and 2mg Organic Kelp. Made with NO Harsh Preservatives, Alcohol Free - NO Sodium Benzoate, NO...
  • Made in USA FDA Registered,GMP and Kosher Certified Facility to Ensure the Highest Quality, Potency and Consistency Every Time.
  • Natural Thyroid Support,Helps Naturally Support Thyroid Function. *
  • Try Our Products with No Risk,At Pure Mountain Botanicals we take your experience with our products to heart. If you are not happy with our product,...
Bestseller No. 20
Raw Sea Kelp Powder Supplement - 600mg Capsules 100 Pills Powdered Raw Seaweed & Thyroid Support...
  • RICH IN IODINE: Derived from the sea, Raw Sea Kelp is a naturally rich source of iodine which is a key component of the thyroid hormone that plays a...
  • THYROID BENEFITS: The iodine provided by a Kelp Supplement helps support healthy thyroid hormone levels. Thyroid hormone helps to regulate the...
  • KOSHER, GLUTEN FREE & SUITABLE FOR VEGETARIANS: These vegatable capsules are OU Kosher certified and are certified gluten free. They are free of:...
  • KELP CONTAINS 16 DIFFERENT AMINO ACIDS: Amino Acids are the building blocks of protein. By helping to boost the protein content in our body, kelp can...
  • MADE IN USA: Our Raw Sea Kelp Powder Capsules are gluten free and vegetarian, made from plant-derived capsules. They also contains no sugar, salt,...

Having trouble finding a great kelp supplements?

This problem is well understood by us because we have gone through the entire kelp supplements research process ourselves, which is why we have put together a comprehensive list of the best kelp supplementss available in the market today.

After hours of searching and using all the models on the market, we have found the best kelp supplements for 2023. See our ranking below!

How Do You Buy The Best Kelp Supplements?

Do you get stressed out thinking about shopping for a great kelp supplements? Do doubts keep creeping into your mind?

We understand, because we’ve already gone through the whole process of researching kelp supplements, which is why we have assembled a comprehensive list of the greatest kelp supplements available in the current market. We’ve also come up with a list of questions that you probably have yourself.

John Harvards has done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for kelp supplements that you consider buying. Your questions might include the following:

  • Is it worth buying an kelp supplements?
  • What benefits are there with buying an kelp supplements?
  • What factors deserve consideration when shopping for an effective kelp supplements?
  • Why is it crucial to invest in any kelp supplements, much less the best one?
  • Which kelp supplements are good in the current market?
  • Where can you find information like this about kelp supplements?

We’re convinced that you likely have far more questions than just these regarding kelp supplements, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for kelp supplements, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible kelp supplements. Make sure that you are only using trustworthy and credible websites and sources.

John Harvards provides an kelp supplements buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information.

How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available kelp supplements currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

  1. Brand Value: Every brand of kelp supplements has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
  2. Features: What bells and whistles matter for an kelp supplements?
  3. Specifications: How powerful they are can be measured.
  4. Product Value: This simply is how much bang for the buck you get from your kelp supplements.
  5. Customer Ratings: Number ratings grade kelp supplements objectively.
  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their kelp supplements.
  7. Product Quality: You don’t always get what you pay for with an kelp supplements, sometimes less, and sometimes more.
  8. Product Reliability: How sturdy and durable an kelp supplements is should be an indication of how long it will work out for you.

John Harvards always remembers that maintaining kelp supplements information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

If you think that anything we present here regarding kelp supplements is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly!

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FAQ:

Q: Is kelp the same as taking an iodine supplement?

A: Kelp is a type of seaweed known for its rich iodine content. It is available as a dietary supplement in the form of capsules, powder and teas. It is commonly marketed for thyroid support. You should use caution when taking kelp supplements. Excess iodine from kelp can cause adverse health effects. Consult your doctor before taking kelp supplements.

Q: Is it safe to take kelp supplements?

A: When it comes to consuming kelp, it’s best to do so in its natural form. Kelp supplements can come with some serious health risks, and excessive amounts of iodine can cause harm to the thyroid. The FDA recommends a dietary intake of 150 micrograms (mcg) of iodine per day. Then, what are the side effects of kelp?

Q: Can taking kelp be dangerous?

A: One of the kelp supplement side effects therefore is loose bowel movements or even diarrhea. The latter can lead to dehydration, which is dangerous since your body lacks the necessary electrolytes to function properly. You may also end up taking sea kelp supplements that contain either less or more than the required doses.

Q: What is the best kelp?

A: Best Naturals Kelp 150 mcg 300 Tablets *Healthy Thyroid Function* 8.5 8.0 8.6 6: Icelandic Kelp, 250 Tablets 8.4 7.9 8.5 7: Best Naturals Kelp 150 mcg 300 Tablets *Healthy Thyroid Function*exp 10 …