Sea Moss Is TikTok's Favourite Superfood Again: The Honest UK Guide Before You Buy

Sea moss is having its second viral moment. The hashtag has passed 1.5 billion views on TikTok, celebrities are stirring the gel into smoothies, and TikTok Shop is full of gummies promising everything from glowing skin to a bulletproof immune system. We sell sea moss gummies, so we have every reason to cheer. We would rather you knew what is real first.

Key takeaways

• #seamoss has over 1.5 billion views on TikTok. US sales more than doubled in a year, from about $19 million to $53 million, and the UK is following.
• The trade press asked "is the trend worth its salt?" in January. Fair question: many of the boldest claims (weight loss, thyroid cures, "92 minerals fixes everything") are not backed by clinical evidence.
• What is real: sea moss is a concentrated source of iodine and other minerals, and iodine contributes to normal thyroid function and normal cognitive function. On a vegan diet it is one of the few plant sources.
• What to watch: iodine has an upper limit (600 mcg per day for adults, per EFSA), some gummies carry 8 to 12 g of sugar per serving, and "sea moss" with no species or origin on the label could be anything.
• Our Sea Moss Gummies carry 3,200 mg of wildcrafted Irish sea moss, 2,000 mg of bladderwrack and 480 mg of burdock root per serving, 5,680 mg in total, with the full label on the product page. Strawberry is in stock now.

Why is sea moss everywhere again?

Three things landed at once. Celebrity routines: Kim Kardashian, Hailey Bieber and Dua Lipa have all been reported adding the gel to smoothies. Format: sea moss used to mean a jar of home-made gel that went off in a week; gummies and capsules made it a daily habit anyone can keep. And TikTok Shop: creators can now sell the gummies inside the video, which turned an interesting seaweed into one of the fastest-growing supplement categories in the country.

Analysts at NutraIngredients summed up the mood in January: sea moss is marketed for immunity, gut and skin health and "often marketed as containing 92 minerals", but the strongest claims run ahead of the science. NPR ran a similar piece asking whether the beauty and health claims "sink or swim". Both are worth reading if you like to buy with your eyes open.

What sea moss actually is

Sea moss is a red algae that grows on the Atlantic coasts of Ireland, the UK, Canada and the Caribbean. Traditionally it was boiled into a thickener for puddings and drinks, and in Caribbean households it is still made into a sweet, spiced drink. Its reputation comes from its mineral content. Like most seaweeds it concentrates iodine, and it also carries potassium, magnesium, calcium, iron and zinc in smaller amounts, plus the carrageenan fibre that makes the gel set.

The famous "92 of 102 minerals" line is a traditional description of the seaweed's mineral profile, not a clinical claim, and we say so on our own product page. The honest version is simpler: it is a mineral-dense food, and iodine is the mineral that matters most.

What the trend gets right

• Iodine. The UK reference intake is 150 mcg a day, and it is one of the nutrients most often low in vegan diets because the usual sources are dairy and fish. Iodine contributes to normal thyroid function, normal energy-yielding metabolism and normal cognitive function. Seaweed is a legitimate plant source.
• A daily habit beats a jar of gel. Home-made gel has to be refrigerated and used within a week or two, and the dose varies spoon to spoon. A measured serving in a gummy or capsule is the same every day.
• The traditional stack. Older Caribbean and Irish recipes often paired sea moss with bladderwrack (another iodine-rich seaweed) and burdock root. It is a folk recipe, not a clinical protocol, but it is why our gummy contains all three.

What the trend gets wrong

• "It cures thyroid problems." No. If you have a thyroid condition, extra iodine can make it worse, not better. Talk to your doctor before taking any seaweed supplement.
• "It's a weight-loss superfood." There is no clinical evidence for sea moss and weight loss in humans.
• "More is better." The European Food Safety Authority sets an adult upper limit of 600 mcg of iodine a day. Some raw gel recipes and some "high strength" products blow past that. A good label tells you the iodine per serving.
• "All sea moss is the same." Wildcrafted Chondrus crispus from cold Atlantic water is the traditional species. "Pool-grown" sea moss raised in salt tanks is cheaper and more variable, and products that name neither species nor origin are guessing along with you.
• "Gummies are sweets anyway." Some are. We have seen sea moss gummies with 12 g of sugar in a serving. Ours are pectin-based, sweetened with fruit juice and carry under 2 g.

How to choose a sea moss gummy in the UK

1. Species and origin on the label. "Chondrus crispus, wildcrafted, Atlantic" is what you want to see.
2. Dose per serving, not per bottle. Ours is 3,200 mg of sea moss per two gummies, plus 2,000 mg of bladderwrack and 480 mg of burdock root.
3. Sugar per serving. Under 2 g is good. Over 5 g and you are eating a sweet with a seaweed garnish.
4. Pectin, not gelatin, if you want it vegan.
5. Third-party testing. Seaweed absorbs whatever is in the water it grows in, so heavy-metal testing is not optional. Ask for the certificate of analysis. We test every batch.

Our Sea Moss Gummies tick each of those boxes and print the numbers on the bottle. Sea moss, bladderwrack and burdock root are traditionally used to support everyday wellbeing and a mineral-rich diet; we make no claim beyond that, and we would be suspicious of any brand that does.

Common questions

Is sea moss safe to take every day?
For most healthy adults, a measured daily serving is fine. Keep total iodine from all sources under 600 mcg a day, and skip it if you are pregnant, breastfeeding or have a thyroid condition unless your doctor agrees.

Gel or gummies?
Gel is cheaper per gram but perishable and unmeasured. Gummies cost more but give a consistent dose and last for months in the cupboard. We wrote a full comparison, linked below.

How long before I notice anything?
Sea moss is a food, not a drug. Think of it as topping up minerals over weeks, not feeling different by Friday.

Why bladderwrack and burdock root?
It is the traditional Atlantic recipe. Bladderwrack adds a second iodine source; burdock root is a bitter root used in the same folk preparations. We follow the recipe because it is the version people have trusted for generations.

Which flavour is in stock?
Strawberry right now. Apple and Mango are on their way back.

Read next

• Best Sea Moss Gummies UK 2026: A Buyer's Guide
• Sea Moss Gel vs Gummies vs Capsules
• Sea Moss, Thyroid and Iodine: What You Need to Know

This article is for information only and is not medical advice. Food supplements should not be used as a substitute for a varied diet and a healthy lifestyle. Sources: NutraIngredients, "Sea moss: is the trend worth its salt?", January 2026; NPR, "Do claims about sea moss sink or swim?", September 2025; EFSA tolerable upper intake level for iodine; UK Government reference intakes. Last reviewed September 2026.