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Botanicals & extractsVegan

Irish Sea Moss Capsules, 90 capsules

£25.99 for 90 capsules at Healf. That works out at 64p per 1 g, which ranks it 6th of the 8 sea moss products we price across 5 UK retailers.

What it really costs, per 1 g64pOne 1 g dose is our comparison unit for sea moss. It is not a recommendation.

A day64p

A week£4.49

A month£19.25

A year£234.23

At one 1 g dose a day, this pack lasts 41 days. A month is 30 days, so twelve of them is not quite a year.

How we worked it out

Servings: 90 ÷ 1 per serving = 90
In the pack: 90 × 450 mg = 40.5 g
£25.99 ÷ 40.5 g × 1 g = 64.2p per 1 g
A week 64.2p × 7 = £4.49 · a month × 30 = £19.25 · a year × 365 = £234.23
Amount per serving: stated on the label.

The standard dose is a comparison unit, not a recommendation. Always confirm the price on the retailer's site. How we compare everything.

Cheaper sea moss

All 8, ranked →

NutravitaHigh Strength Sea Moss 5000mgCheapest per 1 gNutravita · 333 mg a serving · £9.00 a month · a pack lasts 2 months30p£19.99View at Nutravita

Irish Sea MossHealf · 500 mg a serving · £10.31 a month · a pack lasts 45 days34p£15.46View at Healf

ZipVitIrish Sea Moss 4000mgZipVit · 266.8 mg a serving · £12.49 a month · a pack lasts 48 days42p£19.99View at ZipVit

WeightWorldIrish Sea Moss CapsulesWeightWorld · 266.7 mg a serving · £16.39 a month · a pack lasts 32 days55p£17.49View at WeightWorld

ZipVitIrish Sea Moss 4000mgZipVit · 266.8 mg a serving · £17.78 a month · a pack lasts 16 days59p£9.49View at ZipVit

This productHealf · 450 mg a serving · £19.25 a month · a pack lasts 41 days64pshown above

Switching to the Nutravita pack saves £10.25 a month at the same 1 g dose.

Ranked purely by price per 1 g. 6 combination products also contain sea moss.

On the label

Sea moss · Sea moss: 450 mg per serving (stated on the label)
Pack: 90 capsules · 90 servings · 1 capsule(s) a serving
Cost per serving: 29p (90 servings in the pack)

More label details

Claimed on the listing: vegan, gluten-free
Sold by: Healf
What the listing says: “90 caps” · “Servings Per Container: 90” · “Serving Size: 1 Veggie Cap” · “(Chondrus crispus) ; 450 mg”

Ingredients

Organic Irish Moss Thallus (Chondrus crispus), Vegetable Cellulose, Organic Brown Rice Flour

From the Healf listing. Check the pack itself if you have an allergy: labels mark allergens in bold.

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Daily dosemgFordays

One 1 g dose is our comparison unit, not a recommendation.

Price history

No price change since 1 October 2026. Checked on 20 days, most recently 20 October 2026.

Price at every check: £25.99Healf
First recorded: £25.991 Oct
Checked on: 20 dayssince 1 Oct

Pack price at each check.

1 OctFirst checked at Healf: £25.99

Questions about this product

How much does Erewhon Irish Sea Moss Capsules cost per 1 g?

64p per 1 g, from £25.99 for 90 capsules at Healf, checked on 20 October 2026.

Is it the cheapest sea moss in the UK?

No, it is 6th of 8. High Strength Sea Moss 5000mg at Nutravita works out at 30p per 1 g.

How long does one pack last?

41 days at one 1 g dose. The pack holds 40.5 g in total.

About Erewhon

All 15 Erewhon products, priced per dose

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