Sea Kelp
FailPrices span $3.52–$14.89, mostly outside the sweet spot, so Sea Kelp is a Fail.
- Flapen Score
- 40 / 100Ranks 1,670 of 2,035 Health & Personal Care niches · −8 vs the category median of 4840
- Market size
- £79K/yr66K searches / yr
- 90-day growth
- -16.7%search demand this quarter
- Competition
- 79%top-5 click share · 13 brands · 26 sellers
Flapen Score
Sea Kelp against its category
The dotted line is the Health & Personal Care average. Past it, Sea Kelp is stronger. Inside it, weaker.
Market
The Sea Kelp market on Amazon at a glance
Shoppers on Amazon United Kingdom searched for Sea Kelp 66K times last year and spent an estimated £79K. The top 5 brands take 79% of clicks. Flapen scores it 40 out of 100, a Fail.
01 · Demand
An estimated 13.5% of those searches ended in a purchase.
Shoppers searched for this 66K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. An estimated 13.5% of those searches ended in a purchase. Searches in the last 90 days moved -16.7% against the 90 days before. Searches, conversion and average price together put the market at an estimated £79K a year.
- Searches, last 12 months
- 66K
- Growth, 90 days vs prior 90
- -16.7%
- Conversion, latest week
- 13.5%
- Market size, estimated
- £79Ka year
- Peak month
- October1.3× the quietest month
- Top search term
- sea kelp23K searches a year
02 · Price
A sale here is worth £8.93.
Listings sell for £8.93 on average, from £3.52 to £14.89. Amazon reports units sold in ranges. This niche sold 8K to 10K a year. The average listing sells 500 to 750 of them. At £8.93 that is £4K to £7K a year per listing.
- Average price
- £8.93under the $15 to $100 sweet spot
- Price range
- £3.52–£14.89
- Amazon United Kingdom median price
- £12.12across 27,606 niches
- Units sold a year
- 8K–10K
- Units per listing a year
- 500–750
- Revenue per listing a year
- £4K–£7K
- Returns
- 0.1%of orders · Amazon United Kingdom median 0.6%
03 · Entry bar
The bar here is low.
85% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 5.9% of listings are out of stock. The average listing ranks #92 within Combination Multivitamins & Minerals. It carries 733 reviews at 4.57 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 85%
- Prime listings
- 100%
- Out of stock, average day
- 5.9%
- Average rank
- #92in Combination Multivitamins & Minerals
- Average rating
- 4.57 starsAmazon United Kingdom average 4.36 stars
- Average reviews
- 733per listing
- Listings tracked
- 13
04 · Newcomers
Brands here are established.
The brands on the shelf have sold for 70 months on average, so the names here are established.
- Launched, last 12 months
- 0
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 70 months
Products
Top Sea Kelp products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 25, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Sea Kelp 2000mg 200 Vegan Tablets | Natural Source of Iodine | Premium Ingredients | Proudly Made in the UK by Prowise
- Price
- £6.86
- Rating
- 4.5/5
- Reviews
- 511
- Age
- 3y ago

Natures Aid Sea Kelp 187mg 180 Vegan Tablets High Strength Iodine Supplement Supports Thyroid Function & Skin With Calcium Gluten Free Natural Source No Artificial Additives
- Price
- £3.94
- Rating
- 4.5/5
- Reviews
- 995
- Age
- 20y ago

Sea Kelp Tablets 4000mg | Natural Source of Iodine | 3 Months Supply | High Strength Kelp Extract | 180 Vegan Tablets | by Horbaach
- Price
- £6.27
- Rating
- 4.6/5
- Reviews
- 1,483
- Age
- 6y ago

INNOPURE Organic Sea Kelp 500mg Pure-Fill (No Fillers or Binders) 435mcg of Iodine Supplement per Capsule Soil Association Certified UK Made 90 Capsules (3 Month Supply)
- Price
- £13.38
- Rating
- 4.5/5
- Reviews
- 1,037
- Age
- 1y ago

Sea Kelp Extract 2520mg Tablets - 500g Natural Iodine - 180 Vegan Tablets (6 Months Supply) - High Strength 30:1 Ascophyllum Nodosum Extract - Resealable and Recyclable Pouch by Alpha01
- Price
- £6.69
- Rating
- 4.8/5
- Reviews
- 52
- Age
- 6y ago
Trending
estimated 90-day click momentum
Organic Kelp Supplement 500mg - 120 Vegan Capsules - G&G Vitamins
- Price
- £8.88
- Rating
- 4.6/5
- Reviews
- 436
- Age
- 13y ago

INNOPURE Organic Sea Kelp 500mg Pure-Fill (No Fillers or Binders) 435mcg of Iodine Supplement per Capsule Soil Association Certified UK Made 90 Capsules (3 Month Supply)
- Price
- £13.38
- Rating
- 4.5/5
- Reviews
- 1,037
- Age
- 1y ago

Sea Kelp Extract 2520mg Tablets - 500g Natural Iodine - 180 Vegan Tablets (6 Months Supply) - High Strength 30:1 Ascophyllum Nodosum Extract - Resealable and Recyclable Pouch by Alpha01
- Price
- £6.69
- Rating
- 4.8/5
- Reviews
- 52
- Age
- 6y ago

Nutrivolv Sea Kelp 2000mg Iodine Supplement - 60 Tablets - Source of Iodine Thyroid Improves Hair Growth Skin & Immune System
- Price
- £3.52
- Rating
- 4.4/5
- Reviews
- 91
- Age
- 4y ago

Natures Aid Sea Kelp 187mg 180 Vegan Tablets High Strength Iodine Supplement Supports Thyroid Function & Skin With Calcium Gluten Free Natural Source No Artificial Additives
- Price
- £3.94
- Rating
- 4.5/5
- Reviews
- 995
- Age
- 20y ago
Newest
by launch date
INNOPURE Organic Sea Kelp 500mg Pure-Fill (No Fillers or Binders) 435mcg of Iodine Supplement per Capsule Soil Association Certified UK Made 90 Capsules (3 Month Supply)
- Price
- £13.38
- Rating
- 4.5/5
- Reviews
- 1,037
- Age
- 1y ago

Sea Kelp Iodine Supplement Complex - 365 Vegan Tablets - 435mcg of Iodine per Tablet - 1 Year Supply - Wild Harvested Seaweed - GMO Free - Made in The UK - Nu U Nutrition
- Price
- £14.34
- Rating
- 4.4/5
- Reviews
- 315
- Age
- 2y ago

Sea Kelp 2000mg 200 Vegan Tablets | Natural Source of Iodine | Premium Ingredients | Proudly Made in the UK by Prowise
- Price
- £6.86
- Rating
- 4.5/5
- Reviews
- 511
- Age
- 3y ago

Sea Kelp 500 mg with Iodine High Strength Vegan Supplement for Thyroid Support and Skin Soil Association Organic and Made in UK 60 Capsules (2 Months Supply)
- Price
- £10.41
- Rating
- 4.7/5
- Reviews
- 43
- Age
- 3y ago

KIKI Health Organic Sea Kelp Iodine Supplement | Thyroid Support Natural Antioxidants | Immunity & Metabolism | Gluten- & GMO-Free 90 Capsules 500mg
- Price
- £14.89
- Rating
- 4.6/5
- Reviews
- 61
- Age
- 4y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 79% of clicks. A locked shelf that new listings rarely crack.
Brands
13 falling
Sellers
26
Est. top-5 brand share
79%
Top 20: 100%
Est. top-5 click share
79%
Top 20: 100%
Open market
17%
- PH PROWISE Healthcare28%
- Natures Aid21%
- Horbäach19%
- INNOPURE5%
- ALPHA015%
- Nutravita5%
- Open — no brand owns it (7 brands, 17%)
Demand
Sea Kelp search demand
Weekly searches over the year, seasonality beneath. Pick a range.
No pronounced peak months · busiest ÷ quietest = 1.3×
Search terms
Top Sea Kelp search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- sea kelp23K/yr
- kelp18K/yr
- sea kelp tablets15K/yr
- kelp tablets11K/yr
Reviews and returns
What reviews say buyers love and hate about Sea Kelp
We read the reviews and the return reasons for every product selling here.
“problem ingredients”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
16 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Sea Kelp questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data









