Is 5htp profitable to sell on Amazon United Kingdom?

The niche generates £339K/yr across 13 tracked products. 0 of 4 products launched in the last 360 days are still selling. 90-day search growth is -17.2%. Flapen's verdict: Worth a look (53/100).

How competitive is the 5htp niche?

12 brands and 23 sellers compete. The top 5 products take 71% of clicks and top 5 brands hold 78% of demand.

What do buyers complain about in 5htp?

Top complaints mined from reviews: Sleep Quality, Functionality-Overall, Side Effects. The return rate is 0.1%.

When does demand for 5htp peak?

Demand is steady year-round — the busiest month runs 1.3× the quietest.

What does it cost to enter the 5htp niche?

Listings span £6.41–£23.33; the average listing price is £13.10 (sweet spot $15–$100). The average incumbent carries 390 reviews — the moat a new listing must climb.

5htp

Worth a look

Shows low returns (0.1%), but soft demand (-17.2% this quarter) keeps it on the watch list.

Returns

Incredible0.1%

return rate — above 5% kills the launch gate

Conversion

Incredible12.9%

search→purchase rate — share of searches ending in a sale

Review moat

Great389.77

avg incumbent reviews — the moat a new listing must climb

Avg price

Good£13.10

avg listing price — sweet spot $15–$100

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Market size

Good£339K

£339K/yr · 200K searches

Price range

Okay£6.41–£23.33

cheapest to priciest tracked listing — scored on the share inside $15–$100

Brand share

Okay78%

top-5 brand share — brands hold most of the demand

Competition

Bad71%

top-5 click share — a locked-up shelf

Growth

Bad-17.2%

90-day search growth — must beat 0% to launch

Signals Low Review Barrier

According to Flapen's Amazon United Kingdom niche tracking, 5htp is a £339K/yr Amazon United Kingdom market (200K searches/yr). The top 5 brands hold 78% of demand. Verdict: Worth a look — 53/100.

Data updated Jul 25, 2026 · scored weekly · How we score niches

5htp market data

Units sold / yr: 20K–25K; avg 1,500–2,000/product
Revenue / yr: £262K–£328K; units × avg price
Conversion rate: 12.9%
Avg BSR: #481
Page quality: 0%
Prime: 100%
Sponsored: 77%
Out of stock: 0.0%
Avg brand age: 39 months
Avg seller age: 176 days

Competition & brand share

The top 5 products capture 71% of clicks — a locked-up shelf that new listings rarely crack.

Brands

12 rising

Sellers

Top-5 brand share

78%

Top 20: 100%

Top-5 click share

71%

Top 20: 100%

Open market

17%

Nutrivo30%
Solgar24%
Horbäach9%
Lindens9%
Vivanta Nutrition7%
Nature's Army5%
Open — no brand owns it (6 brands, 17%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -17.2% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.3×

Open Trend

Top 5htp search terms

5htp88K/yr -14.3%11.8% conv.
5 htp41K/yr -16.1%10.3% conv.
5-htp22K/yr -14.1%9.7% conv.
5htp high strength 1000mg18K/yr -24.0%13.4% conv.
5 htp supplement high strength10K/yr -27.4%10.3% conv.
htp 5 high strength6K/yr -11.3%9.7% conv.
htp 54K/yr -18.7%7.5% conv.
5htp high strength4K/yr -24.4%9.6% conv.
griffonia 5-htp complex4K/yr -34.9%16.2% conv.
5-htp supplement3K/yr -32.6%11.2% conv.

All search terms

Top 5htp products on Amazon

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 13 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Nutrivo 5HTP Tablets - 90 Tablets Per Pack | 5HTP High Strength Supplement | One A Day - 3 Months Supply | from Griffonia Seed Extract | Vegan & UK Made

Nutrivo£9.614.4★368 rev

Solgar Griffonia 5-HTP Complex Sleep and Mood Support with Valerian Root Magnesium and Vitamin B6 - Vegan & Gluten Free - Pack of 30

Solgar£9.574.3★998 rev

Horbäach£8.404.6★92 rev

Lindens - 5 HTP 400mg 60 Tablets - 1-A-Day UK Made - 50mg Griffonia Simplicifolia Seed Extract 8:1 with Vitamin B5 - Mental Performance - Letterbox Friendly Vegan

Lindens£6.414.4★418 rev

5HXT Pro 5HTP High Strength Capsules from 4000mg 120 Vegan Capsules

Vivanta Nutrition£19.654.3★816 rev

Newest

by launch date

5HTP Tablets - 90 Tablets Per Pack | 5HTP High Strength Supplement | from Griffonia Seed Extract | 3 Months Supply | UK Made & Vegan

Nature's Army£7.9320 rev

5mo ago

Simple Science 5HTP High Strength 250mg Sleep Supplement + Vitamin B6 & B5

Simple Science£16.3746 rev

8mo ago

5HTP Capsules 5HTP High Strength 100mg Griffonia 120 Capsules

Nutriwow£12.84129 rev

9mo ago

Natural Griffonia Seed Extract Supplement 3 500mg Whole Seed Equivalent per Capsule (<30% 5-HTP) 90 Capsules - Made in The UK to The GMP Code of Practice

swiss bioenergetics£8.259 rev

10mo ago

Horbäach£8.4092 rev

1y ago

What buyers say about 5htp

What buyers praise and complain about, mined from review topics.

What buyers love

Sleep Quality18%

“Helps with sleep”

Quality-Overall9%

“Worth the spend good product”

Value For Money8%

“reasonable value for money”

Ease Of Chewing/Swallowing7%

“The capsules are a comfortable size to swallow”

Vitamin5%

“A good quality supplement”

Dosage5%

“can maintain a steady daily dose without running out quickly”

Ease Of Use4%

“Easy to take”

Stress/Anxiety4%

“Helps me relax”

Strength4%

“Effective”

Side Effects3%

“dont cause any unpleasant aftertaste or stomach discomfort”

What buyers complain about

Sleep Quality9%

“have found no improvement in helping me sleep”

Functionality-Overall9%

“I could barely function”

Side Effects7%

“Although I havent really noticed any benefit from taking this 5-HTP”

Value For Money5%

“these are actually a little cheaper”

Dosage5%

“400mg very small”

Size-Overall4%

“the tablets are small”

Acid Regulator/Stomach Ache Relief4%

“tummy ache”

Smell3%

“Slight smell to the capsules”

Quality-Overall3%

“Cheap and strong”

Pain Relief-Overall3%

“Buy with caution as it might cause you to also feel severe discomfort”

Common questions

Is 5htp profitable to sell on Amazon United Kingdom?: The niche generates £339K/yr across 13 tracked products. 0 of 4 products launched in the last 360 days are still selling. 90-day search growth is -17.2%. Flapen's verdict: Worth a look (53/100).
How competitive is the 5htp niche?: 12 brands and 23 sellers compete. The top 5 products take 71% of clicks and top 5 brands hold 78% of demand.
What do buyers complain about in 5htp?: Top complaints mined from reviews: Sleep Quality, Functionality-Overall, Side Effects. The return rate is 0.1%.
When does demand for 5htp peak?: Demand is steady year-round — the busiest month runs 1.3× the quietest.
What does it cost to enter the 5htp niche?: Listings span £6.41–£23.33; the average listing price is £13.10 (sweet spot $15–$100). The average incumbent carries 390 reviews — the moat a new listing must climb.