---
title: "5htp — £339K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/health-personal-care/5htp"
last_updated: "2026-07-31T15:35:42.520Z"
locale: en
meta:
description: "Niche score 53/100 · £339K/yr market · 200K searches/yr · £13.10 avg price. Soft demand (-17.2% this quarter) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 53/100 · £339K/yr market · 200K searches/yr · £13.10 avg price. Soft demand (-17.2% this quarter) keeps it on the watch list. Data updated Jul 2026."
"og:title": "5htp — £339K/yr Amazon UK Niche (2026) - Flapen"
---
# **5htp**
**Worth a look**
Shows low returns (0.1%), but soft demand (-17.2% this quarter) keeps it on the watch list.
Market size 53Growth 16Conversion 96Competition 24Returns 100Price range 49Avg price 59Brand share 45Review moat 81Quality gap 55
**Returns**
**Incredible****0.1%**
return rate — above 5% kills the launch gate
**Conversion**
**Incredible****12.9%**
search→purchase rate — share of searches ending in a sale
**Review moat**
**Great****389.77**
avg incumbent reviews — the moat a new listing must climb
**Avg price**
**Good****£13.10**
avg listing price — sweet spot $15–$100
**Quality gap**
**Good****4.4★**
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**
**Okay****78%**
top-5 brand share — brands hold most of the demand
**Competition**
**Bad****71%**
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**](https://flapen.com/research/niches?market=uk&signal=low_review_barrier "Top brand's reviews < 500")
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 ~~](https://flapen.com/research/methodology)
## **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**
**23**
**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.
7K5K seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.3×
[**Open Trend **](https://flapen.com/research/uk/health-personal-care/5htp/trend)
## **Top 5htp search terms**
- **5htp**88K/yr-14.3%11.8% conv. - **5 htp**41K/yr-16.1%10.3% conv. - **5-htp**22K/yr-14.1%9.7% conv. - **5htp high strength 1000mg**18K/yr-24.0%13.4% conv. - **5 htp supplement high strength**10K/yr-27.4%10.3% conv. - **htp 5 high strength**6K/yr-11.3%9.7% conv. - **htp 5**4K/yr-18.7%7.5% conv. - **5htp high strength**4K/yr-24.4%9.6% conv. - **griffonia 5-htp complex**4K/yr-34.9%16.2% conv. - **5-htp supplement**3K/yr-32.6%11.2% conv. [**All search terms **](https://flapen.com/research/uk/health-personal-care/5htp/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.
0%10%£34K20%£68K30%£102K40%£135K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
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
[1**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**£9.61**4.4★368 rev](https://www.amazon.co.uk/dp/B0DNMHB7JW) [2**Solgar Griffonia 5-HTP Complex Sleep and Mood Support with Valerian Root Magnesium and Vitamin B6 - Vegan & Gluten Free - Pack of 30**Solgar**£9.57**4.3★998 rev](https://www.amazon.co.uk/dp/B001H8J8HK) [3**5HTP Supplement High Strength | 180 Vegan Tablets | 6 Month Supply - One A Day | from Griffonia Seed Extract | with Vitamin B5 | By Horbaach**Horbäach**£8.40**4.6★92 rev](https://www.amazon.co.uk/dp/B0FHB7GFPT) [4**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**£6.41**4.4★418 rev](https://www.amazon.co.uk/dp/B00HXIIF1S) [5**5HXT Pro 5HTP High Strength Capsules from 4000mg 120 Vegan Capsules**Vivanta Nutrition**£19.65**4.3★816 rev](https://www.amazon.co.uk/dp/B00LAJ9FMO)
**~~View all top sellers →~~**
### **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**£7.93**20 rev5mo ago](https://www.amazon.co.uk/dp/B0GP8D1BNQ) [**Simple Science 5HTP High Strength 250mg Sleep Supplement + Vitamin B6 & B5**Simple Science**£16.37**46 rev8mo ago](https://www.amazon.co.uk/dp/B0FZBWTXYV) [**5HTP Capsules 5HTP High Strength 100mg Griffonia 120 Capsules**Nutriwow**£12.84**129 rev9mo ago](https://www.amazon.co.uk/dp/B0FT8HC6Y5) [**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**£8.25**9 rev10mo ago](https://www.amazon.co.uk/dp/B0FRHC2XZ1) [**5HTP Supplement High Strength | 180 Vegan Tablets | 6 Month Supply - One A Day | from Griffonia Seed Extract | with Vitamin B5 | By Horbaach**Horbäach**£8.40**92 rev1y ago](https://www.amazon.co.uk/dp/B0FHB7GFPT)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**5HTP Tablets - 90 Tablets Per Pack | 5HTP High Strength Supplement | from Griffonia Seed Extract | 3 Months Supply | UK Made & Vegan**Nature's Army**£7.93**4.3★**▲ 276%**](https://www.amazon.co.uk/dp/B0GP8D1BNQ) [**5HTP Capsules 5HTP High Strength 100mg Griffonia 120 Capsules**Nutriwow**£12.84**4.3★**▲ 159%**](https://www.amazon.co.uk/dp/B0FT8HC6Y5) [**Simple Science 5HTP High Strength 250mg Sleep Supplement + Vitamin B6 & B5**Simple Science**£16.37**4.4★**▲ 34%**](https://www.amazon.co.uk/dp/B0FZBWTXYV) [**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**£8.25**4.6★**▲ 21%**](https://www.amazon.co.uk/dp/B0FRHC2XZ1) [**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**£9.61**4.4★**— 1%**](https://www.amazon.co.uk/dp/B0DNMHB7JW)
**~~View all trending →~~**
## **What buyers say about 5htp**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Sleep Quality**18%
*“Helps with sleep”*
**Quality-Overall**9%
*“Worth the spend good product”*
**Value For Money**8%
*“reasonable value for money”*
**Ease Of Chewing/Swallowing**7%
*“The capsules are a comfortable size to swallow”*
**Vitamin**5%
*“A good quality supplement”*
**Dosage**5%
*“can maintain a steady daily dose without running out quickly”*
**Ease Of Use**4%
*“Easy to take”*
**Stress/Anxiety**4%
*“Helps me relax”*
**Strength**4%
*“Effective”*
**Side Effects**3%
*“dont cause any unpleasant aftertaste or stomach discomfort”*
### **What buyers complain about **
**Sleep Quality**9%
*“have found no improvement in helping me sleep”*
**Functionality-Overall**9%
*“I could barely function”*
**Side Effects**7%
*“Although I havent really noticed any benefit from taking this 5-HTP”*
**Value For Money**5%
*“these are actually a little cheaper”*
**Dosage**5%
*“400mg very small”*
**Size-Overall**4%
*“the tablets are small”*
**Acid Regulator/Stomach Ache Relief**4%
*“tummy ache”*
**Smell**3%
*“Slight smell to the capsules”*
**Quality-Overall**3%
*“Cheap and strong”*
**Pain Relief-Overall**3%
*“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.
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