---
title: "Glycine Powder — £122K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/health-personal-care/glycine-powder"
last_updated: "2026-07-31T14:22:38.328Z"
locale: en
meta:
description: "Niche score 36/100 · £122K/yr market · 64K searches/yr · £9.32 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 36/100 · £122K/yr market · 64K searches/yr · £9.32 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Glycine Powder — £122K/yr Amazon UK Niche (2026) - Flapen"
---
# **glycine powder**
**Skip it**
Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Market size 28Growth 11Conversion 100Competition 7Returns 100Price range 21Avg price 28Brand share 0Review moat 70Quality gap 28
**Conversion**
**Incredible****20.4%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Incredible****0.1%**
return rate — above 5% kills the launch gate
**Review moat**
**Good****696.5**
avg incumbent reviews — the moat a new listing must climb
**Market size**
**Okay****£122K**
£122K/yr · 64K searches
**Quality gap**
**Okay****4.6★**
avg incumbent rating — lower means beatable quality
**Avg price**
**Okay****£9.32**
avg listing price — sweet spot $15–$100
**Price range**
**Bad****£3.97–£18.00**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Growth**
**Bad****-28.1%**
90-day search growth — must beat 0% to launch
**Competition**
**Bad****92%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United Kingdom niche tracking, glycine powder is a £122K/yr Amazon United Kingdom market (64K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 36/100.
Data updated Jul 24, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **glycine powder market data**
- **Units sold / yr**
- **10K–13K**
- avg 750–1,000/product
- **Revenue / yr**
- **£93K–£117K**
- units × avg price
- **Conversion rate**
- **20.4%**
- **Avg BSR**
- **#325**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **50%**
- **Out of stock**
- **19.5%**
- **Avg brand age**
- **44 months**
- **Avg seller age**
- **171 days**
## **Competition & brand share**
The top 5 products capture 92% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**5 **▼falling
**Sellers**
**7**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**92%**
Top 20: 100%
**Open market**
**0%**
- Bulk36% - Peak Supps25% - lalea21% - Vegavero14% - Hatton Hill3%
## **Demand**
Weekly Amazon search volume, last 12 weeks — -28.1% search growth over the last 90 days.
2K1KSpike '26May '26May '26May '26Jun '26Jun '26Jul '26
[**Open Trend **](https://flapen.com/research/uk/health-personal-care/glycine-powder/trend)
## **Top glycine powder search terms**
- **glycine powder**59K/yr-30.3%15.2% conv. - **glycine powder organic**3K/yr+17.9%9.8% conv. - **glycine powder 1kg**2K/yr-28.6%14.3% conv. [**All search terms **](https://flapen.com/research/uk/health-personal-care/glycine-powder/search-terms)
## **Top glycine powder 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%£12K20%£24K30%£37K40%£49K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 8 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Bulk Glycine Powder 500 g**Bulk**£3.97**4.6★822 rev](https://www.amazon.co.uk/dp/B00HF60S86) [2**LALEA Pure Glycine Powder 500g 100% Pure L-Glycine Amino Acid Supplement Vegan No Additives Highly Soluble Supports Sleep Muscle Recovery & Collagen Production**lalea**£8.07**4.5★306 rev](https://www.amazon.co.uk/dp/B0GP41YH62) [3**Glycine Powder | Pure L-Glycine | Vegan Friendly GMO Free (500g)**Peak Supps**£6.97**4.6★604 rev](https://www.amazon.co.uk/dp/B00NVDWJWK) [4**Vegavero Pure Glycine Powder 1 kg | 3000 mg Daily Dose | NO Additives Lab-Tested | Recovery Muscle & Collagen Synthesis | with Measuring Spoon | Vegan**Vegavero**£18.00**4.5★2,394 rev](https://www.amazon.co.uk/dp/B0BK8X47M5) [5**Glycine Powder 1Kg | Pure L-Glycine | Vegan Friendly GMO Free**Peak Supps**£12.39**4.6★604 rev](https://www.amazon.co.uk/dp/B00NVDWKQ0)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**LALEA Pure Glycine Powder 500g 100% Pure L-Glycine Amino Acid Supplement Vegan No Additives Highly Soluble Supports Sleep Muscle Recovery & Collagen Production**lalea**£8.07**306 rev5mo ago](https://www.amazon.co.uk/dp/B0GP41YH62) [**Vegavero Pure Glycine Powder 300 g | 3000 mg Daily Dose | NO Additives Lab-Tested | Recovery Muscle & Collagen Synthesis | with Measuring Spoon | Vegan**Vegavero**£11.91**222 rev1y ago](https://www.amazon.co.uk/dp/B0DQDRRFPF) [**Glycine Powder 500g Pure Amino Acid Supplement for Sleep Muscle Recovery and Anti-Aging 100% Vegan Non-GMO by Hatton Hill**Hatton Hill**£8.13**16 rev2y ago](https://www.amazon.co.uk/dp/B0CQCYYNZ6) [**Vegavero Pure Glycine Powder 1 kg | 3000 mg Daily Dose | NO Additives Lab-Tested | Recovery Muscle & Collagen Synthesis | with Measuring Spoon | Vegan**Vegavero**£18.00**2,394 rev3y ago](https://www.amazon.co.uk/dp/B0BK8X47M5) [**Glycine Powder | Pure L-Glycine | Vegan Friendly GMO Free (500g)**Peak Supps**£6.97**604 rev11y ago](https://www.amazon.co.uk/dp/B00NVDWJWK)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**LALEA Pure Glycine Powder 500g 100% Pure L-Glycine Amino Acid Supplement Vegan No Additives Highly Soluble Supports Sleep Muscle Recovery & Collagen Production**lalea**£8.07**4.5★**▲ 259%**](https://www.amazon.co.uk/dp/B0GP41YH62) [**Bulk Glycine Powder 500 g**Bulk**£3.97**4.6★**▲ 20%**](https://www.amazon.co.uk/dp/B00HF60S86) [**Glycine Powder 500g Pure Amino Acid Supplement for Sleep Muscle Recovery and Anti-Aging 100% Vegan Non-GMO by Hatton Hill**Hatton Hill**£8.13**4.8★**▼ 22%**](https://www.amazon.co.uk/dp/B0CQCYYNZ6) [**Glycine Powder 1Kg | Pure L-Glycine | Vegan Friendly GMO Free**Peak Supps**£12.39**4.6★**▼ 26%**](https://www.amazon.co.uk/dp/B00NVDWKQ0) [**Vegavero Pure Glycine Powder 1 kg | 3000 mg Daily Dose | NO Additives Lab-Tested | Recovery Muscle & Collagen Synthesis | with Measuring Spoon | Vegan**Vegavero**£18.00**4.5★**▼ 28%**](https://www.amazon.co.uk/dp/B0BK8X47M5)
**~~View all trending →~~**
## **What buyers say about glycine powder**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Sleep Quality**23%
*“Helps me sleep better”*
**Taste-Overall**9%
*“Tastes nice as well”*
**Quality-Overall**8%
*“Good quality product”*
**Value For Money**8%
*“Good deal”*
**Solubility**6%
*“Mixes easily”*
**Sweetness**5%
*“The taste is naturally sweet and pleasant”*
**Vegan/Organic**5%
*“The vegan tag is handy too”*
**Ingredients-Overall**4%
*“Good ingredients at decent strengths and good value”*
**Ease Of Use**3%
*“found it straightforward to take”*
**Soothing Effect**3%
*“it does have a calming feel”*
### **What buyers complain about **
**Sleep Quality**13%
*“Im not an expert just historically a very poor sleeper”*
**Side Effects**9%
*“It did make me tired about two hours after taking it”*
**Functionality-Overall**8%
*“Not sure its working but will keep taking for a while”*
**Quality-Overall**6%
*“Bad quality”*
**Advertised Vs Actual Product**5%
*“Vegavero claim in their photo that it is 'MADE IN GERMANY' - that is incorrect”*
**Size-Overall**5%
*“the scoop was teeny tiny in comparison”*
**Focus Enhancement**4%
*“Not for an over active mind”*
**Dosage**3%
*“I dont even know how to accurately measure the daily dose with mistakes as it stands”*
**Flavor**2%
*“* Taste may not suit everyone despite the mild sweetness”*
**Taste-Overall**2%
*“This one has zero taste”*
### **Top return reasons **
**Ease Of Use**100%
## **Common questions**
- **Is glycine powder profitable to sell on Amazon United Kingdom?**
- The niche generates £122K/yr across 8 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -28.1%. Flapen's verdict: Skip it (36/100).
- **How competitive is the glycine powder niche?**
- 5 brands and 7 sellers compete. The top 5 products take 92% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in glycine powder?**
- Top complaints mined from reviews: Sleep Quality, Side Effects, Functionality-Overall. The return rate is 0.1%.
- **What does it cost to enter the glycine powder niche?**
- Listings span £3.97–£18.00; the average listing price is £9.32 (sweet spot $15–$100). The average incumbent carries 697 reviews — the moat a new listing must climb.
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