---
title: "Lysine — £458K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/health-personal-care/lysine"
last_updated: "2026-07-31T15:11:50.599Z"
locale: en
meta:
description: "Niche score 43/100 · £458K/yr market · 283K searches/yr · £8.28 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 43/100 · £458K/yr market · 283K searches/yr · £8.28 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Lysine — £458K/yr Amazon UK Niche (2026) - Flapen"
---
# **lysine**
**Skip it**
Prices mostly outside the sweet spot ($5.19–$14.12) — this niche doesn't clear our bar today.
Market size 58Growth 19Conversion 100Competition 8Returns 100Price range 0Avg price 23Brand share 25Review moat 42Quality gap 45
**Conversion**
**Incredible****19.5%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Incredible****0.1%**
return rate — above 5% kills the launch gate
**Market size**
**Good****£458K**
£458K/yr · 283K searches
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Okay****2,316.63**
avg incumbent reviews — the moat a new listing must climb
**Brand share**
**Bad****90%**
top-5 brand share — brand-locked demand
**Avg price**
**Bad****£8.28**
avg listing price — sweet spot $15–$100
**Growth**
**Bad****-12.1%**
90-day search growth — must beat 0% to launch
**Competition**
**Bad****90%**
top-5 click share — a locked-up shelf
**Price range**
**Bad****£5.19–£14.12**
cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United Kingdom niche tracking, lysine is a £458K/yr Amazon United Kingdom market (283K searches/yr). The top 5 brands hold 90% of demand. Verdict: Skip it — 43/100.
Data updated Jul 25, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **lysine market data**
- **Units sold / yr**
- **50K–60K**
- avg 6,000–8,000/product
- **Revenue / yr**
- **£414K–£497K**
- units × avg price
- **Conversion rate**
- **19.5%**
- **Avg BSR**
- **#5**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **75%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **61 months**
- **Avg seller age**
- **170 days**
## **Competition & brand share**
The top 5 products capture 90% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**8 **▼falling
**Sellers**
**28**
**Top-5 brand share**
**90%**
Top 20: 100%
**Top-5 click share**
**90%**
Top 20: 100%
**Open market**
**6%**
- Natures Aid41% - NEW LEAF PRODUCTS28% - Solgar10% - Best Naturals7% - Carlyle4% - Horbäach4% - Open — no brand owns it (2 brands, 6%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -12.1% search growth over the last 90 days.
13K8KSpike '24Holiday '24Spike '25 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.5×
[**Open Trend **](https://flapen.com/research/uk/health-personal-care/lysine/trend)
## **Top lysine search terms**
- **lysine**85K/yr-9.4%16.3% conv. - **lysine tablets**51K/yr-17.2%20.3% conv. - **l lysine**38K/yr-2.6%15.6% conv. - **l-lysine**32K/yr+0.2%15.0% conv. - **cold sore tablets**12K/yr-9.4%4.0% conv. - **l lysine capsules 2000mg**14K/yr-9.1%18.0% conv. - **l lysine capsules 1000mg**10K/yr-5.9%16.1% conv. - **lysine for cold sores**10K/yr-42.6%9.7% conv. - **l-lysine 1000mg tablets**7K/yr-32.4%19.5% conv. - **l-lysine nutritional supplements**6K/yr-30.3%10.9% conv. [**All search terms **](https://flapen.com/research/uk/health-personal-care/lysine/search-terms)
## **Top lysine 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%15%£69K30%£137K45%£206K60%£275K1001K10K 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**Natures Aid L-Lysine 1000mg High Strength Essential Amino Acid Supports Immune System Muscle Recovery Collagen Bone Health & Energy Vegan Gluten-Free - 60 Tablets**Natures Aid**£5.87**4.5★4,592 rev](https://www.amazon.co.uk/dp/B004YJRM68) [2**L-Lysine Tablets 2000mg - High Strength Lysine Nutritional Supplements - Essential Amino Acid L Lysine - 120 Vegan Lysine Tablets 2 Month Supply Made in The UK By New Leaf**NEW LEAF PRODUCTS**£8.11**4.5★474 rev](https://www.amazon.co.uk/dp/B0DNT4R29G) [3**Solgar L-Lysine 1000 mg Tablets - Pack of 50 - Support for an Active Lifestyle - Vegan and Gluten Free**Solgar**£7.23**4.5★5,957 rev](https://www.amazon.co.uk/dp/B000Z92AWC) [4**Best Naturals L-Lysine 1000 mg 180 Tablets**Best Naturals**£9.97**4.6★5,718 rev](https://www.amazon.co.uk/dp/B00HZO3MV8) [5**L-Lysine 2950mg | 90 Tablets | Essential Amino Acid | High Strength Vegan Supplement | by Carlyle**Carlyle**£5.19**4.5★204 rev](https://www.amazon.co.uk/dp/B0CJ5L7NK4)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**L-Lysine Tablets 2000mg - High Strength Lysine Nutritional Supplements - Essential Amino Acid L Lysine - 120 Vegan Lysine Tablets 2 Month Supply Made in The UK By New Leaf**NEW LEAF PRODUCTS**£8.11**474 rev1y ago](https://www.amazon.co.uk/dp/B0DNT4R29G) [**L-Lysine 2950mg | 90 Tablets | Essential Amino Acid | High Strength Vegan Supplement | by Carlyle**Carlyle**£5.19**204 rev2y ago](https://www.amazon.co.uk/dp/B0CJ5L7NK4) [**Nutravita L-Lysine 1100mg High Strength - 240 Vegan & Gluten Free Tablets (8 Month Supply) - Cold Sore Treatment Essential Amino Acid Supplement - Normal Growth and Muscle Turnover - Made in The UK**Nutravita**£14.12**899 rev5y ago](https://www.amazon.co.uk/dp/B08L6T9KS7) [**L-Lysine 2950mg | 120 Tablets | Essential Amino Acid | Premium Supplement | Vegan & Vegetarian | By Horbaach**Horbäach**£8.39**510 rev5y ago](https://www.amazon.co.uk/dp/B08JQ16SVK) [**Fermented L-Lysine 1500mg with BioPerine - Made with Vitamin C - High Strength - 120 Vegan Capsules Resealable and Recyclable Pouch By Alpha01**ALPHA01**£7.35**179 rev7y ago](https://www.amazon.co.uk/dp/B0971JVCMJ)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Natures Aid L-Lysine 1000mg High Strength Essential Amino Acid Supports Immune System Muscle Recovery Collagen Bone Health & Energy Vegan Gluten-Free - 60 Tablets**Natures Aid**£5.87**4.5★**▲ 12%**](https://www.amazon.co.uk/dp/B004YJRM68) [**Solgar L-Lysine 1000 mg Tablets - Pack of 50 - Support for an Active Lifestyle - Vegan and Gluten Free**Solgar**£7.23**4.5★**— 9%**](https://www.amazon.co.uk/dp/B000Z92AWC) [**L-Lysine Tablets 2000mg - High Strength Lysine Nutritional Supplements - Essential Amino Acid L Lysine - 120 Vegan Lysine Tablets 2 Month Supply Made in The UK By New Leaf**NEW LEAF PRODUCTS**£8.11**4.5★**— 2%**](https://www.amazon.co.uk/dp/B0DNT4R29G) [**Fermented L-Lysine 1500mg with BioPerine - Made with Vitamin C - High Strength - 120 Vegan Capsules Resealable and Recyclable Pouch By Alpha01**ALPHA01**£7.35**4.6★**— 1%**](https://www.amazon.co.uk/dp/B0971JVCMJ) [**L-Lysine 2950mg | 90 Tablets | Essential Amino Acid | High Strength Vegan Supplement | by Carlyle**Carlyle**£5.19**4.5★**— 3%**](https://www.amazon.co.uk/dp/B0CJ5L7NK4)
**~~View all trending →~~**
## **What buyers say about lysine**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Cold Relief**31%
*“Helps combat Coldsores”*
**Quality-Overall**11%
*“Excellent product”*
**Value For Money**8%
*“Competitive price”*
**Ease Of Chewing/Swallowing**8%
*“didn't cause any issues in swallowing”*
**Advertised Vs Actual Product**5%
*“As described”*
**Efficiency**5%
*“Very effective”*
**Vitamin**4%
*“Effective supplement”*
**Side Effects**3%
*“Extremely effective against cold sores”*
**Taste-Overall**2%
*“you will find they have a nice seeet taste”*
**Fever Relief**2%
*“Effective for my Coldsores”*
### **What buyers complain about **
**Size-Overall**31%
*“Quite a large tablet”*
**Ease Of Chewing/Swallowing**12%
*“Can't swallow like putting massive bricks down Ur throat”*
**Dosage**5%
*“would of been better if the dosage were split into 3 pills so the pills aren't so huge impossible to swallow”*
**Allergies**4%
*“when I woke up with what promised to be a HUGE cold sore”*
**Smell**3%
*“Horrible smell”*
**Oral Hygiene**3%
*“Ginormous Tablets, got stuck in my throat, trying to swallow them, wont be trying again”*
**Side Effects**3%
*“I have only been taking them for a few days so don't know the effects yet”*
**Skin Health**2%
*“It works for me very itchy skin”*
**Taste-Overall**2%
*“they are tasteless”*
**Stuck/Fused Together**2%
*“if you break them in half they get stuck”*
## **Common questions**
- **Is lysine profitable to sell on Amazon United Kingdom?**
- The niche generates £458K/yr across 8 tracked products. 90-day search growth is -12.1%. Flapen's verdict: Skip it (43/100).
- **How competitive is the lysine niche?**
- 8 brands and 28 sellers compete. The top 5 products take 90% of clicks and top 5 brands hold 90% of demand.
- **What do buyers complain about in lysine?**
- Top complaints mined from reviews: Size-Overall, Ease Of Chewing/Swallowing, Dosage. The return rate is 0.1%.
- **When does demand for lysine peak?**
- Demand is steady year-round — the busiest month runs 1.5× the quietest.
- **What does it cost to enter the lysine niche?**
- Listings span £5.19–£14.12; the average listing price is £8.28 (sweet spot $15–$100). The average incumbent carries 2,317 reviews — the moat a new listing must climb.
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