---
title: "Lysine — $578K/mo Amazon US Product Research (2026)"
canonical_url: "https://flapen.com/research/us/health-household/lysine"
last_updated: "2026-08-12T15:04:50.926Z"
locale: en
meta:
description: "Amazon product research for lysine: $578K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:description": "Amazon product research for lysine: $578K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:title": "Lysine — $578K/mo Amazon US Product Research (2026)"
---
# **Lysine**
**Worth a look**
Shows low returns (0.0%), but a concentrated shelf (top 5 take 76% of clicks) keeps it on the watch list.
Market size 99Growth 24Conversion 99Competition 20Returns 100Price range 74Avg price 77Brand share 35Review moat 21Quality gap 21
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Market size**
**Incredible****$6.9M**
$6.9M/yr · 2.4M searches
**Conversion**
**Incredible****18.6%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Great****$15.62**
avg listing price — sweet spot $15–$100
**Price range**
**Good****$6.46–$39.41**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Okay****84%**
top-5 brand share — brands hold most of the demand
**Growth**
**Bad****-2.8%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Bad****10,535.13**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Bad****76%**
top-5 click share — a locked-up shelf
## **Is lysine profitable on Amazon?**
According to Flapen's Amazon United States niche tracking, lysine is a $6.9M/yr Amazon United States market (2.4M searches/yr). The top 5 brands hold 84% of demand. Demand peaks in Dec. Verdict: Worth a look — 55/100.
Data updated Jul 25, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **lysine market size & sales**
Units sold, revenue, conversion and listing quality across the tracked shelf.
- **Units sold / yr**
- **400K–500K**
- avg 30,000–40,000/product
- **Revenue / yr**
- **$6.2M–$7.8M**
- units × avg price
- **Conversion rate**
- **18.6%**
- **Avg BSR**
- **#89**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **87%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **72 months**
- **Avg seller age**
- **157 days**
## **Competition: brands, sellers & click share**
The top 5 products capture 76% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**10 **▼falling
**Sellers**
**560**
**Top-5 brand share**
**84%**
Top 20: 100%
**Top-5 click share**
**76%**
Top 20: 100%
**Open market**
**11%**
- NOW Foods32% - Pure Encapsulations23% - Nature Made14% - Bronson11% - Nutricost5% - THORNE5% - Open — no brand owns it (4 brands, 11%)
## **lysine demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -2.8% search growth over the last 90 days.
150K100KSpike '24Holiday '24Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Dec · busiest ÷ quietest = 1.6×
[**Open Trend **](https://flapen.com/research/us/health-household/lysine/trend)
## **Top lysine search terms shoppers use**
The exact queries shoppers type, with yearly volume, growth and conversion.
- **lysine**920K/yr-7.1%15.6% conv. - **l lysine**402K/yr+9.3%13.6% conv. - **l-lysine**283K/yr+6.1%12.1% conv. - **lysine 1000mg capsules**279K/yr-3.2%16.8% conv. - **l lysine 1000mg capsules**136K/yr+4.3%15.3% conv. - **l-lysine 1000mg capsules**83K/yr-4.4%14.3% conv. - **lysine supplement**106K/yr-34.5%11.4% conv. - **llysine**27K/yr+13.8%14.0% conv. - **lysine capsules**24K/yr+4.3%5.9% conv. - **lisina**22K/yr-12.4%3.0% conv. [**All search terms **](https://flapen.com/research/us/health-household/lysine/search-terms)
## **Top lysine products & what they sell for**
Every tracked product — its share of the shelf, its review moat, and what it sells for.
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%10%$693K20%$1.4M30%$2.1M40%$2.8M1001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 15 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**NOW Foods Supplements (L-Lysine Hydrochloride) 1 000 mg Double Strength Amino Acid 100 Tablets**NOW Foods**$8.44**4.6★38,103 rev](https://www.amazon.com/dp/B000Z9361G) [2**Pure Encapsulations L-Lysine - Essential Amino Acid Supplement for Immune Support & Gum Lip Health* - with L-Lysine HCl - 90 Capsules**Pure Encapsulations**$14.85**4.8★5,688 rev](https://www.amazon.com/dp/B000H85JYC) [3**Nature Made L-Lysine 1000 mg Dietary L-Lysine Supplements 60 Tablets 60 Day Supply**Nature Made**$6.46**4.6★12,920 rev](https://www.amazon.com/dp/B0000DJAR5) [4**Bronson L-Lysine Defense Immune Support Complex 1500 MG L-Lysine Plus Olive Leaf Garlic Vitamin C and Zinc - Non-GMO 90 Vegetarian Capsules**Bronson**$9.88**4.7★6,618 rev](https://www.amazon.com/dp/B08B8W6BRK) [5**THORNE - Lysine - Supports Immune Skin & Bone Health - Promotes Collagen Formation* - L-Lysine Amino Acid Supplement - Third-Party Certified - Gluten Dairy & Soy-Free - 60 Capsules**THORNE**$14.52**4.7★1,865 rev](https://www.amazon.com/dp/B0797H8HC5)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Pure L-Lysine 2 000mg 300 Veggie Capsules | Maximum Potency Easily Absorbed Free Form | Essential Amino Acid for Collagen Lip & Immune Support | Clean Ingredients Without Fillers**Micro Ingredients**$17.12**515 rev1y ago](https://www.amazon.com/dp/B0DVM9M4DS) [**Bronson L-Lysine Extra Strength 1000 MG per Tablet High Potency Immune Support & Supports Collagen Synthesis Non-GMO 100 Vegetarian Tablets**Bronson**$10.02**1,698 rev3y ago](https://www.amazon.com/dp/B0B1N97FQJ) [**Bronson L-Lysine Defense Immune Support Complex 1500 MG L-Lysine Plus Olive Leaf Garlic Vitamin C and Zinc - Non-GMO 90 Vegetarian Capsules**Bronson**$9.88**6,618 rev6y ago](https://www.amazon.com/dp/B08B8W6BRK) [**Nutricost L-Lysine 1000mg 250 Capsules - 500mg Per Cap Gluten Free Non-GMO**Nutricost**$14.75**7,057 rev8y ago](https://www.amazon.com/dp/B01CV1FFSM) [**NOW Foods Supplements L-Lysine (L-Lysine Hydrochloride) 1 000 mg Double Strength Amino Acid 250 Tablets**NOW Foods**$18.43**38,103 rev8y ago](https://www.amazon.com/dp/B0768HGMBY)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Pure Encapsulations L-Lysine - Essential Amino Acid Supplement for Immune Support & Gum Lip Health* - with L-Lysine HCl - 90 Capsules**Pure Encapsulations**$14.85**4.8★**▲ 69%**](https://www.amazon.com/dp/B000H85JYC) [**Nutricost L-Lysine 1000mg 250 Capsules - 500mg Per Cap Gluten Free Non-GMO**Nutricost**$14.75**4.7★**▲ 25%**](https://www.amazon.com/dp/B01CV1FFSM) [**THORNE - Lysine - Supports Immune Skin & Bone Health - Promotes Collagen Formation* - L-Lysine Amino Acid Supplement - Third-Party Certified - Gluten Dairy & Soy-Free - 60 Capsules**THORNE**$14.52**4.7★**▲ 22%**](https://www.amazon.com/dp/B0797H8HC5) [**Bronson L-Lysine Extra Strength 1000 MG per Tablet High Potency Immune Support & Supports Collagen Synthesis Non-GMO 100 Vegetarian Tablets**Bronson**$10.02**4.6★**▲ 16%**](https://www.amazon.com/dp/B0B1N97FQJ) [**NOW Foods Supplements L-Lysine (L-Lysine Hydrochloride) 1 000 mg Double Strength Amino Acid 250 Tablets**NOW Foods**$18.43**4.6★**▲ 15%**](https://www.amazon.com/dp/B0768HGMBY)
**~~View all trending →~~**
## **What reviews say buyers love and hate about lysine**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**17%
*“Good quality and trusted brand”*
**Value For Money**10%
*“Great value”*
**Efficiency**10%
*“Works fast and well”*
**Cold Relief**8%
*“Super Effective for Cold Sores”*
**Vitamin**5%
*“Great vitamin supplement”*
**Advertised Vs Actual Product**5%
*“exactly as advertised”*
**Fever Relief**4%
*“Keeps fever blisters away”*
**Immunity Booster**4%
*“boost my immune system”*
**Ease Of Chewing/Swallowing**3%
*“Im able to swallow without choking”*
**Skin Health**3%
*“Has helped clear my acne”*
### **What buyers complain about **
**Size-Overall**22%
*“Tablets are rather large”*
**Ease Of Chewing/Swallowing**8%
*“Not sure it will get into mouth”*
**Dosage**7%
*“They don't do well in the bottle”*
**Functionality-Overall**6%
*“It didnt help”*
**Value For Money**4%
*“waste of money”*
**Allergies**4%
*“Found out I had an allergic reaction to this supplement”*
**Pain Relief-Overall**3%
*“pain behind my eyes”*
**Ingredients-Overall**2%
*“Without checking the ingredients i ordered this”*
**Side Effects**2%
*“As well as caused stomach upset”*
**Ease Of Use**2%
*“were too difficult for me to swallow”*
### **Top return reasons **
**Functionality-Overall**29%
**Advertised Vs Actual Product**20%
**Value For Money**12%
**Size-Overall**6%
**Ingredients-Overall**5%
**Smell**5%
**Ease Of Chewing/Swallowing**4%
**Vegan/Organic**2%
**Defective Material/Parts**2%
**Suitability Hot Weather**2%
## **Common lysine questions**
- **Is lysine profitable to sell on Amazon United States?**
- The niche generates $6.9M/yr across 15 tracked products. 90-day search growth is -2.8%. Flapen's verdict: Worth a look (55/100).
- **How competitive is the lysine niche?**
- 10 brands and 560 sellers compete. The top 5 products take 76% of clicks and top 5 brands hold 84% 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 0.0%.
- **When does demand for lysine peak?**
- Demand peaks in Dec; the busiest month runs 1.6× the quietest.
- **What does it cost to enter the lysine niche?**
- Listings span $6.46–$39.41; the average listing price is $15.62 (sweet spot $15–$100). The average incumbent carries 10,535 reviews — the moat a new listing must climb.
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