---
title: "Lysine Gel for Cats — $102K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/pet-supplies/lysine-gel-for-cats"
last_updated: "2026-07-22T21:42:52.540Z"
locale: en
meta:
description: "Niche score 42/100 · $102K/yr market · 19K searches/yr · $19.36 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 42/100 · $102K/yr market · 19K searches/yr · $19.36 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Lysine Gel for Cats — $102K/yr Amazon US Niche (2026) - Flapen"
---
# **lysine gel for cats**
**Skip it**
Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Market size 25Growth 17Conversion 100Competition 3Returns 100Price range 73Avg price 86Brand share 0Review moat 28Quality gap 62
**Conversion**
**Incredible****28.0%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Incredible****0.0%**
return rate — above 6% kills the launch gate
**Avg price**
**Great****$19.36**
avg listing price — sweet spot $15–$100
**Price range**
**Good****$7.60–$34.86**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Okay****3,722.67**
avg incumbent reviews — the moat a new listing must climb
**Market size**
**Okay****$102K**
$102K/yr · 19K searches
**Growth**
**Bad****-15.2%**
90-day search growth — must beat 0% to launch
**Competition**
**Bad****97%**
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 States niche tracking, lysine gel for cats is a $102K/yr Amazon United States market (19K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 42/100.
Data updated Jul 9, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **lysine gel for cats market data**
- **Units sold / yr**
- **3K–4K**
- avg 500–750/product
- **Revenue / yr**
- **$58K–$77K**
- units × avg price
- **Launch success**
- **—**
- 1 of 1 new (360d)
- **Conversion rate**
- **28.0%**
- **Avg BSR**
- **#285**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **83%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **69 months**
- **Avg seller age**
- **169 days**
## **Competition & brand share**
The top 5 products capture 97% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**5 **—flat
**Sellers**
**35**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**97%**
Top 20: 100%
**Open market**
**0%**
- Felisyl66% - Vetoquinol21% - Jollyfit6% - Quantum4% - Pet Health Solutions3%
## **Demand**
Weekly Amazon search volume, last 40 weeks — -15.2% search growth over the last 90 days.
500300Spike '26Oct '25Nov '25Dec '25Feb '26Mar '26May '26Jun '26
[**Open Trend **](https://flapen.com/research/us/pet-supplies/lysine-gel-for-cats/trend)
## **Top lysine gel for cats search terms**
- **felisyl l-lysine gel for cats**5K/yr+1.0%24.9% conv. - **lysine gel for cats**6K/yr-19.1%13.4% conv. - **lysine gel**4K/yr-18.4%6.2% conv. - **felisyl**4K/yr-24.2%18.8% conv. [**All search terms **](https://flapen.com/research/us/pet-supplies/lysine-gel-for-cats/search-terms)
## **Top lysine gel for cats 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%20%$20K40%$41K60%$61K80%$82K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 6 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Felisyl L-Lysine Gel for Cats & Kittens (5oz) Immune System Respiratory & Eye Health Support. Reduces Sneezing Runny Nose & Watery Eyes. Daily Salmon-Flavor Supplement Made in USA (1 Pack)**Felisyl**$18.29**4.4★2,212 rev](https://www.amazon.com/dp/B00MO9SHBE) [2**Vetoquinol Viralys - Lysine Supplement for Cats & Kittens - Supports Eye Wellness Respiratory Health & Immune Strength - Flavored Oral Gel for Easy Feeding & Daily Use for Picky Eaters - 5oz**Vetoquinol**$24.49**4.5★11,209 rev](https://www.amazon.com/dp/B00AMEBH06) [3**L-Lysine for Cats Oral Paste Immune & Respiratory Support for Felines with Collagen Zinc Multivitamins & Probiotics Natural Chicken Flavor 4.23 oz (Orange 1 Pack)**Jollyfit**$14.51**4.2★91 rev](https://www.amazon.com/dp/B0FZT61RTK) [4**Felisyl L-Lysine Gel for Cats & Kittens (5oz) Immune System Respiratory & Eye Health Support. Reduces Sneezing Runny Nose & Watery Eyes. Daily Salmon-Flavor Supplement Made in USA (2 Pack)**Felisyl**$34.86**4.4★2,212 rev](https://www.amazon.com/dp/B0DLPWPBCL) [5**Quantum Health Lip Clear Lysine+ Cold Sore Treatment Soothe & Moisturize Mouth Sores - L-Lysine Menthol Calendula & Propolis Ointment - Transparent Fever Blister Healing Balm - 0.25 Oz**Quantum**$7.60**4.6★5,884 rev](https://www.amazon.com/dp/B00014EGA0)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**L-Lysine for Cats Oral Paste Immune & Respiratory Support for Felines with Collagen Zinc Multivitamins & Probiotics Natural Chicken Flavor 4.23 oz (Orange 1 Pack)**Jollyfit**$14.51**91 rev8mo ago](https://www.amazon.com/dp/B0FZT61RTK) [**Felisyl L-Lysine Gel for Cats & Kittens (5oz) Immune System Respiratory & Eye Health Support. Reduces Sneezing Runny Nose & Watery Eyes. Daily Salmon-Flavor Supplement Made in USA (2 Pack)**Felisyl**$34.86**2,212 rev4y ago](https://www.amazon.com/dp/B0DLPWPBCL) [**Felisyl L-Lysine Gel for Cats & Kittens (5oz) Immune System Respiratory & Eye Health Support. Reduces Sneezing Runny Nose & Watery Eyes. Daily Salmon-Flavor Supplement Made in USA (1 Pack)**Felisyl**$18.29**2,212 rev12y ago](https://www.amazon.com/dp/B00MO9SHBE) [**Felisyl L-Lysine Granules for Cats 100g (3.5 oz 310 Servings) Supports Immune Respiratory and Eye Health. Eases Sneezing Runny Nose and Watery Eyes. Tasty Salmon Flavor - Made in The USA**Pet Health Solutions**$16.39**728 rev17y ago](https://www.amazon.com/dp/B004OA5ZLG) [**Vetoquinol Viralys - Lysine Supplement for Cats & Kittens - Supports Eye Wellness Respiratory Health & Immune Strength - Flavored Oral Gel for Easy Feeding & Daily Use for Picky Eaters - 5oz**Vetoquinol**$24.49**11,209 rev20y ago](https://www.amazon.com/dp/B00AMEBH06)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**L-Lysine for Cats Oral Paste Immune & Respiratory Support for Felines with Collagen Zinc Multivitamins & Probiotics Natural Chicken Flavor 4.23 oz (Orange 1 Pack)**Jollyfit**$14.51**4.2★**▲ 120%**](https://www.amazon.com/dp/B0FZT61RTK) [**Vetoquinol Viralys - Lysine Supplement for Cats & Kittens - Supports Eye Wellness Respiratory Health & Immune Strength - Flavored Oral Gel for Easy Feeding & Daily Use for Picky Eaters - 5oz**Vetoquinol**$24.49**4.5★**— 9%**](https://www.amazon.com/dp/B00AMEBH06) [**Felisyl L-Lysine Gel for Cats & Kittens (5oz) Immune System Respiratory & Eye Health Support. Reduces Sneezing Runny Nose & Watery Eyes. Daily Salmon-Flavor Supplement Made in USA (2 Pack)**Felisyl**$34.86**4.4★**— 5%**](https://www.amazon.com/dp/B0DLPWPBCL) [**Felisyl L-Lysine Gel for Cats & Kittens (5oz) Immune System Respiratory & Eye Health Support. Reduces Sneezing Runny Nose & Watery Eyes. Daily Salmon-Flavor Supplement Made in USA (1 Pack)**Felisyl**$18.29**4.4★**— 5%**](https://www.amazon.com/dp/B00MO9SHBE) [**Quantum Health Lip Clear Lysine+ Cold Sore Treatment Soothe & Moisturize Mouth Sores - L-Lysine Menthol Calendula & Propolis Ointment - Transparent Fever Blister Healing Balm - 0.25 Oz**Quantum**$7.60**4.6★**▼ 17%**](https://www.amazon.com/dp/B00014EGA0)
**~~View all trending →~~**
## **What buyers say about lysine gel for cats**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Taste-Overall**15%
*“It was like the best treat she had ever received”*
**Pet Friendly**15%
*“Cats love it”*
**Quality-Overall**10%
*“Excellent product”*
**Flavor**10%
*“They also love the flavor”*
**Efficiency**7%
*“Worked faster than anything I have ever tried”*
**Ease Of Use**7%
*“Easy to use”*
**Value For Money**5%
*“The price was reasonable as well”*
**Soothing/Teething**4%
*“He absolutely loves the stuff, and it helps his eyes and nose”*
**Smell**2%
*“it doesnt smell bad like other brands I tried”*
**Ease Of Chewing/Swallowing**2%
*“she eats it really well”*
### **What buyers complain about **
**Smell**12%
*“it really doesnt smell that strong compared ro some cat treats/supplements”*
**Value For Money**10%
*“This little baby is pricey as heck”*
**Taste-Overall**9%
*“So apparently the taste of this is awful for cats”*
**Flavor**6%
*“He does not like the maple flavor at all”*
**Ingredients-Overall**6%
*“Did they change the ingredients”*
**Allergies**5%
*“One of them gets bad allergies every year”*
**Functionality-Overall**4%
*“I see no change”*
**Indigestion**4%
*“Makes my cat vomit”*
**Ease Of Use**3%
*“Not convenient at all”*
**Texture/Consistency-Overall**3%
*“I do wish it had a bit easier consistency”*
### **Top return reasons **
**Functionality-Overall**30%
**Advertised Vs Actual Product**24%
**Value For Money**15%
**Smell**9%
**Ingredients-Overall**6%
**Moist/Dry**3%
**Ease Of Use**3%
**Defective Material/Parts**3%
**Ethical Trade/Fair Trade**3%
**Suitability Hot Weather**3%
## **Common questions**
- **Is lysine gel for cats profitable to sell on Amazon United States?**
- The niche generates $102K/yr across 6 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -15.2%. Flapen's verdict: Skip it (42/100).
- **How competitive is the lysine gel for cats niche?**
- 5 brands and 35 sellers compete. The top 5 products take 97% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in lysine gel for cats?**
- Top complaints mined from reviews: Smell, Value For Money, Taste-Overall. The return rate is 0.0%.
- **What does it cost to enter the lysine gel for cats niche?**
- Listings span $7.60–$34.86; the average listing price is $19.36 (sweet spot $15–$100). The average incumbent carries 3,723 reviews — the moat a new listing must climb.
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