--- title: "lysine gel for cats — Niche Verdict: Skip it (39/100) | Amazon United States - Flapen" canonical_url: "https://flapen.com/amazon/research/us/pet-supplies/lysine-gel-for-cats" last_updated: "2026-07-10T02:42:39.372Z" locale: en meta: description: "a concentrated shelf (top 5 take 97% of clicks) — lysine gel for cats doesn't clear our bar today." "og:description": "a concentrated shelf (top 5 take 97% of clicks) — lysine gel for cats doesn't clear our bar today." "og:title": "lysine gel for cats — Niche Verdict: Skip it (39/100) | Amazon United States - Flapen" --- Back to Flapen home # **lysine gel for cats** **Skip it****39/100 ** a concentrated shelf (top 5 take 97% of clicks) — lysine gel for cats doesn't clear our bar today. **Market/yr** **$102K** **Growth (1y)** **+176.6%** **Products** **6** **Brands** **5** was 5 a year ago **Sellers** **35** **Price range** **$7.60–$34.86** **Returns** **0.0%** **Rating** **4.4★** **Skip it** Scored 39/100 across market size, growth, competition, quality gap, and returns. Market sizeGrowthCompetitionQuality gapReturns Market size **5** ×0.30 Growth **74** ×0.30 Competition **0** ×0.20 Quality gap **52** ×0.10 Returns **100** ×0.10 ## **Demand** Weekly Amazon search volume, last 40 weeks — +176.6% year over year. 526263Spike '26Oct '25Nov '25Dec '25Feb '26Mar '26May '26Jun '26 ## **Competition** - Felisyl66% - Vetoquinol21% - Jollyfit6% - Quantum4% - Pet Health Solutions3% The top 5 products capture 97% of clicks — a locked-up shelf that new listings rarely crack. 5 brands and 35 sellers compete here. **Brands** **5 **—flat was 5 a year ago **Sellers** **35** **Top 5 brand share** **100%** #ProductBrandPriceRatingReviewsClick shareTrend 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)](https://m.media-amazon.com/images/I/416hY7iNOhL.jpg) [**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)**](https://www.amazon.com/dp/B00MO9SHBE) Felisyl$18.294.4★2,21262%▼falling 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](https://m.media-amazon.com/images/I/31LTQAqU4yL.jpg) [**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**](https://www.amazon.com/dp/B00AMEBH06) Vetoquinol$24.494.5★11,20921%▲rising 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)](https://m.media-amazon.com/images/I/31juYSIHGZL.jpg) [**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)**](https://www.amazon.com/dp/B0FZT61RTK) Jollyfit$14.514.2★916%▲rising 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)](https://m.media-amazon.com/images/I/41wXyUu10RL.jpg) [**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)**](https://www.amazon.com/dp/B0DLPWPBCL) Felisyl$34.864.4★2,2124%—flat 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](https://m.media-amazon.com/images/I/513-3ZbhqlL.jpg) [**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**](https://www.amazon.com/dp/B00014EGA0) Quantum$7.604.6★5,8844%▼falling 6 ![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](https://m.media-amazon.com/images/I/41pzJkarX8L.jpg) [**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**](https://www.amazon.com/dp/B004OA5ZLG) Pet Health Solutions$16.394.2★7283%▼falling ## **Product shelf** All 6 tracked products in this niche. Top sellersNewestTrending [![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)](https://m.media-amazon.com/images/I/416hY7iNOhL.jpg)**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 reviews](https://www.amazon.com/dp/B00MO9SHBE) [![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](https://m.media-amazon.com/images/I/31LTQAqU4yL.jpg)**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 reviews](https://www.amazon.com/dp/B00AMEBH06) [![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)](https://m.media-amazon.com/images/I/31juYSIHGZL.jpg)**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 reviews](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)](https://m.media-amazon.com/images/I/41wXyUu10RL.jpg)**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 reviews](https://www.amazon.com/dp/B0DLPWPBCL) [![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](https://m.media-amazon.com/images/I/513-3ZbhqlL.jpg)**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 reviews](https://www.amazon.com/dp/B00014EGA0) [![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](https://m.media-amazon.com/images/I/41pzJkarX8L.jpg)**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**4.2★728 reviews](https://www.amazon.com/dp/B004OA5ZLG) ## **Reviews** 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-Overall30% - Advertised Vs Actual Product24% - Value For Money15% - Smell9% - Ingredients-Overall6% - Moist/Dry3% - Ease Of Use3% - Defective Material/Parts3% - Ethical Trade/Fair Trade3% - Suitability Hot Weather3%