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.

lysine gel for cats

Skip it

Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.

Conversion

Incredible28.0%

search→purchase rate — share of searches ending in a sale

Returns

Incredible0.0%

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

Good4.4★

avg incumbent rating — lower means beatable quality

Review moat

Okay3,722.67

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

Bad97%

top-5 click share — a locked-up shelf

Brand share

Bad100%

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

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

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

97%

Top 20: 100%

Open market

Felisyl66%
Vetoquinol21%
Jollyfit6%
Quantum4%
Pet Health Solutions3%

Demand

Weekly Amazon search volume, last 40 weeks — -15.2% search growth over the last 90 days.

Open Trend

Top lysine gel for cats search terms

felisyl l-lysine gel for cats5K/yr +1.0%24.9% conv.
lysine gel for cats6K/yr -19.1%13.4% conv.
lysine gel4K/yr -18.4%6.2% conv.
felisyl4K/yr -24.2%18.8% conv.

All 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.

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

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$18.294.4★2,212 rev

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$24.494.5★11,209 rev

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$14.514.2★91 rev

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$34.864.4★2,212 rev

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$7.604.6★5,884 rev

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$14.5191 rev

8mo ago

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$34.862,212 rev

4y ago

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$18.292,212 rev

12y ago

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$16.39728 rev

17y ago

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$24.4911,209 rev

20y ago

What buyers say about lysine gel for cats

What buyers praise and complain about, mined from review topics.

What buyers love

Taste-Overall15%

“It was like the best treat she had ever received”

Pet Friendly15%

“Cats love it”

Quality-Overall10%

“Excellent product”

Flavor10%

“They also love the flavor”

Efficiency7%

“Worked faster than anything I have ever tried”

Ease Of Use7%

“Easy to use”

Value For Money5%

“The price was reasonable as well”

Soothing/Teething4%

“He absolutely loves the stuff, and it helps his eyes and nose”

Smell2%

“it doesnt smell bad like other brands I tried”

Ease Of Chewing/Swallowing2%

“she eats it really well”

What buyers complain about

Smell12%

“it really doesnt smell that strong compared ro some cat treats/supplements”

Value For Money10%

“This little baby is pricey as heck”

Taste-Overall9%

“So apparently the taste of this is awful for cats”

Flavor6%

“He does not like the maple flavor at all”

Ingredients-Overall6%

“Did they change the ingredients”

Allergies5%

“One of them gets bad allergies every year”

Functionality-Overall4%

“I see no change”

Indigestion4%

“Makes my cat vomit”

Ease Of Use3%

“Not convenient at all”

Texture/Consistency-Overall3%

“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%