Is lysine powder for cats profitable to sell on Amazon United States?

The niche generates $444K/yr across 6 tracked products. 90-day search growth is -12.0%. Flapen's verdict: Skip it (46/100).

How competitive is the lysine powder for cats niche?

5 brands and 17 sellers compete. The top 5 products take 98% of clicks and top 5 brands hold 100% of demand.

What do buyers complain about in lysine powder for cats?

Top complaints mined from reviews: Allergies, Value For Money, Smell. The return rate is 0.0%.

When does demand for lysine powder for cats peak?

Demand peaks in Jan–Feb–May–Jun; the busiest month runs 3.7× the quietest.

What does it cost to enter the lysine powder for cats niche?

Listings span $12.16–$30.84; the average listing price is $21.82 (sweet spot $15–$100). The average incumbent carries 5,505 reviews — the moat a new listing must climb.

lysine powder for cats

Skip it

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

Returns

Incredible0.0%

return rate — above 6% kills the launch gate

Conversion

Incredible16.1%

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

Avg price

Great$21.82

avg listing price — sweet spot $15–$100

Price range

Great$12.16–$30.84

cheapest to priciest tracked listing — scored on the share inside $15–$100

Market size

Good$444K

$444K/yr · 126K searches

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Review moat

Bad5,505

avg incumbent reviews — the moat a new listing must climb

Growth

Bad-12.0%

90-day search growth — must beat 0% to launch

Competition

Bad98%

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 powder for cats is a $444K/yr Amazon United States market (126K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Jan–Feb–May–Jun. Verdict: Skip it — 46/100.

Data updated Jul 9, 2026 · scored weekly · How we score niches

lysine powder for cats market data

Units sold / yr: 20K–25K; avg 3,000–4,000/product
Revenue / yr: $436K–$546K; units × avg price
Launch success: —; 0 of 0 new (360d)
Conversion rate: 16.1%
Avg BSR: #193
Page quality: 0%
Prime: 100%
Sponsored: 100%
Out of stock: 0.0%
Avg brand age: 60 months
Avg seller age: 184 days

Competition & brand share

The top 5 products capture 98% of clicks — a locked-up shelf that new listings rarely crack.

Brands

5 falling

Sellers

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

98%

Top 20: 100%

Open market

Vetoquinol79%
Coco and Luna8%
TOMLYN6%
NOW Foods4%
Holy Pets2%
Open — no brand owns it (0%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -12.0% search growth over the last 90 days.

Peak months: Jan, Feb, May, Jun · busiest ÷ quietest = 3.7×

Open Trend

Top lysine powder for cats search terms

viralys lysine for cats44K/yr -3.9%18.1% conv.
viralys21K/yr -17.3%16.4% conv.
lysine powder for cats17K/yr -15.1%10.2% conv.
viralys for cats17K/yr -25.1%14.1% conv.
lysine for cats powder5K/yr -4.1%10.5% conv.
viralys l-lysine for cats3K/yr +33.5%16.1% conv.
tomlyn immune support for cats4K/yr -16.7%15.8% conv.
l-lysine powder for cats3K/yr -12.5%11.1% conv.
l lysine powder for cats3K/yr -13.0%9.2% conv.
cat lysine powder3K/yr -7.4%8.9% conv.

All search terms

Top lysine powder 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

Vetoquinol Viralys - Lysine Supplement for Cats & Kittens - Supports Eye Wellness Respiratory Health & Immune Strength - Flavored Oral Powder for Easy Feeding & Daily Use - 100 Grams

Vetoquinol$30.844.6★9,577 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 900mg - Immune Eye & Respiratory Support Powder

Coco and Luna$22.494.4★3,170 rev

Tomlyn Immune Support Daily L-Lysine Supplement Fish-Flavored Lysine Powder for Cats and Kittens 3.5oz

TOMLYN$20.294.6★5,419 rev

NOW Pet Health L-Lysine Supplement Powder Formulated for Cats NASC Certified 8-Ounce

NOW Foods$12.164.5★3,547 rev

Newest

by launch date

Holy Pets 100% Pure L-Lysine Powder for Cats No Flavors No Fillers or Preservatives 1 000mg per Scoop Immune Respiratory & Eye Support Helps with Sneezing Runny Nose & Cold Symptoms

Holy Pets$20.62108 rev

1y ago

L-Lysine for Cats 900mg - Immune Eye & Respiratory Support Powder

Coco and Luna$22.493,170 rev

6y ago

NOW Pet Health L-Lysine Supplement Powder Formulated for Cats NASC Certified 8-Ounce

NOW Foods$12.163,547 rev

10y ago

Tomlyn Immune Support Daily L-Lysine Supplement Fish-Flavored Lysine Powder for Cats and Kittens 3.5oz

TOMLYN$20.295,419 rev

13y ago

Vetoquinol Viralys - Lysine Supplement for Cats & Kittens - Supports Eye Wellness Respiratory Health & Immune Strength - Flavored Oral Powder for Easy Feeding & Daily Use - 100 Grams

Vetoquinol$30.849,577 rev

20y ago

What buyers say about lysine powder for cats

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

What buyers love

Quality-Overall15%

“Great product and cats love it”

Taste-Overall14%

“They both love the taste of the powder”

Value For Money13%

“Good Value”

Flavor8%

“Flavor my cat loves”

Pet Friendly6%

“So easy to throw into my cats daily routine”

Advertised Vs Actual Product6%

“As Advertised”

Ease Of Use6%

“Easy to use”

Soothing/Teething5%

“Helps with respiratory problems”

Smell4%

“It has a strong fish smell”

Durability2%

“Always Reliable”

What buyers complain about

Allergies12%

“showes signs of allergy just one day after he started taking it”

Value For Money11%

“The whole thing costed me almost $2,000”

Smell9%

“It does have a fishy smell”

Functionality-Overall7%

“Didn't work for my cats”

Flavor7%

“He does not like the maple flavor at all”

Indigestion5%

“he started coughing immediately after eating”

Taste-Overall5%

“Tastes terrible”

Ease Of Use4%

“Cant use”

Ease Of Chewing/Swallowing3%

“on Chewy”

Ease Of Cleaning2%

“will not let me clean his eyes”

Top return reasons

Advertised Vs Actual Product33%

Functionality-Overall33%

Ethical Trade/Fair Trade33%

Common questions

Is lysine powder for cats profitable to sell on Amazon United States?: The niche generates $444K/yr across 6 tracked products. 90-day search growth is -12.0%. Flapen's verdict: Skip it (46/100).
How competitive is the lysine powder for cats niche?: 5 brands and 17 sellers compete. The top 5 products take 98% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in lysine powder for cats?: Top complaints mined from reviews: Allergies, Value For Money, Smell. The return rate is 0.0%.
When does demand for lysine powder for cats peak?: Demand peaks in Jan–Feb–May–Jun; the busiest month runs 3.7× the quietest.
What does it cost to enter the lysine powder for cats niche?: Listings span $12.16–$30.84; the average listing price is $21.82 (sweet spot $15–$100). The average incumbent carries 5,505 reviews — the moat a new listing must climb.