Is amino acid hmb and leucine profitable to sell on Amazon United States?

The niche generates $11K/yr across 4 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is -36.7%. Flapen's verdict: Skip it (39/100).

How competitive is the amino acid hmb and leucine niche?

4 brands and 4 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.

What do buyers complain about in amino acid hmb and leucine?

Top complaints mined from reviews: Side Effects, Value For Money, Acid Regulator/Stomach Ache Relief. The return rate is 0.1%.

When does demand for amino acid hmb and leucine peak?

Demand peaks in Feb; the busiest month runs 43.7× the quietest.

What does it cost to enter the amino acid hmb and leucine niche?

Listings span $13.21–$29.26; the average listing price is $23.97 (sweet spot $15–$100). The average incumbent carries 148 reviews — the moat a new listing must climb.

amino acid hmb and leucine

Skip it

A concentrated shelf (top 5 take 100% of clicks) — this niche doesn't clear our bar today.

Returns

Incredible0.1%

return rate — above 5% kills the launch gate

Avg price

Incredible$23.97

avg listing price — sweet spot $15–$100

Review moat

Great148.25

avg incumbent reviews — the moat a new listing must climb

Price range

Great$13.21–$29.26

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

Conversion

Good6.8%

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

Quality gap

Good4.3★

avg incumbent rating — lower means beatable quality

Growth

Bad-36.7%

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

Market size

Bad$11K

$11K/yr · 7K searches

Competition

Bad100%

top-5 click share — a locked-up shelf

Brand share

Bad100%

top-5 brand share — brand-locked demand

Signals Low Review Barrier

According to Flapen's Amazon United States niche tracking, amino acid hmb and leucine is a $11K/yr Amazon United States market (7K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Feb. Verdict: Skip it — 39/100.

Data updated Jul 25, 2026 · scored weekly · How we score niches

amino acid hmb and leucine market data

Units sold / yr: 100–250; avg 0–100/product
Revenue / yr: $2K–$6K; units × avg price
Conversion rate: 6.8%
Avg BSR: #174
Page quality: 0%
Prime: 100%
Sponsored: 75%
Out of stock: 2.5%
Avg brand age: 50 months
Avg seller age: 165 days

Competition & brand share

The top 5 products capture 100% of clicks — a locked-up shelf that new listings rarely crack.

Brands

4 falling

Sellers

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

100%

Top 20: 100%

Open market

Nextdia30%
andmino28%
Jacked Factory22%
HFELIZ20%

Demand & seasonality

Weekly Amazon search volume, last 76 weeks — -36.7% search growth over the last 90 days.

Peak months: Feb · busiest ÷ quietest = 43.7×

Open Trend

Top amino acid hmb and leucine search terms

amino acid hmb and leucine3K/yr -67.2%0.0% conv.
leucine hmb amino acids supplement2K/yr +49.5%0.7% conv.
lucine and hmb amino acids1K/yr -14.3%2.4% conv.
leucine and hmb amino acid377/yr +100.0%0.0% conv.
amino acids with hmb and leucine148/yr +433.3%0.0% conv.

All search terms

Top amino acid hmb and leucine 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 4 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Hmb and L-Leucine Gummies Essential Amino Acids EAA Supplements for Men & Women w/Branched-Chain Amino (BCAA) & 4 Electrolytes Taurine L-Citrulline PS Vitamins B12 & D3 Sugar Free 60Cts

Nextdia$28.544.2★47 rev

andmino HMB and L-Leucine Gummies 3000mg with Trehalose for Muscle Growth Muscle Relief and Workout Recovery for Adults & Elder Non-GMO Vegan Gluten Free Apple Flavor 120

andmino$29.264.4★428 rev

Jacked Factory HMB + Leucine Capsules - L-Leucine 2g HMB 1g - Stimulate Muscle Growth Protect Lean Muscle Mass and Improve Athletic Performance - 180 Capsules

Jacked Factory$13.214.6★39 rev

HFELIZ HMB and Leucine Supplement 3500mg L-Leucine HMB with Vitamin D3 Amino Acid BCAA for Men Vegan Gluten Free 90 Capsules

HFELIZ$24.884.2★79 rev

Newest

by launch date

Jacked Factory HMB + Leucine Capsules - L-Leucine 2g HMB 1g - Stimulate Muscle Growth Protect Lean Muscle Mass and Improve Athletic Performance - 180 Capsules

Jacked Factory$13.2139 rev

5mo ago

Hmb and L-Leucine Gummies Essential Amino Acids EAA Supplements for Men & Women w/Branched-Chain Amino (BCAA) & 4 Electrolytes Taurine L-Citrulline PS Vitamins B12 & D3 Sugar Free 60Cts

Nextdia$28.5447 rev

10mo ago

HFELIZ HMB and Leucine Supplement 3500mg L-Leucine HMB with Vitamin D3 Amino Acid BCAA for Men Vegan Gluten Free 90 Capsules

HFELIZ$24.8879 rev

1y ago

andmino HMB and L-Leucine Gummies 3000mg with Trehalose for Muscle Growth Muscle Relief and Workout Recovery for Adults & Elder Non-GMO Vegan Gluten Free Apple Flavor 120

andmino$29.26428 rev

1y ago

What buyers say about amino acid hmb and leucine

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

What buyers love

Efficiency21%

“I conclude it is effective”

Taste-Overall12%

“taste like blue raspberry”

Muscle Pain Relief10%

“better muscle retention during training”

Quality-Overall7%

“Great product”

Ease Of Use6%

“convenient way to accurately add a precise dose of leucine whenever I want it”

Value For Money5%

“I will actually likely be buying these again because the cost isn't that bad”

Ease Of Chewing/Swallowing4%

“Still, for anyone who wants a simple, chewable option to support training and hydration, theyre a solid pick”

Vitamin3%

“Definitely worth adding to your supplement stack”

Advertised Vs Actual Product3%

“Work as intended”

Texture/Consistency-Overall3%

“Great texture”

What buyers complain about

Side Effects22%

“No noticeable effects”

Value For Money15%

“a bit on the high side of price”

Acid Regulator/Stomach Ache Relief11%

“Awful, gives me bloating and stomach aches”

Nutritional Content4%

“may not contain sufficient leucine to trigger muscle building/repair”

Vegan/Organic2%

“A healthy temptation — not remotely vegan”

Energy Level2%

“it kills our energy level”

Hard Feel1%

“a bit tough”

Taste-Overall1%

“have a little bit of a chemical metallic aftertaste”

Adhesion/Stickiness1%

“a little sticky”

Ease Of Chewing/Swallowing1%

“I usually end up swallowing them”

Common questions

Is amino acid hmb and leucine profitable to sell on Amazon United States?: The niche generates $11K/yr across 4 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is -36.7%. Flapen's verdict: Skip it (39/100).
How competitive is the amino acid hmb and leucine niche?: 4 brands and 4 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in amino acid hmb and leucine?: Top complaints mined from reviews: Side Effects, Value For Money, Acid Regulator/Stomach Ache Relief. The return rate is 0.1%.
When does demand for amino acid hmb and leucine peak?: Demand peaks in Feb; the busiest month runs 43.7× the quietest.
What does it cost to enter the amino acid hmb and leucine niche?: Listings span $13.21–$29.26; the average listing price is $23.97 (sweet spot $15–$100). The average incumbent carries 148 reviews — the moat a new listing must climb.