Is zma profitable to sell on Amazon United States?

The niche generates $1.7M/yr across 15 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -14.4%. Flapen's verdict: Worth a look (58/100).

How competitive is the zma niche?

11 brands and 34 sellers compete. The top 5 products take 68% of clicks and top 5 brands hold 79% of demand.

What do buyers complain about in zma?

Top complaints mined from reviews: Sleep Quality, Side Effects, Ingredients-Overall. The return rate is 0.0%.

When does demand for zma peak?

Demand is steady year-round — the busiest month runs 1.4× the quietest.

What does it cost to enter the zma niche?

Listings span $9.96–$37.49; the average listing price is $23.03 (sweet spot $15–$100). The average incumbent carries 3,072 reviews — the moat a new listing must climb.

zma

Worth a look

Shows low returns (0.0%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Conversion

Incredible13.2%

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

Avg price

Incredible$23.03

avg listing price — sweet spot $15–$100

Market size

Great$1.7M

$1.7M/yr · 553K searches

Price range

Great$9.96–$37.49

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

Brand share

Okay79%

top-5 brand share — brands hold most of the demand

Review moat

Okay3,072.13

avg incumbent reviews — the moat a new listing must climb

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Competition

Okay68%

top-5 click share — leaders hold, buyers still browse

Growth

Bad-14.4%

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

Signals No Dominant Brand

According to Flapen's Amazon United States niche tracking, zma is a $1.7M/yr Amazon United States market (553K searches/yr). The top 5 brands hold 79% of demand. Verdict: Worth a look — 58/100.

Data updated Jul 10, 2026 · scored weekly · How we score niches

zma market data

Units sold / yr: 60K–80K; avg 4,000–5,000/product
Revenue / yr: $1.4M–$1.8M; units × avg price
Conversion rate: 13.2%
Avg BSR: #720
Page quality: 0%
Prime: 100%
Sponsored: 100%
Out of stock: 4.1%
Avg brand age: 71 months
Avg seller age: 145 days

Competition & brand share

The top 5 products take 68% of clicks — established leaders, but buyers still shop beyond them.

Brands

11 flat

Sellers

Top-5 brand share

79%

Top 20: 100%

Top-5 click share

68%

Top 20: 100%

Open market

14%

Optimum Nutrition20%
Nutricost20%
NOW Foods16%
Primaforce14%
SNAC9%
Double Wood Supplements7%
Open — no brand owns it (5 brands, 14%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -14.4% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.4×

Open Trend

Top zma search terms

zma309K/yr -13.7%13.2% conv.
zma supplements for men148K/yr -16.8%10.2% conv.
zma supplements23K/yr -19.8%10.1% conv.
zma supplements for women15K/yr -21.4%8.1% conv.
zinc magnesium aspartate9K/yr -13.8%10.0% conv.
on zma4K/yr +40.2%2.1% conv.
zma magnesium glycinate4K/yr -1.8%0.7% conv.
zma supplement6K/yr +5.2%6.5% conv.
optimum nutrition zma4K/yr -7.2%12.8% conv.
zmt supplement5K/yr -0.1%3.5% conv.

All search terms

Top zma 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 15 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Nutricost ZMA 180 Capsules - Non-GMO and Gluten Free ZMA Supplement

Nutricost$24.514.7★1,340 rev

Optimum Nutrition Muscle Recovery and Endurance Supplement for Men and Women Zinc and Magnesium Supplement 180 Count

Optimum Nutrition$34.774.6★12,623 rev

Primaforce ZMA Dietary Supplement 180 Capsules

Primaforce$22.634.6★1,704 rev

NOW Foods Sports Nutrition ZMA (Zinc Magnesium and Vitamin B-6) Enhanced Absorption Sports Recovery* 180 Capsules

NOW Foods$24.524.6★2,834 rev

ZMA Supplement for Men and Women (Over 100% Daily Value of Zinc Magnesium Aspartate Vitamin B6) 501mg 90 Capsules for Restfulness and Active Lifestyle Support by Double Wood Supplements

Double Wood Supplements$9.964.6★121 rev

Newest

by launch date

ZMA Supplement for Men and Women (Over 100% Daily Value of Zinc Magnesium Aspartate Vitamin B6) 501mg 90 Capsules for Restfulness and Active Lifestyle Support by Double Wood Supplements

Double Wood Supplements$9.96121 rev

10mo ago

NutraBio ZMA Supplements for Men & Women- Zinc Magnesium Supplements to Support Hormone Levels -Sleep- Muscle Recovery-Immune Health 90 Count

NutraBio$22.02676 rev

7y ago

EVL Post Workout Recovery Supplement - Magnesium and Zinc - ZMatrix Zinc Magnesium Aspartate Muscle Recovery Supplement for Sleep Support and Muscle Health

Evlution$26.151,961 rev

7y ago

SNAC ZMA The Original Sleep Recovery Supplement - 90 Capsules Pack of 2

SNAC$26.411,997 rev

9y ago

Nutricost ZMA 180 Capsules - Non-GMO and Gluten Free ZMA Supplement

Nutricost$24.511,340 rev

9y ago

What buyers say about zma

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

What buyers love

Sleep Quality28%

“Helps with sleep”

Quality-Overall16%

“Great quality supplement”

Advertised Vs Actual Product10%

“As advertised”

Value For Money7%

“Price is good too”

Efficiency7%

“this one is by far the best and most effective”

Vitamin3%

“The supplement worked well”

Muscle Pain Relief3%

“Helps with muscle recovery and sleep”

Strength3%

“Effective”

Magnesium3%

“Best magnesium/zinc supplement Ive used”

Energy Level2%

“I see how it makes me feel I see if I notice any changes energy etc”

What buyers complain about

Sleep Quality25%

“doesnt help sleep”

Side Effects13%

“After a week, every day following ZMA supplementation has left me feeling extremely tired, sluggish, groggy, and lethargic”

Ingredients-Overall6%

“I suppose if you are severely missing any of the 3 ingredients it could help some”

Vitamin6%

“I'm wary about supplements”

Functionality-Overall6%

“Efficacy may vary”

Charging6%

“Wrong packaging and charge”

Dosage5%

“Would love more if the dosage was two capsules instead of three”

Magnesium3%

“Also I have experienced strange dreams from the magnesium”

Advertised Vs Actual Product3%

“Wrong graphic for the product image”

Ease Of Use1%

“hard to swallow”

Top return reasons

Functionality-Overall33%

Value For Money33%

Moist/Dry17%

Sleep Quality17%

Common questions

Is zma profitable to sell on Amazon United States?: The niche generates $1.7M/yr across 15 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -14.4%. Flapen's verdict: Worth a look (58/100).
How competitive is the zma niche?: 11 brands and 34 sellers compete. The top 5 products take 68% of clicks and top 5 brands hold 79% of demand.
What do buyers complain about in zma?: Top complaints mined from reviews: Sleep Quality, Side Effects, Ingredients-Overall. The return rate is 0.0%.
When does demand for zma peak?: Demand is steady year-round — the busiest month runs 1.4× the quietest.
What does it cost to enter the zma niche?: Listings span $9.96–$37.49; the average listing price is $23.03 (sweet spot $15–$100). The average incumbent carries 3,072 reviews — the moat a new listing must climb.

zma