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58

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.

Market size 89Growth 18Conversion 96Competition 29Returns 100Price range 80Avg price 95Brand share 44Review moat 34Quality gap 33

Returns

Incredible0.0%

return rate — above 6% 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

Competition

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

Brands

11 flat

Sellers

34

Top-5 brand share

79%

Open market

14%

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

Product shelf

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

0%5%$84K10%$168K15%$252K20%$336K1001K10K100K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

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

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -14.4% search growth over the last 90 days.
18K13KPrime Day '25Spike '25Spike '26SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.4×

Reviews

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%