Skip to content
42

nervous system supplements

Skip it

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

Market size 29Growth 23Conversion 88Competition 3Returns 100Price range 81Avg price 86Brand share 0Review moat 38Quality gap 52

Returns

Incredible0.0%

return rate — above 6% kills the launch gate

Conversion

Great10.3%

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

Avg price

Great$19.53

avg listing price — sweet spot $15–$100

Price range

Great$8.38–$47.18

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

Okay2,739.29

avg incumbent reviews — the moat a new listing must climb

Market size

Okay$125K

$125K/yr · 62K searches

Growth

Bad-4.3%

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

Competition

The top 5 products capture 97% of clicks — a locked-up shelf that new listings rarely crack.

Brands

5 flat

Sellers

51

Top-5 brand share

100%

Open market

0%

  • Hyland's84%
  • NOW Foods5%
  • LifeSeasons4%
  • Herb Pharm4%
  • Boiron3%
  • Open — no brand owns it (0%)

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%15%$19K30%$37K45%$56K60%$75K1001K10K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 7 tracked products in this niche — three views at once, no toggling.

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -4.3% search growth over the last 90 days.
3K2KSpike '25Spike '26SepDecMarJunAugNovMarMay

Peak months: May · busiest ÷ quietest = 2.1×

Reviews

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

What buyers love

Stress/Anxiety27%

“Excellent for anxiety”

Quality-Overall11%

“Excellent and consistent quality”

Efficiency10%

“Work within seconds”

Soothing Effect6%

“Very calming”

Sleep Quality6%

“Helps me sleep at night”

Side Effects5%

“Since starting this supplement. she takes 2 pills each night with dinner., her symptoms have drastically reduced and she is so much more relaxed and more focused”

Focus Enhancement4%

“helps you focus”

Value For Money3%

“They are very affordable”

Advertised Vs Actual Product2%

“Product was as described”

Dosage2%

“Overall good quality of a small pill”

What buyers complain about

Stress/Anxiety22%

“This did not work for my anxiety”

Functionality-Overall21%

“Did not work”

Side Effects8%

“But I have noticed a weird side effect”

Sleep Quality4%

“Ive had a very low quality of sleep for years especially after working night shifts in a very stressful environment”

Dosage4%

“These are not like taking a benzodiazapam medication”

Acid Regulator/Stomach Ache Relief3%

“I get diarrhea after taking this”

Quality-Overall3%

“Not many good reviews”

Value For Money3%

“Great, But Expensive”

Ingredients-Overall3%

“Could be because my body isnt used to the ingredients”

Strength2%

“These arent super strong”

Top return reasons

Functionality-Overall50%
Magnesium50%