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guaifenesin liquid

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Soft demand (-31.0% this quarter) — this niche doesn't clear our bar today.

Market size 24Growth 9Conversion 91Competition 16Returns 100Price range 28Avg price 36Brand share 16Review moat 44Quality gap 28

Returns

Incredible0.0%

return rate — above 6% kills the launch gate

Conversion

Great11.1%

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

Review moat

Okay2,085

avg incumbent reviews — the moat a new listing must climb

Avg price

Okay$10.37

avg listing price — sweet spot $15–$100

Quality gap

Okay4.6★

avg incumbent rating — lower means beatable quality

Price range

Okay$4.47–$19.19

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

Market size

Bad$97K

$97K/yr · 85K searches

Competition

Bad80%

top-5 click share — a locked-up shelf

Brand share

Bad94%

top-5 brand share — brand-locked demand

Growth

Bad-31.0%

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

Competition

The top 5 products capture 80% of clicks — a locked-up shelf that new listings rarely crack.

Brands

7 falling

Sellers

62

Top-5 brand share

94%

Open market

3%

  • GeriCare38%
  • RUGBY LABORATORIES33%
  • Amazon Basic Care10%
  • Mucinex7%
  • SDA LABORATORIES6%
  • McKesson3%
  • Open — no brand owns it (1 brand, 3%)

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%10%$10K20%$19K30%$29K40%$39K101001K10K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 11 tracked products in this niche — three views at once, no toggling.

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -31.0% search growth over the last 90 days.
3K2KSpike '24Black Friday '24Spike '25Spike '26SepDecMarJunAugNovMarMay

Peak months: Jan, Feb · busiest ÷ quietest = 2.3×

Reviews

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

What buyers love

Cough Relief26%

“Good cough syrup”

Value For Money11%

“Good price”

Efficiency10%

“works fast”

Quality-Overall8%

“Just as good as name brand”

Taste-Overall7%

“It works and it tastes ok”

Advertised Vs Actual Product7%

“It works as advertised”

Cold Relief4%

“Best night cold medicine”

Sinus Relief2%

“Great product for sinuses”

Sleep Quality2%

“Was able sleep”

Flavor2%

“Flavor is good”

What buyers complain about

Taste-Overall18%

“TASTE AWFUL”

Cough Relief11%

“this is the worst tasting cough medicine Ive ever tasted”

Functionality-Overall7%

“ineffective”

Ease Of Use7%

“Too hard to open”

Value For Money5%

“TOOOOOO EXPENSIVE”

Dosage5%

“Dosage cup cracked and unusable”

Flavor3%

“Flavor is inconsistent”

Dilute/Watery3%

“WAYYYYYY TOO WATERY”

Sinus Relief2%

“the menthol additive is so strong it burns your tender esophagus when swallowed”

Instructions/User Manual/Troubleshooting2%

“The instructions for how to open it are inane”