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tums 500mg

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A small market ($46K/yr) — this niche doesn't clear our bar today.

Market size 11Growth 32Conversion 92Competition 63Returns 100Price range 52Avg price 61Brand share 16Review moat 34Quality gap 20

Returns

Incredible0.0%

return rate — above 6% kills the launch gate

Conversion

Great11.4%

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

Competition

Good47%

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

Avg price

Good$13.28

avg listing price — sweet spot $15–$100

Price range

Good$2.67–$28.12

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

Review moat

Okay3,126.32

avg incumbent reviews — the moat a new listing must climb

Growth

Okay+5.8%

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

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

Brand share

Bad94%

top-5 brand share — brand-locked demand

Market size

Bad$46K

$46K/yr · 30K searches

Competition

The top 5 products take 47% of clicks — established leaders, but buyers still shop beyond them.

Brands

9 flat

Sellers

665

Top-5 brand share

94%

Open market

4%

  • TUMS54%
  • MAJOR25%
  • RUGBY LABORATORIES8%
  • Quality Choice4%
  • 365 by Whole Foods Market3%
  • berkley jensen3%
  • Open — no brand owns it (3 brands, 4%)

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%$2K10%$5K15%$7K20%$9K101001K10K100K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 25 tracked products in this niche — three views at once, no toggling.

Demand

Weekly Amazon search volume, last 40 weeks — +5.8% search growth over the last 90 days.
900700Oct '25Nov '25Dec '25Feb '26Mar '26May '26Jun '26

Reviews

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

What buyers love

Taste-Overall19%

“Good taste”

Value For Money13%

“Best value”

Advertised Vs Actual Product8%

“As advertised”

Quality-Overall7%

“Great quality”

Flavor6%

“Best flavor”

Heart Health6%

“they work really well for occasional heart burn”

Efficiency6%

“Does the job”

Ease Of Chewing/Swallowing5%

“not too chewy”

Acid Regulator/Stomach Ache Relief5%

“They help my stomach feel better”

Ease Of Use3%

“Ease of use”

What buyers complain about

Taste-Overall12%

“Bad aftertaste”

Value For Money7%

“A bit expensive”

Size-Overall7%

“Smaller than expected”

Flavor6%

“Bland flavor”

Ease Of Chewing/Swallowing4%

“Not Chewy”

Functionality-Overall3%

“Did not work”

Sweetness3%

“So much sugar”

Hard Feel3%

“These tums are not soft”

Dosage2%

“Horrible and only 400mg per pill so the bottle was returned”

Texture/Consistency-Overall2%

“the texture is still chalky”

Top return reasons

Advertised Vs Actual Product100%