Is antacid profitable to sell on Amazon United States?

The niche generates $784K/yr across 19 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is -4.6%. Flapen's verdict: Skip it (49/100).

How competitive is the antacid niche?

8 brands and 115 sellers compete. The top 5 products take 64% of clicks and top 5 brands hold 93% of demand.

What do buyers complain about in antacid?

Top complaints mined from reviews: Taste-Overall, Ease Of Chewing/Swallowing, Hard Feel. The return rate is 0.0%.

When does demand for antacid peak?

Demand peaks in Jul–Aug; the busiest month runs 2.3× the quietest.

What does it cost to enter the antacid niche?

Listings span $5.18–$28.12; the average listing price is $10.05 (sweet spot $15–$100). The average incumbent carries 5,020 reviews — the moat a new listing must climb.

antacid

Skip it

Brand-locked demand (top 5 brands take 93% of clicks) — this niche doesn't clear our bar today.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Conversion

Incredible18.2%

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

Market size

Good$784K

$784K/yr · 428K searches

Price range

Good$5.18–$28.12

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

Competition

Okay64%

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

Avg price

Okay$10.05

avg listing price — sweet spot $15–$100

Review moat

Bad5,019.89

avg incumbent reviews — the moat a new listing must climb

Growth

Bad-4.6%

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

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

Brand share

Bad93%

top-5 brand share — brand-locked demand

According to Flapen's Amazon United States niche tracking, antacid is a $784K/yr Amazon United States market (428K searches/yr). The top 5 brands hold 93% of demand. Demand peaks in Jul–Aug. Verdict: Skip it — 49/100.

Data updated Jul 11, 2026 · scored weekly · How we score niches

antacid market data

Units sold / yr: 80K–100K; avg 3,000–4,000/product
Revenue / yr: $804K–$1.0M; units × avg price
Conversion rate: 18.2%
Avg BSR: #69
Page quality: 0%
Prime: 100%
Sponsored: 68%
Out of stock: 4.3%
Avg brand age: 100 months
Avg seller age: 147 days

Competition & brand share

The top 5 products take 64% of clicks — established leaders, but buyers still shop beyond them.

Brands

8 falling

Sellers

115

Top-5 brand share

93%

Top 20: 100%

Top-5 click share

64%

Top 20: 100%

Open market

Amazon Basic Care35%
TUMS26%
berkley jensen15%
MAJOR13%
RUGBY LABORATORIES5%
KIRKLAND3%
Open — no brand owns it (2 brands, 3%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -4.6% search growth over the last 90 days.

Peak months: Jul, Aug · busiest ÷ quietest = 2.3×

Open Trend

Top antacid search terms

antacid tablets chewable247K/yr -8.8%17.2% conv.
antacids chewable extra strength54K/yr +8.8%17.1% conv.
chewable antacid26K/yr -0.0%12.3% conv.
antacids chewable19K/yr -1.7%10.7% conv.
anti acid relief chewable12K/yr +17.3%13.4% conv.
antacid chewable tablets17K/yr -1.3%9.9% conv.
chewable antacids7K/yr +27.8%5.9% conv.
antacid chewable9K/yr -8.7%11.6% conv.
generic tums4K/yr +19.9%14.0% conv.
calcium carbonate chewable8K/yr -37.4%4.2% conv.

All search terms

Top antacid 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 19 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Amazon Basic Care Chewy Bites Chewable Antacid Tablets Ultra Strength Heartburn Relief Acid Indigestion Upset & Sour Stomach Fast-Acting Assorted Fruit Flavors 90 Count

Amazon Basic Care$8.974.6★5,809 rev

Berkley Jensen Ultra Strength Antacid Chewable Tablets - 1000mg Calcium Carbonate for Heartburn Acid Indigestion Upset Stomach Relief - Assorted Berry Flavor - 265 Count

berkley jensen$9.964.7★1,381 rev

TUMS Ultra Strength Chewable Antacid Tablets for Heartburn Relief and Acid Indigestion Relief Assorted Berries - 160 Count

TUMS$9.854.8★7,542 rev

MAJOR Regular Strength Antacid Tablets - Calcium Carbonate 500 mg - Assorted Fruit Flavor - 150 Chewable Count (2 Pack)

MAJOR$10.014.6★881 rev

Amazon Basic Care Heartburn & Gas SuperChews Chewable Tablets Fast-Acting Relief Mixed Berry 82 Count (Previously SoundHealth)

Amazon Basic Care$8.174.6★6,709 rev

Newest

by launch date

TUMS Smoothies Chewable Antacid Tablets for Extra Strength Heartburn Relief Mixed Berry - 236 Count

TUMS$14.70173 rev

2mo ago

Berkley Jensen Ultra Strength Antacid Chewable Tablets - 1000mg Calcium Carbonate for Heartburn Acid Indigestion Upset Stomach Relief - Assorted Berry Flavor - 265 Count

berkley jensen$9.961,381 rev

5mo ago

Quality Choice Ultra Strength Antacid Tablets Heartburn and Acid Indigestion Relief Calcium Carbonate 1000 mg Berry Flavored Chewable Tablets 72 Count

Quality Choice$7.66779 rev

3y ago

TUMS Chewy Bites Chewable Antacid Tablets for Ultra Strength Heartburn Relief Mixed Fruit - 200 Count

TUMS$28.124,819 rev

3y ago

Amazon Basic Care Heartburn & Gas SuperChews Chewable Tablets Fast-Acting Relief Mixed Berry 82 Count (Previously SoundHealth)

Amazon Basic Care$8.176,709 rev

4y ago

What buyers say about antacid

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

What buyers love

Taste-Overall20%

“Taste smooth”

Value For Money13%

“Best value”

Heart Health7%

“It helps heart burn”

Efficiency7%

“Seemed to work in a satisfactory manner”

Quality-Overall7%

“Excellent product”

Flavor6%

“Best flavor”

Advertised Vs Actual Product6%

“As advertised”

Acid Regulator/Stomach Ache Relief5%

“Helps with my acid reflux”

Ease Of Chewing/Swallowing5%

“Best tasting chewable”

Regulates Digestion2%

“Easy to digest”

What buyers complain about

Taste-Overall13%

“Bad aftertaste”

Ease Of Chewing/Swallowing9%

“Not initially chewable”

Hard Feel7%

“Hard As Rocks”

Value For Money6%

“Not worth the price”

Flavor4%

“Horrible flavor yuck”

Functionality-Overall4%

“Didn't work for me”

Size-Overall3%

“Smaller than expected”

Heart Health3%

“Heart burn”

Texture/Consistency-Overall2%

“It's slightly chalky in texture”