Is zinc capsules profitable to sell on Amazon United States?

The niche generates $67K/yr across 8 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is -12.6%. Flapen's verdict: Skip it (31/100).

How competitive is the zinc capsules niche?

5 brands and 23 sellers compete. The top 5 products take 88% of clicks and top 5 brands hold 100% of demand.

What do buyers complain about in zinc capsules?

Top complaints mined from reviews: Size-Overall, Dosage, Ingredients-Overall. The return rate is 0.0%.

When does demand for zinc capsules peak?

Demand peaks in Jan; the busiest month runs 1.6× the quietest.

What does it cost to enter the zinc capsules niche?

Listings span $5.88–$15.59; the average listing price is $9.06 (sweet spot $15–$100). The average incumbent carries 30,442 reviews — the moat a new listing must climb.

zinc capsules

Skip it

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

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Conversion

Incredible15.6%

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

Avg price

Okay$9.06

avg listing price — sweet spot $15–$100

Quality gap

Okay4.6★

avg incumbent rating — lower means beatable quality

Growth

Bad-12.6%

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

Market size

Bad$67K

$67K/yr · 47K searches

Review moat

Bad30,442.38

avg incumbent reviews — the moat a new listing must climb

Competition

Bad88%

top-5 click share — a locked-up shelf

Price range

Bad$5.88–$15.59

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

Brand share

Bad100%

top-5 brand share — brand-locked demand

According to Flapen's Amazon United States niche tracking, zinc capsules is a $67K/yr Amazon United States market (47K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Jan. Verdict: Skip it — 31/100.

Data updated Jul 28, 2026 · scored weekly · How we score niches

zinc capsules market data

Units sold / yr: 8K–10K; avg 750–1,000/product
Revenue / yr: $72K–$91K; units × avg price
Conversion rate: 15.6%
Avg BSR: #272
Page quality: 0%
Prime: 100%
Sponsored: 88%
Out of stock: 0.0%
Avg brand age: 101 months
Avg seller age: 162 days

Competition & brand share

The top 5 products capture 88% of clicks — a locked-up shelf that new listings rarely crack.

Brands

5 falling

Sellers

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

88%

Top 20: 100%

Open market

Life Extension74%
Amazon Basics11%
Nature's Bounty6%
Pure Encapsulations5%
Bronson4%
Open — no brand owns it (0%)

Demand & seasonality

Weekly Amazon search volume, last 100 weeks — -12.6% search growth over the last 90 days.

Peak months: Jan · busiest ÷ quietest = 1.6×

Open Trend

Top zinc capsules search terms

zinc capsules22K/yr -16.1%7.1% conv.
life extension zinc15K/yr -10.1%17.6% conv.
zinc life extension4K/yr -6.4%16.9% conv.
zinc capsules 50mg4K/yr +3.3%11.1% conv.
life extension zinc 50 mg2K/yr -30.6%37.7% conv.

All search terms

Top zinc capsules 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 8 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Life Extension Zinc Caps zinc 50 mg zinc Citrate Support The Bodys Immune defenses Ultra-absorbable Vegetarian Non-GMO Gluten-Free 90 Vegetarian Capsules

Life Extension$6.374.7★8,173 rev

Amazon Basics Zinc Capsules 50 mg 200 Count

Amazon Basics$5.884.7★582 rev

Natures Bounty Zinc 50mg Immune Support & Antioxidant Supplement Promotes Skin Health 1 Caplet Per Day Gluten Free 250 Vegetarian Caplets

Nature's Bounty$8.544.7★215,458 rev

Pure Encapsulations Zinc 30 mg - Supplement for Immune System Support Growth and Development and Wound Healing* - with Zinc Picolinate 30 mg - 60 Capsules

Pure Encapsulations$15.594.8★14,901 rev

Life Extension Zinc Lozenges Citrus-Orange Flavor for Healthy Protein Synthesis & Immune Health - Inflammation Management Supplement - Gluten-Free Non-GMO 60 Vegetarian Lozenges

Life Extension$6.264.5★1,351 rev

Newest

by launch date

Amazon Basics Zinc Capsules 50 mg 200 Count

Amazon Basics$5.88582 rev

6mo ago

Bronson Zinc Glycinate 30mg Chelated Superior Absorption 100% Chelated Formula Non-GMO 120 Vegetarian Capsules

Bronson$10.03236 rev

9mo ago

Natures Bounty Zinc 50mg Immune Support & Antioxidant Supplement Promotes Skin Health 1 Caplet Per Day Gluten Free 250 Vegetarian Caplets

Nature's Bounty$8.54215,458 rev

5y ago

Life Extension Enhanced Zinc Lozenges zinc Acetate Optimal Immune Support Strong Immune Response Ionic zinc Non-GMO Gluten-Free Vegetarian 30 lozenges

Life Extension$9.291,364 rev

10y ago

Life Extension Only Trace Minerals a Daily dose of zinc Chromium Boron Copper Manganese Vanadyl sulfate Gluten-Free Non-GMO Vegetarian 90 Capsules

Life Extension$10.501,474 rev

12y ago

What buyers say about zinc capsules

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

What buyers love

Quality-Overall17%

“the quality has been consistent every time I've purchased them”

Value For Money16%

“Great value”

Vitamin8%

“Great vitamin for your health”

Ease Of Chewing/Swallowing8%

“easy to take with a sip of water”

Advertised Vs Actual Product7%

“Works as indicated”

Immunity Booster5%

“This has helped with boosting my immune system”

Dosage3%

“which is a solid dose without being excessive”

Efficiency3%

“Does the job, no problems”

Cold Relief3%

“Helps colds get better”

Iron2%

“Easy to recommend Zinc supplement”

What buyers complain about

Size-Overall12%

“Tiny”

Dosage9%

“Am not sure if the dosage I ordered was too high”

Ingredients-Overall5%

“Everything else, including Life Extensions citrus flavored Zinc, is out zinc gluconate”

Acid Regulator/Stomach Ache Relief5%

“I had nausea, shakes, horrible stabbing stomach pain and couldnt eat or move from the couch for 24 hrs”

Taste-Overall5%

“This is essentially a chalky tablet that does not taste good”

Side Effects3%

“got sick immediately”

Ease Of Chewing/Swallowing3%

“Very hard to swallow”

Quality-Overall3%

“Cheap”

Ease Of Use3%

“Cant use”

Vitamin3%

“I have never bought Amazon basics vitamins”

Top return reasons

Dosage25%

Functionality-Overall19%

Vegan/Organic19%

Joint Pain6%

Contamination6%

Strength6%

Vitamin6%

Taste-Overall6%