Is zinc sulfate 220 mg tablets profitable to sell on Amazon United States?

The niche generates $21K/yr across 6 tracked products. 90-day search growth is -11.5%. Flapen's verdict: Skip it (32/100).

How competitive is the zinc sulfate 220 mg tablets niche?

4 brands and 11 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.

What do buyers complain about in zinc sulfate 220 mg tablets?

Top complaints mined from reviews: Side Effects, Size-Overall, Cold Relief. The return rate is 0.0%.

When does demand for zinc sulfate 220 mg tablets peak?

Demand peaks in Jan; the busiest month runs 1.8× the quietest.

What does it cost to enter the zinc sulfate 220 mg tablets niche?

Listings span $7.24–$17.72; the average listing price is $12.13 (sweet spot $15–$100). The average incumbent carries 2,462 reviews — the moat a new listing must climb.

zinc sulfate 220 mg tablets

Skip it

A concentrated shelf (top 5 take 100% of clicks) — this niche doesn't clear our bar today.

Conversion

Incredible23.6%

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

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Avg price

Good$12.13

avg listing price — sweet spot $15–$100

Review moat

Okay2,462

avg incumbent reviews — the moat a new listing must climb

Price range

Okay$7.24–$17.72

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

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

Growth

Bad-11.5%

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

Market size

Bad$21K

$21K/yr · 7K searches

Competition

Bad100%

top-5 click share — a locked-up shelf

Brand share

Bad100%

top-5 brand share — brand-locked demand

According to Flapen's Amazon United States niche tracking, zinc sulfate 220 mg tablets is a $21K/yr Amazon United States market (7K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Jan. Verdict: Skip it — 32/100.

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

zinc sulfate 220 mg tablets market data

Units sold / yr: 2K–2K; avg 250–500/product
Revenue / yr: $18K–$24K; units × avg price
Conversion rate: 23.6%
Avg BSR: #148
Page quality: 0%
Prime: 100%
Sponsored: 100%
Out of stock: 0.0%
Avg brand age: 127 months
Avg seller age: 176 days

Competition & brand share

The top 5 products capture 100% of clicks — a locked-up shelf that new listings rarely crack.

Brands

4 flat

Sellers

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

100%

Top 20: 100%

Open market

P Puregen Labs64%
RUGBY LABORATORIES19%
WELMATE13%
Best Naturals5%

Demand & seasonality

Weekly Amazon search volume, last 100 weeks — -11.5% search growth over the last 90 days.

Peak months: Jan · busiest ÷ quietest = 1.8×

Open Trend

Top zinc sulfate 220 mg tablets search terms

zinc 220mg4K/yr -13.7%18.8% conv.
zinc 220 mg capsules1K/yr -2.4%17.7% conv.
zinc sulfate 220 mg capsules1K/yr -17.4%16.6% conv.
zinc sulfate 220 mg tablets664/yr -5.8%9.8% conv.

All search terms

Top zinc sulfate 220 mg tablets 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 6 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Zinc 220mg [High Potency] Supplement Zinc Sulfate for Immune Support System 100 Tablets

P Puregen Labs$9.934.7★4,203 rev

Rugby Zinc Sulfate 220 mg Tablets - Made with Zinc Sulfate Heptahydrate - Dietary Supplement - 100 Count (1 Pack)

RUGBY LABORATORIES$7.244.7★2,041 rev

Zinc Sulfate 220 mg 100 Count Capsules

WELMATE$11.074.6★2,137 rev

Puregen Labs Zinc Sulfate 220 mg Dietary Supplement Tablets - 100 Count (Pack of 2)

P Puregen Labs$17.724.7★4,203 rev

WELMATE Zinc Sulfate 220 mg (50 mg Elemental Zinc) High Potency Tablets 200 Count (200 Day Supply) - Immune Support Dietary Supplement for Men & Women - Skin & Hair Health - Vegetarian Gluten Free

WELMATE$13.944.6★2,137 rev

Newest

by launch date

Best Naturals Zinc Sulfate 220 mg 120 Tablets - 3rd Party Lab Tested - Made in the USA - Gluten Free & Non-GMO

Best Naturals$12.8851 rev

1y ago

WELMATE Zinc Sulfate 220 mg (50 mg Elemental Zinc) High Potency Tablets 200 Count (200 Day Supply) - Immune Support Dietary Supplement for Men & Women - Skin & Hair Health - Vegetarian Gluten Free

WELMATE$13.942,137 rev

4y ago

Zinc 220mg [High Potency] Supplement Zinc Sulfate for Immune Support System 100 Tablets

P Puregen Labs$9.934,203 rev

5y ago

Zinc Sulfate 220 mg 100 Count Capsules

WELMATE$11.072,137 rev

6y ago

Rugby Zinc Sulfate 220 mg Tablets - Made with Zinc Sulfate Heptahydrate - Dietary Supplement - 100 Count (1 Pack)

RUGBY LABORATORIES$7.242,041 rev

6y ago

What buyers say about zinc sulfate 220 mg tablets

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

What buyers love

Quality-Overall25%

“Great product”

Gifting Purpose13%

“Gift”

Immunity Booster13%

“Zinc Helps with my immune system and fast”

Minerals13%

“Zinc is good to take”

Advertised Vs Actual Product13%

“It do the job”

Value For Money13%

“Great price on Zinc”

What buyers complain about

Side Effects26%

“Long term use can cause serious medical problems”

Size-Overall21%

“The item is much smaller than it looks in the picture”

Cold Relief7%

“I bought due to having a bad cold”

Vitamin7%

“Theres not many supplements 3rd party tested”

Quality-Overall7%

“poor quality”

Acid Regulator/Stomach Ache Relief7%

“Stomach pain even with food”

Iron5%

“Too much zinc will prevent your digestive system from absorbing copper from the foods you eat”

Regulates Digestion5%

“It can also cause serious digestive issues and vomiting”

Common questions

Is zinc sulfate 220 mg tablets profitable to sell on Amazon United States?: The niche generates $21K/yr across 6 tracked products. 90-day search growth is -11.5%. Flapen's verdict: Skip it (32/100).
How competitive is the zinc sulfate 220 mg tablets niche?: 4 brands and 11 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in zinc sulfate 220 mg tablets?: Top complaints mined from reviews: Side Effects, Size-Overall, Cold Relief. The return rate is 0.0%.
When does demand for zinc sulfate 220 mg tablets peak?: Demand peaks in Jan; the busiest month runs 1.8× the quietest.
What does it cost to enter the zinc sulfate 220 mg tablets niche?: Listings span $7.24–$17.72; the average listing price is $12.13 (sweet spot $15–$100). The average incumbent carries 2,462 reviews — the moat a new listing must climb.