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

The niche generates $47K/yr across 8 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +6.5%. Flapen's verdict: Skip it (35/100).

How competitive is the zinc sulfate 220 mg niche?

6 brands and 27 sellers compete. The top 5 products take 88% of clicks and top 5 brands hold 97% of demand.

What do buyers complain about in zinc sulfate 220 mg?

Top complaints mined from reviews: Side Effects, Size-Overall, Acid Regulator/Stomach Ache Relief. The return rate is 0.0%.

When does demand for zinc sulfate 220 mg peak?

Demand is steady year-round — the busiest month runs 1.5× the quietest.

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

Listings span $7.24–$17.72; the average listing price is $11.34 (sweet spot $15–$100). The average incumbent carries 28,782 reviews — the moat a new listing must climb.

zinc sulfate 220 mg

Skip it

Brand-locked demand (top 5 brands take 97% of clicks) — this niche doesn't clear our bar today.

Conversion

Incredible23.2%

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

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Avg price

Okay$11.34

avg listing price — sweet spot $15–$100

Growth

Okay+6.5%

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

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

Market size

Bad$47K

$47K/yr · 18K searches

Review moat

Bad28,782.25

avg incumbent reviews — the moat a new listing must climb

Competition

Bad88%

top-5 click share — a locked-up shelf

Brand share

Bad97%

top-5 brand share — brand-locked demand

According to Flapen's Amazon United States niche tracking, zinc sulfate 220 mg is a $47K/yr Amazon United States market (18K searches/yr). The top 5 brands hold 97% of demand. Verdict: Skip it — 35/100.

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

zinc sulfate 220 mg market data

Units sold / yr: 3K–4K; avg 500–750/product
Revenue / yr: $34K–$45K; units × avg price
Conversion rate: 23.2%
Avg BSR: #151
Page quality: 0%
Prime: 100%
Sponsored: 100%
Out of stock: 0.0%
Avg brand age: 111 months
Avg seller age: 182 days

Competition & brand share

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

Brands

6 rising

Sellers

Top-5 brand share

97%

Top 20: 100%

Top-5 click share

88%

Top 20: 100%

Open market

P Puregen Labs61%
RUGBY LABORATORIES16%
WELMATE9%
Best Naturals6%
Nutricost4%
Nature's Bounty3%
Open — no brand owns it (0%)

Demand & seasonality

Weekly Amazon search volume, last 95 weeks — +6.5% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.5×

Open Trend

Top zinc sulfate 220 mg 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

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

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

Best Naturals$12.884.8★51 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

Nutricost Zinc Sulfate (50mg) 120 Tablets - Vegan GMO-Free Gluten-Free

Nutricost$9.3928 rev

2mo ago

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

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

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

P Puregen Labs$9.934,203 rev

5y ago

What buyers say about zinc sulfate 220 mg

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

What buyers love

Quality-Overall13%

“the quality has been consistent”

Value For Money9%

“A very good value”

Dosage7%

“Dosage is clearly stated on the label”

Nutritional Content6%

“are known to be a good source for supplements”

Ease Of Chewing/Swallowing5%

“easy to swallow”

Vitamin5%

“are known to be a good source for supplements”

Advertised Vs Actual Product5%

“This company uses third party testing so I know the product is pure and as advertised”

Minerals5%

“Zinc is good to take”

Ease Of Use5%

“Easy to take”

Immunity Booster5%

“The most common effect for me is my immune system”

What buyers complain about

Side Effects13%

“Long-term overuse can lead to side effects like copper depletion or stomach issues”

Size-Overall12%

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

Acid Regulator/Stomach Ache Relief7%

“Horrible stomach pain”

Dosage6%

“That said, 50 mg is a hefty dose”

Certifications6%

“Limited Certification: While they use independent labs, Nutricost rarely submits their products for rigorous, publicly certified seals. like USP or NSF Certified for Sport”

Vitamin3%

“Theres not many supplements 3rd party tested”

Quality-Overall3%

“poor quality”

Cold Relief3%

“I bought due to having a bad cold”

Regulates Digestion2%

“It can also cause serious digestive issues and vomiting”

Iron2%

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

Common questions

Is zinc sulfate 220 mg profitable to sell on Amazon United States?: The niche generates $47K/yr across 8 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +6.5%. Flapen's verdict: Skip it (35/100).
How competitive is the zinc sulfate 220 mg niche?: 6 brands and 27 sellers compete. The top 5 products take 88% of clicks and top 5 brands hold 97% of demand.
What do buyers complain about in zinc sulfate 220 mg?: Top complaints mined from reviews: Side Effects, Size-Overall, Acid Regulator/Stomach Ache Relief. The return rate is 0.0%.
When does demand for zinc sulfate 220 mg peak?: Demand is steady year-round — the busiest month runs 1.5× the quietest.
What does it cost to enter the zinc sulfate 220 mg niche?: Listings span $7.24–$17.72; the average listing price is $11.34 (sweet spot $15–$100). The average incumbent carries 28,782 reviews — the moat a new listing must climb.