---
title: "Zinc Sulfate — $137K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/zinc-sulfate"
last_updated: "2026-08-09T11:03:37.248Z"
locale: en
meta:
description: "Niche score 41/100 · $137K/yr market · 110K searches/yr · $11.70 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 41/100 · $137K/yr market · 110K searches/yr · $11.70 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Zinc Sulfate — $137K/yr Amazon US Niche (2026) - Flapen"
---
# **zinc sulfate**
**Skip it**
A deep review moat (22,214 avg reviews) — this niche doesn't clear our bar today.
Market size 30Growth 28Conversion 90Competition 18Returns 100Price range 26Avg price 48Brand share 38Review moat 15Quality gap 20
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Conversion**
**Great****10.7%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Okay****$11.70**
avg listing price — sweet spot $15–$100
**Brand share**
**Okay****82%**
top-5 brand share — brands hold most of the demand
**Market size**
**Okay****$137K**
$137K/yr · 110K searches
**Growth**
**Okay****+2.3%**
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**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Competition**
**Bad****78%**
top-5 click share — a locked-up shelf
**Review moat**
**Bad****22,214.45**
avg incumbent reviews — the moat a new listing must climb
According to Flapen's Amazon United States niche tracking, zinc sulfate is a $137K/yr Amazon United States market (110K searches/yr). The top 5 brands hold 82% of demand. Verdict: Skip it — 41/100.
Data updated Jul 28, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **zinc sulfate market data**
- **Units sold / yr**
- **10K–13K**
- avg 1,000–1,250/product
- **Revenue / yr**
- **$117K–$146K**
- units × avg price
- **Conversion rate**
- **10.7%**
- **Avg BSR**
- **#159**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **82%**
- **Out of stock**
- **0.6%**
- **Avg brand age**
- **103 months**
- **Avg seller age**
- **171 days**
## **Competition & brand share**
The top 5 products capture 78% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**10 **▲rising
**Sellers**
**38**
**Top-5 brand share**
**82%**
Top 20: 100%
**Top-5 click share**
**78%**
Top 20: 100%
**Open market**
**14%**
- P Puregen Labs51% - RUGBY LABORATORIES12% - Nutricost9% - Earth Harmony Naturals6% - Pure Encapsulations5% - Nature's Bounty4% - Open — no brand owns it (4 brands, 14%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +2.3% search growth over the last 90 days.
3K2KHoliday '24Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.2×
[**Open Trend **](https://flapen.com/research/us/health-household/zinc-sulfate/trend)
## **Top zinc sulfate search terms**
- **zinc sulfate**65K/yr-1.7%6.9% conv. - **zinc sulfate 220 mg**17K/yr+8.4%19.7% conv. - **sulfato de zinc**9K/yr+21.6%3.7% conv. - **sulfato de zinc para adultos**9K/yr+10.0%6.6% conv. - **zinc 220mg**4K/yr-13.7%18.6% conv. - **zinc sulphate**3K/yr-21.8%4.5% conv. - **zincate**2K/yr+92.3%3.4% conv. [**All search terms **](https://flapen.com/research/us/health-household/zinc-sulfate/search-terms)
## **Top zinc sulfate 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.
0%15%$21K30%$41K45%$62K60%$82K101001K10K100K1.0M Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 11 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1![Zinc 220mg [High Potency] Supplement Zinc Sulfate for Immune Support System 100 Tablets](https://m.media-amazon.com/images/I/31XBid6OqoL.jpg)**Zinc 220mg \[High Potency\] Supplement Zinc Sulfate for Immune Support System 100 Tablets**P Puregen Labs**$9.93**4.7★4,203 rev](https://www.amazon.com/dp/B08P7TM22H) [2**Rugby Zinc Sulfate 220 mg Tablets - Made with Zinc Sulfate Heptahydrate - Dietary Supplement - 100 Count (1 Pack)**RUGBY LABORATORIES**$7.24**4.7★2,041 rev](https://www.amazon.com/dp/B087RSQ565) [3**Nutricost Zinc Sulfate (50mg) 120 Tablets - Vegan GMO-Free Gluten-Free**Nutricost**$9.39**4.5★28 rev](https://www.amazon.com/dp/B0GXLGPKSM) [4**Organic Liquid Zinc Sulfate - Pure Zinc Supplements for Skin Health Immune System Function and Normal Cell Growth in Adult Men & Women - Non-GMO Vegan 7.5mg - 2 Fl Oz**Earth Harmony Naturals**$16.05**4.7★300 rev](https://www.amazon.com/dp/B08M23SBKK) [5**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**$15.59**4.8★14,901 rev](https://www.amazon.com/dp/B00083B1DY)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Nutricost Zinc Sulfate (50mg) 120 Tablets - Vegan GMO-Free Gluten-Free**Nutricost**$9.39**28 rev2mo ago](https://www.amazon.com/dp/B0GXLGPKSM) [**Best Naturals Zinc Sulfate 220 mg 120 Tablets - 3rd Party Lab Tested - Made in the USA - Gluten Free & Non-GMO**Best Naturals**$12.88**51 rev1y ago](https://www.amazon.com/dp/B0DRW7Y7FY) [**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**$13.94**2,137 rev4y ago](https://www.amazon.com/dp/B09HWHZ8S2) [**Natures Bounty Zinc 50mg Immune Support & Antioxidant Supplement Promotes Skin Health 1 Caplet Per Day Gluten Free 250 Vegetarian Caplets**Nature's Bounty**$8.54**215,458 rev5y ago](https://www.amazon.com/dp/B08YLTCDTN) [![Zinc 220mg [High Potency] Supplement Zinc Sulfate for Immune Support System 100 Tablets](https://m.media-amazon.com/images/I/31XBid6OqoL.jpg)**Zinc 220mg \[High Potency\] Supplement Zinc Sulfate for Immune Support System 100 Tablets**P Puregen Labs**$9.93**4,203 rev5y ago](https://www.amazon.com/dp/B08P7TM22H)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Nutricost Zinc Sulfate (50mg) 120 Tablets - Vegan GMO-Free Gluten-Free**Nutricost**$9.39**4.5★**▲ 267%**](https://www.amazon.com/dp/B0GXLGPKSM) [**Natures Bounty Zinc 50mg Immune Support & Antioxidant Supplement Promotes Skin Health 1 Caplet Per Day Gluten Free 250 Vegetarian Caplets**Nature's Bounty**$8.54**4.7★**▲ 48%**](https://www.amazon.com/dp/B08YLTCDTN) [**Puregen Labs Zinc Sulfate 220 mg Dietary Supplement Tablets - 100 Count (Pack of 2)**P Puregen Labs**$17.72**4.7★**▲ 27%**](https://www.amazon.com/dp/B01AVKJBK8) [**Best Naturals Zinc Sulfate 220 mg 120 Tablets - 3rd Party Lab Tested - Made in the USA - Gluten Free & Non-GMO**Best Naturals**$12.88**4.8★**▲ 13%**](https://www.amazon.com/dp/B0DRW7Y7FY) [**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**$15.59**4.8★**— 2%**](https://www.amazon.com/dp/B00083B1DY)
**~~View all trending →~~**
## **What buyers say about zinc sulfate**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**18%
*“the quality has been consistent”*
**Value For Money**15%
*“Great value”*
**Vitamin**9%
*“good supplement”*
**Advertised Vs Actual Product**7%
*“Works as indicated”*
**Ease Of Chewing/Swallowing**6%
*“Easy-to-take tablets for consistent nutritional support”*
**Immunity Booster**5%
*“This has helped with boosting my immune system”*
**Dosage**4%
*“Dosage is clearly stated on the label”*
**Nutritional Content**3%
*“are known to be a good source for supplements”*
**Cold Relief**3%
*“Helps colds get better”*
**Ease Of Use**3%
*“Easy to use”*
### **What buyers complain about **
**Dosage**12%
*“Beware: dosage is too high”*
**Size-Overall**9%
*“Tiny”*
**Side Effects**8%
*“Made me so nauseous”*
**Acid Regulator/Stomach Ache Relief**6%
*“Horrible stomach pain”*
**Quality-Overall**5%
*“Cheap”*
**Ease Of Use**4%
*“Cant use”*
**Sleep Quality**4%
*“Makes me drowsy throughout the day”*
**Vitamin**4%
*“Theres not many supplements 3rd party tested”*
**Nutritional Content**3%
*“I don't actually have any evidence that these supplements are having any substantial benefits to my health”*
**Ease Of Chewing/Swallowing**3%
*“Very hard to swallow”*
### **Top return reasons **
**Dosage**29%
**Functionality-Overall**25%
**Strength**8%
**Contamination**8%
**Vitamin**8%
**Taste-Overall**8%
**Joint Pain**8%
**Ease Of Chewing/Swallowing**4%
## **Common questions**
- **Is zinc sulfate profitable to sell on Amazon United States?**
- The niche generates $137K/yr across 11 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +2.3%. Flapen's verdict: Skip it (41/100).
- **How competitive is the zinc sulfate niche?**
- 10 brands and 38 sellers compete. The top 5 products take 78% of clicks and top 5 brands hold 82% of demand.
- **What do buyers complain about in zinc sulfate?**
- Top complaints mined from reviews: Dosage, Size-Overall, Side Effects. The return rate is 0.0%.
- **When does demand for zinc sulfate peak?**
- Demand is steady year-round — the busiest month runs 1.2× the quietest.
- **What does it cost to enter the zinc sulfate niche?**
- Listings span $7.24–$17.72; the average listing price is $11.70 (sweet spot $15–$100). The average incumbent carries 22,214 reviews — the moat a new listing must climb.
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