ferrous sulfate 325mg
Skip itA concentrated shelf (top 5 take 88% of clicks) — this niche doesn't clear our bar today.
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Conversion
Incredible12.7%search→purchase rate — share of searches ending in a sale
Market size
Great$1.3M$1.3M/yr · 799K searches
Avg price
Good$12.48avg listing price — sweet spot $15–$100
Price range
Good$4.84–$25.51cheapest to priciest tracked listing — scored on the share inside $15–$100
Growth
Okay+8.5%90-day search growth — must beat 0% to launch
Brand share
Bad91%top-5 brand share — brand-locked demand
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Review moat
Bad12,747.11avg incumbent reviews — the moat a new listing must climb
Competition
Bad88%top-5 click share — a locked-up shelf
According to Flapen's Amazon United States niche tracking, ferrous sulfate 325mg is a $1.3M/yr Amazon United States market (799K searches/yr). The top 5 brands hold 91% of demand. Demand peaks in Aug–Sep. Verdict: Skip it — 49/100.
Data updated Jul 28, 2026 · scored weekly · How we score niches
ferrous sulfate 325mg market data
- Units sold / yr
- 100K–125K
- avg 15,000–20,000/product
- Revenue / yr
- $1.2M–$1.6M
- units × avg price
- Conversion rate
- 12.7%
- Avg BSR
- #106
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 78%
- Out of stock
- 0.0%
- Avg brand age
- 82 months
- Avg seller age
- 157 days
Competition & brand share
The top 5 products capture 88% of clicks — a locked-up shelf that new listings rarely crack.Brands
8 rising
Sellers
131
Top-5 brand share
91%
Top 20: 100%
Top-5 click share
88%
Top 20: 100%
Open market
6%
- P Puregen Labs46%
- Nature Made19%
- Nature's Bounty12%
- Vitamatic10%
- THORNE4%
- NUTRAHARMONY4%
- Open — no brand owns it (2 brands, 6%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +8.5% search growth over the last 90 days.Peak months: Aug, Sep · busiest ÷ quietest = 5.0×
Top ferrous sulfate 325mg search terms
- ferrous sulfate 325mg355K/yr
- ferrous sulfate143K/yr
- iron ferrous sulfate40K/yr
- ferrous sulfate 325 mg43K/yr
- 325 mg iron supplement31K/yr
- iron 325mg26K/yr
- sulfato ferroso23K/yr
- iron 325mg ferrous sulfate16K/yr
- iron supplement 325mg17K/yr
- ferosul iron tablets 325mg13K/yr
Top ferrous sulfate 325mg 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.
All 9 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Puregen Labs Ferrous Sulfate 325 mg (65 mg Elemental Iron) High Potency Iron Supplement | No Artificial Color Additives - 200 Tablets
P Puregen Labs$10.024.7★3,990 rev
Nature Made Iron 65 mg (325 mg Ferrous Sulfate) Tablets 180 Tablets
Nature Made$6.134.7★55,047 rev
Natures Bounty Iron 65mg 325 mg Ferrous Sulfate Cellular Energy Support Promotes Normal Red Blood Cell Production 1 Serving Per Day Gluten Free 100 Vegetarian Tablets
Nature's Bounty$4.844.7★35,936 rev
Vitamatic Ferrous Sulfate 325 mg with Vitamin C 100 mg (65 mg Elemental Iron) Coated Tablets High Potency Iron Supplement No Artificial Colors Made in USA
Vitamatic$14.484.7★1,069 rev
THORNE - Advanced Iron Complex - Complete Blood Support Formula* - Elemental Iron Folate B and C Vitamins for Optimal Absorption - Chelated Iron Supplement - Gluten Dairy & Soy-Free - 60 Capsules
THORNE$25.514.6★4,282 rev
Newest
by launch date
The Vitamin Kitchen Ferrous Sulfate 325 mg (65 mg Elemental Iron) High Potency Iron Supplement - High Potency Iron Pills for Red Blood Cells - No Artificial Color Additives - 220 Tablets Made in USA
The Vitamin Kitchen$7.24269 rev
Iron Supplement for Women - Iron 65mg (Ferrous Sulfate 325mg) - 60 Caps
NUTRAHARMONY$17.762,124 rev
Vitamatic Ferrous Sulfate 325 mg with Vitamin C 100 mg (65 mg Elemental Iron) Coated Tablets High Potency Iron Supplement No Artificial Colors Made in USA
Vitamatic$14.481,069 rev
Puregen Labs Ferrous Sulfate 325 mg (65 mg Elemental Iron) High Potency Iron Supplement | No Artificial Color Additives - 200 Tablets
P Puregen Labs$10.023,990 rev
Nature Made Iron 65 mg (from Ferrous Sulfate) Tablets for Red Blood Cell Formation (365 ct.).
Nature Made$15.932,789 rev
Trending
90-day click momentumVitamatic Ferrous Sulfate 325 mg with Vitamin C 100 mg (65 mg Elemental Iron) Coated Tablets High Potency Iron Supplement No Artificial Colors Made in USA
Vitamatic$14.484.7★
Natures Bounty Iron 65mg 325 mg Ferrous Sulfate Cellular Energy Support Promotes Normal Red Blood Cell Production 1 Serving Per Day Gluten Free 100 Vegetarian Tablets
Nature's Bounty$4.844.7★
Nature Made Iron 65 mg (from Ferrous Sulfate) Tablets for Red Blood Cell Formation (365 ct.).
Nature Made$15.934.8★
The Vitamin Kitchen Ferrous Sulfate 325 mg (65 mg Elemental Iron) High Potency Iron Supplement - High Potency Iron Pills for Red Blood Cells - No Artificial Color Additives - 220 Tablets Made in USA
The Vitamin Kitchen$7.244.6★
THORNE - Advanced Iron Complex - Complete Blood Support Formula* - Elemental Iron Folate B and C Vitamins for Optimal Absorption - Chelated Iron Supplement - Gluten Dairy & Soy-Free - 60 Capsules
THORNE$25.514.6★
What buyers say about ferrous sulfate 325mg
What buyers praise and complain about, mined from review topics.What buyers love
“Excellent Iron supplement”
“Excellent Product”
“Great deal”
“As advertised”
“Great vitamin”
“It's effective”
“Convenient to use”
“Boost energy”
“Easy to Swallow”
“No tummy upset”
What buyers complain about
“I had very low iron levels”
“Weird taste”
“Hurt my stomach horribly”
“Made me extremely dizzy”
“Causes constipation”
“Piece of garbage”
“Expensive”
“False advertisement”
“Bad filler ingredients”
“These are the worse vitamins that Ive EVER taken”
Top return reasons
Common questions
- Is ferrous sulfate 325mg profitable to sell on Amazon United States?
- The niche generates $1.3M/yr across 9 tracked products. 90-day search growth is +8.5%. Flapen's verdict: Skip it (49/100).
- How competitive is the ferrous sulfate 325mg niche?
- 8 brands and 131 sellers compete. The top 5 products take 88% of clicks and top 5 brands hold 91% of demand.
- What do buyers complain about in ferrous sulfate 325mg?
- Top complaints mined from reviews: Iron, Taste-Overall, Acid Regulator/Stomach Ache Relief. The return rate is 0.0%.
- When does demand for ferrous sulfate 325mg peak?
- Demand peaks in Aug–Sep; the busiest month runs 5.0× the quietest.
- What does it cost to enter the ferrous sulfate 325mg niche?
- Listings span $4.84–$25.51; the average listing price is $12.48 (sweet spot $15–$100). The average incumbent carries 12,747 reviews — the moat a new listing must climb.