---
title: "Ferrous Sulfate 325mg with Vitamin C — $57K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/ferrous-sulfate-325mg-with-vitamin-c"
last_updated: "2026-08-09T21:43:12.752Z"
locale: en
meta:
description: "Niche score 40/100 · $57K/yr market · 36K searches/yr · $12.99 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 40/100 · $57K/yr market · 36K searches/yr · $12.99 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Ferrous Sulfate 325mg with Vitamin C — $57K/yr Amazon US Niche (2026) - Flapen"
---
# **ferrous sulfate 325mg with vitamin c**
**Skip it**
A small market ($57K/yr) — this niche doesn't clear our bar today.
Market size 14Growth 29Conversion 95Competition 15Returns 100Price range 54Avg price 58Brand share 30Review moat 21Quality gap 23
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Conversion**
**Incredible****12.1%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Good****$12.99**
avg listing price — sweet spot $15–$100
**Price range**
**Good****$6.13–$25.51**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Okay****87%**
top-5 brand share — brands hold most of the demand
**Growth**
**Okay****+3.1%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Bad****4.6★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Bad****11,323.89**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Bad****82%**
top-5 click share — a locked-up shelf
**Market size**
**Bad****$57K**
$57K/yr · 36K searches
According to Flapen's Amazon United States niche tracking, ferrous sulfate 325mg with vitamin c is a $57K/yr Amazon United States market (36K searches/yr). The top 5 brands hold 87% of demand. Verdict: Skip it — 40/100.
Data updated Jul 28, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **ferrous sulfate 325mg with vitamin c market data**
- **Units sold / yr**
- **4K–5K**
- avg 250–500/product
- **Revenue / yr**
- **$52K–$65K**
- units × avg price
- **Conversion rate**
- **12.1%**
- **Avg BSR**
- **#83**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **89%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **86 months**
- **Avg seller age**
- **156 days**
## **Competition & brand share**
The top 5 products capture 82% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**8 **▼falling
**Sellers**
**93**
**Top-5 brand share**
**87%**
Top 20: 100%
**Top-5 click share**
**82%**
Top 20: 100%
**Open market**
**8%**
- Vitamatic58% - Heivy9% - THORNE8% - NUTRAHARMONY7% - Vitron-C5% - P Puregen Labs5% - Open — no brand owns it (2 brands, 8%)
## **Demand**
Weekly Amazon search volume, last 20 weeks — +3.1% search growth over the last 90 days.
900700Mar '26Apr '26Apr '26May '26Jun '26Jun '26Jul '26
[**Open Trend **](https://flapen.com/research/us/health-household/ferrous-sulfate-325mg-with-vitamin-c/trend)
## **Top ferrous sulfate 325mg with vitamin c search terms**
- **ferrous sulfate 325mg with vitamin c**25K/yr+2.6%12.1% conv. - **ferrous sulfate with vitamin c**6K/yr+8.2%9.0% conv. - **iron 325 mg with vitamin c**4K/yr-0.3%10.2% conv. [**All search terms **](https://flapen.com/research/us/health-household/ferrous-sulfate-325mg-with-vitamin-c/search-terms)
## **Top ferrous sulfate 325mg with vitamin c 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%$8K30%$17K45%$25K60%$34K1001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 9 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**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**$14.48**4.7★1,069 rev](https://www.amazon.com/dp/B0D2Q4BF6H) [2**Heivy Ferrous Sulfate 325mg with Vitamin C 100mg 240 Vegan Tablets**Heivy**$8.93**4.6★341 rev](https://www.amazon.com/dp/B0DSCHVJ37) [3**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**$25.51**4.6★4,282 rev](https://www.amazon.com/dp/B0797PJQMT) [4**Iron Supplement for Women - Iron 65mg (Ferrous Sulfate 325mg) - 60 Caps**NUTRAHARMONY**$17.76**4.6★2,124 rev](https://www.amazon.com/dp/B0D47FBQP6) [5**Vitamatic Ferrous Gluconate 324 mg + Vitamin C 100 mg - No Artificial Color Additives - Gentle on Stomach - 250 Tablets - Made in USA**Vitamatic**$9.99**4.6★523 rev](https://www.amazon.com/dp/B0DPNNXG77)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Heivy Ferrous Sulfate 325mg with Vitamin C 100mg 240 Vegan Tablets**Heivy**$8.93**341 rev1y ago](https://www.amazon.com/dp/B0DSCHVJ37) [**Vitamatic Ferrous Gluconate 324 mg + Vitamin C 100 mg - No Artificial Color Additives - Gentle on Stomach - 250 Tablets - Made in USA**Vitamatic**$9.99**523 rev1y ago](https://www.amazon.com/dp/B0DPNNXG77) [**Iron Supplement for Women - Iron 65mg (Ferrous Sulfate 325mg) - 60 Caps**NUTRAHARMONY**$17.76**2,124 rev2y ago](https://www.amazon.com/dp/B0D47FBQP6) [**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**$14.48**1,069 rev2y ago](https://www.amazon.com/dp/B0D2Q4BF6H) [**Puregen Labs Ferrous Sulfate 325 mg (65 mg Elemental Iron) High Potency Iron Supplement | No Artificial Color Additives - 200 Tablets**P Puregen Labs**$10.02**3,990 rev2y ago](https://www.amazon.com/dp/B0CPKF8BC2)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Vitamatic Ferrous Gluconate 324 mg + Vitamin C 100 mg - No Artificial Color Additives - Gentle on Stomach - 250 Tablets - Made in USA**Vitamatic**$9.99**4.6★**▲ 66%**](https://www.amazon.com/dp/B0DPNNXG77) [**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**$25.51**4.6★**▲ 44%**](https://www.amazon.com/dp/B0797PJQMT) [**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**$14.48**4.7★**— 7%**](https://www.amazon.com/dp/B0D2Q4BF6H) [**Iron Supplement for Women - Iron 65mg (Ferrous Sulfate 325mg) - 60 Caps**NUTRAHARMONY**$17.76**4.6★**— 4%**](https://www.amazon.com/dp/B0D47FBQP6) [**Pure Encapsulations Iron-C - 15 mg - 175 mg Vitamin C - Red Blood Cell Support* - Energy Production - Highly Bioavailable Iron Pill - for Women & Men - Gluten Free & Vegan - 60 Capsules**Pure Encapsulations**$13.43**4.7★**— 8%**](https://www.amazon.com/dp/B0017HQDVK)
**~~View all trending →~~**
## **What buyers say about ferrous sulfate 325mg with vitamin c**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Iron**20%
*“Great iron pills”*
**Quality-Overall**14%
*“Good quality arrived quickly”*
**Value For Money**9%
*“Good value for price”*
**Advertised Vs Actual Product**8%
*“As advertised”*
**Vitamin**5%
*“Good quality vitamins”*
**Acid Regulator/Stomach Ache Relief**4%
*“No upset stomach or constipation”*
**Efficiency**4%
*“DOES THE JOB”*
**Energy Level**4%
*“Give me Energy”*
**Ease Of Use**3%
*“Convenient to use”*
**Ease Of Chewing/Swallowing**3%
*“Easy to Swallow”*
### **What buyers complain about **
**Iron**19%
*“I had very low iron levels”*
**Taste-Overall**13%
*“Horrible Taste”*
**Acid Regulator/Stomach Ache Relief**7%
*“Hurt my stomach horribly”*
**Side Effects**6%
*“Made me extremely dizzy”*
**Allergies**2%
*“My face has rash all over”*
**Smell**2%
*“Smell”*
**Regulates Digestion**2%
*“Causes constipation”*
**Value For Money**2%
*“Expensive”*
**Advertised Vs Actual Product**2%
*“False advertisement”*
**Vitamin**2%
*“These are the worse vitamins that Ive EVER taken”*
### **Top return reasons **
**Iron**23%
**Acid Regulator/Stomach Ache Relief**23%
**Regulates Digestion**8%
**Value For Money**7%
**Functionality-Overall**7%
**Advertised Vs Actual Product**7%
**Dosage**4%
**Side Effects**4%
**Product Condition**4%
**Vitamin**4%
## **Common questions**
- **Is ferrous sulfate 325mg with vitamin c profitable to sell on Amazon United States?**
- The niche generates $57K/yr across 9 tracked products. 90-day search growth is +3.1%. Flapen's verdict: Skip it (40/100).
- **How competitive is the ferrous sulfate 325mg with vitamin c niche?**
- 8 brands and 93 sellers compete. The top 5 products take 82% of clicks and top 5 brands hold 87% of demand.
- **What do buyers complain about in ferrous sulfate 325mg with vitamin c?**
- Top complaints mined from reviews: Iron, Taste-Overall, Acid Regulator/Stomach Ache Relief. The return rate is 0.0%.
- **What does it cost to enter the ferrous sulfate 325mg with vitamin c niche?**
- Listings span $6.13–$25.51; the average listing price is $12.99 (sweet spot $15–$100). The average incumbent carries 11,324 reviews — the moat a new listing must climb.
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