---
title: "Endometriosis Pain Relief — $3.5M/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/endometriosis-pain-relief"
last_updated: "2026-08-11T13:31:52.739Z"
locale: en
meta:
description: "Niche score 50/100 · $3.5M/yr market. Brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 50/100 · $3.5M/yr market. Brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Endometriosis Pain Relief — $3.5M/yr Amazon US Niche (2026) - Flapen"
---
# **endometriosis pain relief**
**Worth a look**
Shows searches that convert (20.8% search→purchase), but brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list.
Market size 96Growth 23Conversion 100Competition 16Returns 100Price range 75Avg price 60Brand share 0Review moat 24Quality gap 18
**Conversion**
**Incredible****20.8%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Market size**
**Incredible****$3.5M**
$3.5M/yr · 1.3M searches
**Price range**
**Great****$5.62–$42.67**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Avg price**
**Good****$13.20**
avg listing price — sweet spot $15–$100
**Review moat**
**Bad****6,238**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Bad****-3.3%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Competition**
**Bad****81%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, endometriosis pain relief is a $3.5M/yr Amazon United States market (1.3M searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Feb–Mar–Apr–May–Jun. Verdict: Worth a look — 50/100.
Data updated Jul 11, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **endometriosis pain relief market data**
- **Units sold / yr**
- **250K–300K**
- avg 20,000–25,000/product
- **Revenue / yr**
- **$3.3M–$4.0M**
- units × avg price
- **Conversion rate**
- **20.8%**
- **Avg BSR**
- **#93**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **100%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **62 months**
- **Avg seller age**
- **149 days**
## **Competition & brand share**
The top 5 products capture 81% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**4 **—flat
**Sellers**
**53**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**81%**
Top 20: 100%
**Open market**
**0%**
- Midol76% - Pamprin15% - HealthA2Z6% - Cramp Defense3%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -3.3% search growth over the last 90 days.
25K15KSpike '24Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Feb, Mar, Apr, May, Jun · busiest ÷ quietest = 7.3×
[**Open Trend **](https://flapen.com/research/us/health-household/endometriosis-pain-relief/trend)
## **Top endometriosis pain relief search terms**
- **midol**604K/yr-8.8%21.9% conv. - **midol complete maximum strength**119K/yr+103.1%26.4% conv. - **pamprin**140K/yr+0.3%16.3% conv. - **midol menstrual extra strength**128K/yr-60.2%18.5% conv. - **pamprin maximum strength**51K/yr+1.8%14.2% conv. - **cramp defense**32K/yr-4.1%17.2% conv. - **endometriosis pain relief**40K/yr-46.9%0.2% conv. - **midol complete**25K/yr-19.6%11.7% conv. - **midol extra strength**17K/yr+9.2%11.4% conv. - **pamprin maximum strength multi-symptom menstrual relief tablets**15K/yr+15.4%13.5% conv. [**All search terms **](https://flapen.com/research/us/health-household/endometriosis-pain-relief/search-terms)
## **Top endometriosis pain relief 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%$518K30%$1.0M45%$1.6M60%$2.1M1001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 10 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Midol Complete Menstrual Pain Relief Caplets 40 Count - Provides Cramp Headache and Bloating Relief**Midol**$8.25**4.8★19,404 rev](https://www.amazon.com/dp/B000GGFYRW) [2**Pamprin Multi-Symptom Formula with Acetaminophen Menstrual Period Symptoms Relief including Cramps Pain Bloating and Irritability 40 Caplets**Pamprin**$6.99**4.7★10,286 rev](https://www.amazon.com/dp/B0014G59F0) [3**Midol Complete Gelcaps : Midol Complete Menstrual Pain Relief Gelcaps with Acetaminophen for Menstrual Symptom Pms Relief and Period Cramp Relief - 24 Count**Midol**$6.42**4.8★4,745 rev](https://www.amazon.com/dp/B000052WOZ) [4**Midol Complete Menstrual Pain Relief Caplets with Acetaminophen for Period Cramps and Menstrual Symptom Relief - 40 Count (Pack of 3) (Packaging May Vary)**Midol**$23.85**4.8★3,202 rev](https://www.amazon.com/dp/B07KKXTNK1) [5**HealthA2Z Menstrual Complete Pain Relief Tablets | Relieves Cramps Bloating Fatigue Backache & Headache (120 Counts)**HealthA2Z**$10.94**4.8★900 rev](https://www.amazon.com/dp/B0DLQNJDJS)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**HealthA2Z Menstrual Complete Pain Relief Tablets | Relieves Cramps Bloating Fatigue Backache & Headache (120 Counts)**HealthA2Z**$10.94**900 rev1y ago](https://www.amazon.com/dp/B0DLQNJDJS) [**Midol Bloat Relief Caplets with Pamabrom Relieve Bloating Symptoms Before and During Your Period Provides Up to 6 Hours of Relief for Women 60 Count**Midol**$13.54**2,774 rev5y ago](https://www.amazon.com/dp/B08W3JHG19) [**Midol Complete Caffeine Free Caplets 24ct: Midol Complete Caffeine Free Menstrual Pain Relief Caplets with Acetaminophen Provides Headache Relief and Period Cramps Relief 24 Count**Midol**$6.31**2,214 rev5y ago](https://www.amazon.com/dp/B08WD8Z9B1) [**Midol Complete Menstrual Pain Relief Caplets with Acetaminophen for Period Cramps and Menstrual Symptom Relief - 40 Count (Pack of 3) (Packaging May Vary)**Midol**$23.85**3,202 rev7y ago](https://www.amazon.com/dp/B07KKXTNK1) [**Midol Long Lasting Relief 20ct: Midol Long Lasting Relief Menstrual Symptom Reliever & Fever Reducer Caplets with Acetaminophen for Menstrual Pain Relief - 20 Count (Packaging May Vary)**Midol**$7.45**3,359 rev8y ago](https://www.amazon.com/dp/B01M7VGIFW)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Midol Bloat Relief Caplets with Pamabrom Relieve Bloating Symptoms Before and During Your Period Provides Up to 6 Hours of Relief for Women 60 Count**Midol**$13.54**4.6★**▲ 36%**](https://www.amazon.com/dp/B08W3JHG19) [**Pamprin Multi-Symptom Formula with Acetaminophen Menstrual Period Symptoms Relief including Cramps Pain Bloating and Irritability 40 Caplets**Pamprin**$6.99**4.7★**▲ 13%**](https://www.amazon.com/dp/B0014G59F0) [**Midol Complete Menstrual Pain Relief Caplets 40 Count - Provides Cramp Headache and Bloating Relief**Midol**$8.25**4.8★**— 10%**](https://www.amazon.com/dp/B000GGFYRW) [**HealthA2Z Menstrual Complete Pain Relief Tablets | Relieves Cramps Bloating Fatigue Backache & Headache (120 Counts)**HealthA2Z**$10.94**4.8★**— 1%**](https://www.amazon.com/dp/B0DLQNJDJS) [**Cramp Defense Leg Cramps Pills Relief for All Muscle Cramps Day and Night. Magnesium Supplement Capsules 3-6 Month Supply. Non-Laxative Organic Formula for Max Absorption and Results. Made in US.**Cramp Defense**$42.67**4.3★**— 5%**](https://www.amazon.com/dp/B01MFGOWAC)
**~~View all trending →~~**
## **What buyers say about endometriosis pain relief**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Muscle Pain Relief**19%
*“Reducing back pain”*
**Efficiency**13%
*“It works, quickly and consistently”*
**Menstrual Issues**10%
*“The best product for period cramps”*
**Quality-Overall**7%
*“no complaints so far”*
**Value For Money**7%
*“Best price”*
**Joint Pain**6%
*“My knee pain seems to respond best to Aspirine/tylonol combo”*
**Caffeine Content**4%
*“this caffeine free option is great”*
**Sleep Quality**4%
*“A good night's sleep”*
**Ease Of Use**2%
*“Easy to use”*
**Advertised Vs Actual Product**2%
*“Great as advertised”*
### **What buyers complain about **
**Functionality-Overall**15%
*“It doesnt help”*
**Dosage**11%
*“When I read the back label I was concerned that the dose wasn't high enough”*
**Muscle Pain Relief**10%
*“Not defending the cramps”*
**Value For Money**8%
*“Pricey”*
**Pain Relief-Overall**7%
*“foot cramps waking me up every night”*
**Sleep Quality**6%
*“dont take at night”*
**Side Effects**6%
*“It only makes my symptoms worse”*
**Size-Overall**3%
*“The pill is a bit big”*
**Magnesium**2%
*“He has tried high doses of magnesium with no relief”*
**Regulates Digestion**2%
*“be warned—it also causes some pretty bad constipation which leads to pain of another kind”*
### **Top return reasons **
**Size-Overall**50%
**Ingredients-Overall**25%
**Muscle Pain Relief**25%
## **Common questions**
- **Is endometriosis pain relief profitable to sell on Amazon United States?**
- The niche generates $3.5M/yr across 10 tracked products. 90-day search growth is -3.3%. Flapen's verdict: Worth a look (50/100).
- **How competitive is the endometriosis pain relief niche?**
- 4 brands and 53 sellers compete. The top 5 products take 81% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in endometriosis pain relief?**
- Top complaints mined from reviews: Functionality-Overall, Dosage, Muscle Pain Relief. The return rate is 0.0%.
- **When does demand for endometriosis pain relief peak?**
- Demand peaks in Feb–Mar–Apr–May–Jun; the busiest month runs 7.3× the quietest.
- **What does it cost to enter the endometriosis pain relief niche?**
- Listings span $5.62–$42.67; the average listing price is $13.20 (sweet spot $15–$100). The average incumbent carries 6,238 reviews — the moat a new listing must climb.
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