---
title: "Weight Gainer for Women — $591K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/weight-gainer-for-women"
last_updated: "2026-08-09T14:32:47.183Z"
locale: en
meta:
description: "Niche score 57/100 · $591K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 57/100 · $591K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Weight Gainer for Women — $591K/yr Amazon US Niche (2026) - Flapen"
---
# **weight gainer for women**
**Worth a look**
Shows low returns (0.0%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 64Growth 19Conversion 22Competition 46Returns 100Price range 88Avg price 95Brand share 69Review moat 25Quality gap 83
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Avg price**
**Incredible****$34.05**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$10.26–$64.91**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Great****4.2★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Good****64%**
top-5 brand share — brands hold most of the demand
**Market size**
**Good****$591K**
$591K/yr · 976K searches
**Competition**
**Okay****58%**
top-5 click share — leaders hold, buyers still browse
**Review moat**
**Bad****4,857.13**
avg incumbent reviews — the moat a new listing must climb
**Conversion**
**Bad****1.8%**
search→purchase rate — share of searches ending in a sale
**Growth**
**Bad****-12.5%**
90-day search growth — must beat 0% to launch
**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=us&signal=no_dominant_brand "Top brand's click share < 20%")
According to Flapen's Amazon United States niche tracking, weight gainer for women is a $591K/yr Amazon United States market (976K searches/yr). The top 5 brands hold 64% of demand. Verdict: Worth a look — 57/100.
Data updated Jul 17, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **weight gainer for women market data**
- **Units sold / yr**
- **15K–20K**
- avg 500–750/product
- **Revenue / yr**
- **$511K–$681K**
- units × avg price
- **Conversion rate**
- **1.8%**
- **Avg BSR**
- **#497**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **74%**
- **Out of stock**
- **1.9%**
- **Avg brand age**
- **58 months**
- **Avg seller age**
- **142 days**
## **Competition & brand share**
The top 5 products take 58% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**16 **▼falling
**Sellers**
**45**
**Top-5 brand share**
**64%**
Top 20: 100%
**Top-5 click share**
**58%**
Top 20: 97%
**Open market**
**31%**
- Natures Craft17% - Rosamin17% - Supragenix11% - Jadee10% - Naturade9% - BOOST6%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -12.5% search growth over the last 90 days.
25K15KSpike '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.4×
[**Open Trend **](https://flapen.com/research/us/health-household/weight-gainer-for-women/trend)
## **Top weight gainer for women search terms**
- **weight gainer for women**346K/yr-13.3%1.9% conv. - **weight gain**182K/yr-39.1%1.3% conv. - **weight gain pills**79K/yr+1.3%1.5% conv. - **rosamin weight gaining pills**37K/yr+40.9%1.8% conv. - **rosamin**26K/yr+63.3%1.4% conv. - **gain weight for women**55K/yr-13.3%1.6% conv. - **weight gain supplements**40K/yr-13.4%1.2% conv. - **weight gain supplements for women**30K/yr-0.4%1.2% conv. - **weight gain gummies**20K/yr+6.0%0.7% conv. - **gain weight**27K/yr-41.1%0.8% conv. [**All search terms **](https://flapen.com/research/us/health-household/weight-gainer-for-women/search-terms)
## **Top weight gainer for women 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%5%$30K10%$59K15%$89K20%$118K1101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 23 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Rosamin Weight Gaining Pills (1Set(2Bottle))**Rosamin**$32.28**2.6★7 rev](https://www.amazon.com/dp/B0H15YX485) [2**G-Curve Butt and Breast Growth Capsules - Horny Goat Weed Muira Puama & Maca Root for Butt Growth Support - Advanced Herbal Formula - Supports Bigger Butt & Bigger Breast - Easy to Swallow - 60 Count**Natures Craft**$10.37**4.0★8,490 rev](https://www.amazon.com/dp/B01IVI8D92) [3**Supragenix CB-1 Weight Gainer Pills (90 Count) | Weight Gain Support for Women & Men | Clinically Tested Appetite Booster | Powerful Mass Gainer**Supragenix**$64.91**4.2★571 rev](https://www.amazon.com/dp/B0CX3P86NB) [4**Naturade Weight Gain Nutrition Drink Mix for Healthy Weight Support Balanced Calories with Protein Vitamins & Minerals Vanilla - 20.3 oz**Naturade**$23.31**4.2★3,481 rev](https://www.amazon.com/dp/B00024CQ74) [5**Smart Weight Gainer for Women Booty Pills Curves & Shape Support for Healthy Weight Gain Hips & Glutes Easy Alternative to Shakes 60 Pills with Aguaje Pueraria Mirifica Dong Quai & more**Jadee**$21.20**4.2★492 rev](https://www.amazon.com/dp/B0BSV839RB)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Rosamin Weight Gaining Pills (1Set(2Bottle))**Rosamin**$32.28**7 rev2mo ago](https://www.amazon.com/dp/B0H15YX485) [**Booty Gainer Pro Series - Weight/Muscle Gainer for Women to Grow Thicker Booty & Larger Buttox | Helps Naturally Curve & Shape Body | Grow Rounder Wider & Thicker Glutes - 60 Capsules**EPN Supplements**$37.14**138 rev1y ago](https://www.amazon.com/dp/B0F84PQJ7G) [**BBL Gummies for Womens Curves - Weight Gainer for Women with Aguaje Pueraria Mirifica & Fenugreek | Bigger Butt Growth & Hips Enhancement Booty Gummies Curves & Feminine Weight Gain (60 Gummies)**Jadee**$19.50**99 rev1y ago](https://www.amazon.com/dp/B0DYZMYLNY) [**Holistic MD Gainer Gummies for Women Men Elderly and Kids | Clinically Studied Ingredients | 10 in 1 with L-Lysine Gentian Root Vitamin B | Non-GMO Sugar Free Vegan | 60 Count**Holistic MD**$22.20**256 rev1y ago](https://www.amazon.com/dp/B0DXCR82BP) [**Apetigen-Plus Appetite Stimulant for Weight Gain Multivitamin with Iron Zinc L-Lysine & B-Complex Appetite Booster Tablets for Adults & Kids 12+ Sugar Free No Fish Oil 60 Count**Apetigen**$25.31**71 rev1y ago](https://www.amazon.com/dp/B0DPBF8QGB)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Rosamin Weight Gaining Pills (1Set(2Bottle))**Rosamin**$32.28**2.6★**▲ 246%**](https://www.amazon.com/dp/B0H15YX485) [**BOOST Very High Calorie Nutritional Drink - Helps Weight Gain & Maintenance - 530 Calories - 26 Vitamins & Minerals - 22 g Protein - Calorie-Dense Nutritional Drink - Creamy Strawberry - 8 fl oz (Pack of 24)**BOOST**$56.68**4.6★**▲ 224%**](https://www.amazon.com/dp/B07T3KYH4N) [**Apetigen-Plus Appetite Stimulant for Weight Gain Multivitamin with Iron Zinc L-Lysine & B-Complex Appetite Booster Tablets for Adults & Kids 12+ Sugar Free No Fish Oil 60 Count**Apetigen**$25.31**4.3★**▲ 211%**](https://www.amazon.com/dp/B0DPBF8QGB) [**Smart Weight Gainer for Women Booty Pills Curves & Shape Support for Healthy Weight Gain Hips & Glutes Easy Alternative to Shakes 60 Pills with Aguaje Pueraria Mirifica Dong Quai & more**Jadee**$21.20**4.2★**▲ 101%**](https://www.amazon.com/dp/B0BSV839RB) [**Naturade Weight Gain Nutrition Drink Mix for Healthy Weight Support Balanced Calories with Protein Vitamins & Minerals Vanilla - 40.6 oz**Naturade**$39.93**4.2★**▲ 74%**](https://www.amazon.com/dp/B00791Q5Q6)
**~~View all trending →~~**
## **What buyers say about weight gainer for women**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Taste-Overall**22%
*“No weird taste”*
**Weight Loss**10%
*“it really helps with putting on weight”*
**Quality-Overall**9%
*“Arrived quickly and seems like good quality”*
**Nutritional Content**6%
*“Good nutrition”*
**Flavor**5%
*“Excellent flavor”*
**Weight Gain**4%
*“Helps you gain weight”*
**Efficiency**4%
*“Works well”*
**Ease Of Use**4%
*“Easy to use”*
**Energy Level**4%
*“Great energy”*
**Value For Money**3%
*“Good price”*
### **What buyers complain about **
**Taste-Overall**15%
*“Not tasty”*
**Functionality-Overall**12%
*“DOESNT WORK”*
**Value For Money**6%
*“Not worth it”*
**Flavor**5%
*“Bad Flavor”*
**Weight Loss**5%
*“I saw absolutely no increase in appetite”*
**Nutritional Content**3%
*“Need more calories”*
**Thickness**2%
*“Too thick”*
**Side Effects**2%
*“Made me sick”*
**Sweetness**2%
*“makes it extra sweet”*
**Acid Regulator/Stomach Ache Relief**2%
*“Made me very bloated”*
### **Top return reasons **
**Functionality-Overall**33%
**Ingredients-Overall**22%
**Flavor**11%
**Taste-Overall**11%
**Heart Health**11%
**Hard Feel**11%
## **Common questions**
- **Is weight gainer for women profitable to sell on Amazon United States?**
- The niche generates $591K/yr across 23 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -12.5%. Flapen's verdict: Worth a look (57/100).
- **How competitive is the weight gainer for women niche?**
- 16 brands and 45 sellers compete. The top 5 products take 58% of clicks and top 5 brands hold 64% of demand.
- **What do buyers complain about in weight gainer for women?**
- Top complaints mined from reviews: Taste-Overall, Functionality-Overall, Value For Money. The return rate is 0.0%.
- **When does demand for weight gainer for women peak?**
- Demand is steady year-round — the busiest month runs 1.4× the quietest.
- **What does it cost to enter the weight gainer for women niche?**
- Listings span $10.26–$64.91; the average listing price is $34.05 (sweet spot $15–$100). The average incumbent carries 4,857 reviews — the moat a new listing must climb.
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