---
title: "Muscle Gainer for Men — $9K/mo Amazon US Product Research"
canonical_url: "https://flapen.com/research/us/health-household/muscle-gainer-for-men"
last_updated: "2026-08-12T10:28:40.410Z"
locale: en
meta:
description: "Amazon product research for muscle gainer for men: $9K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:description": "Amazon product research for muscle gainer for men: $9K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:title": "Muscle Gainer for Men — $9K/mo Amazon US Product Research"
---
# **Muscle Gainer for Men**
**Skip it**
Weak search conversion (1.0%) — this niche doesn't clear our bar today.
Market size 26Growth 15Conversion 12Competition 61Returns 100Price range 95Avg price 94Brand share 16Review moat 23Quality gap 47
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Price range**
**Incredible****$19.48–$89.70**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Avg price**
**Great****$46.57**
avg listing price — sweet spot $15–$100
**Competition**
**Good****48%**
top-5 click share — leaders hold, buyers still browse
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Market size**
**Okay****$104K**
$104K/yr · 225K searches
**Review moat**
**Bad****7,070.81**
avg incumbent reviews — the moat a new listing must climb
**Brand share**
**Bad****94%**
top-5 brand share — brand-locked demand
**Growth**
**Bad****-19.6%**
90-day search growth — must beat 0% to launch
**Conversion**
**Bad****1.0%**
search→purchase rate — share of searches ending in a sale
## **Is muscle gainer for men profitable on Amazon?**
According to Flapen's Amazon United States niche tracking, muscle gainer for men is a $104K/yr Amazon United States market (225K searches/yr). The top 5 brands hold 94% of demand. Demand peaks in Oct. Verdict: Skip it — 43/100.
Data updated Jul 17, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **muscle gainer for men market size & sales**
Units sold, revenue, conversion and listing quality across the tracked shelf.
- **Units sold / yr**
- **5K–6K**
- avg 250–500/product
- **Revenue / yr**
- **$233K–$279K**
- units × avg price
- **Conversion rate**
- **1.0%**
- **Avg BSR**
- **#160**
- **Page quality**
- **0%**
- **Prime**
- **91%**
- **Sponsored**
- **63%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **89 months**
- **Avg seller age**
- **138 days**
## **Competition: brands, sellers & click share**
The top 5 products take 48% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**10 **▲rising
**Sellers**
**42**
**Top-5 brand share**
**94%**
Top 20: 100%
**Top-5 click share**
**48%**
Top 20: 88%
**Open market**
**5%**
- MuscleTech38% - Dymatize18% - Mutant18% - Optimum Nutrition17% - MuscleMeds2% - Muscletech2% - Open — no brand owns it (4 brands, 5%)
## **muscle gainer for men demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -19.6% search growth over the last 90 days.
13K8KPrime Day '25Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Oct · busiest ÷ quietest = 1.7×
[**Open Trend **](https://flapen.com/research/us/health-household/muscle-gainer-for-men/trend)
## **Top muscle gainer for men search terms shoppers use**
The exact queries shoppers type, with yearly volume, growth and conversion.
- **muscletech mass gainer**37K/yr-13.4%1.0% conv. - **mass tech**38K/yr-19.5%0.5% conv. - **mass tech extreme 2000**33K/yr-8.1%0.6% conv. - **muscle tech mass gainers**34K/yr-44.9%0.8% conv. - **muscle mass gainer**12K/yr+29.8%1.2% conv. - **muscle tech mass gainer**15K/yr-19.5%0.9% conv. - **mass gainer muscletech**7K/yr-23.8%0.5% conv. - **masstech extreme 2000**9K/yr-13.8%0.8% conv. - **ganador de masa muscular**9K/yr-26.3%0.8% conv. - **mass tech protein powder**9K/yr-44.8%0.5% conv. [**All search terms **](https://flapen.com/research/us/health-household/muscle-gainer-for-men/search-terms)
## **Top muscle gainer for men products & what they sell for**
Every tracked product — its share of the shelf, its review moat, and what it sells for.
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%5%$5K10%$10K15%$16K20%$21K1001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Dymatize Super Mass Gainer Protein Powder Gourmet Vanilla 52g Protein 1g Creatine 1280 Calories 10.7g BCAAs 245g Carbs Contains Whey Protein Powder Isolate and Casein (8 Servings)**Dymatize**$40.99**4.5★9,328 rev](https://www.amazon.com/dp/B0020XQWCA) [2**Muscletech High-Protein Mass Gainer (Vanilla Milkshake 6LB) - Mass Tech Extreme 2000 Mass Gainer Protein Powder Supplement - Weight Gainer for Increase Muscle & Enhanced Recovery - Packaging May Vary**MuscleTech**$46.10**4.4★1,378 rev](https://www.amazon.com/dp/B0B9PLQVPP) [3**Optimum Nutrition Serious Mass Weight Gainer Protein Powder Mass Gainer Vitamin C and Zinc for Immune Support Creatine Chocolate 6 Pound (Packaging May Vary)**Optimum Nutrition**$49.75**4.5★34,785 rev](https://www.amazon.com/dp/B0015R36SK) [4**Mutant Mass Extreme 2500 - High Calorie Mass Gainer Whey Protein Powder with Whole Food Carbs - Muscle Building & Weight Gain for Extreme Hard Gainers - Triple Chocolate 6 lbs**Mutant**$48.39**4.4★2,766 rev](https://www.amazon.com/dp/B09F5J1CS9) [5**Muscletech Grass-Fed Whey Protein Powder (Deluxe Vanilla 1.8 lb) - Smoothie & Milkshake Mix Supports Muscle Gain & Recovery - 20g Protein - Non-GMO & Gluten-Free**MuscleTech**$25.98**4.5★2,672 rev](https://www.amazon.com/dp/B08R5FTZ52)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Mutant Mass Extreme 2500 High Calorie Mass Gainer Whey Protein Powder for Muscle Building and Weight Gain Clean Calories with Whole Food Carbs - Triple Chocolate 2.2 lb**Mutant**$23.34**2,766 rev8mo ago](https://www.amazon.com/dp/B0FXBWFPKC) [**Rule 1 Proteins Mass Gainer Chocolate Fudge 8 Servings**Rule 1 Proteins**$32.14**144 rev3y ago](https://www.amazon.com/dp/B0BJMNLHWS) [**Muscletech Nitric Oxide Supplements for Men & Women Muscle Builder (60 Capsules) - Nitric Oxide Booster Supplement Supports Muscle Gain & Performance - 400mg Peak ATP for Enhanced Strength**MuscleTech**$34.24**5,719 rev3y ago](https://www.amazon.com/dp/B0BDHF2KK4) [**Muscletech High-Protein Mass Gainer (Vanilla Milkshake 6LB) - Mass Tech Extreme 2000 Mass Gainer Protein Powder Supplement - Weight Gainer for Increase Muscle & Enhanced Recovery - Packaging May Vary**MuscleTech**$46.10**1,378 rev3y ago](https://www.amazon.com/dp/B0B9PLQVPP) [**Muscletech High-Protein Mass Gainer (Triple Chocolate Brownie 6LB) - Mass Tech Extreme 2000 Mass Gainer Protein Powder Supplement - Weight Gainer for Increase Muscle Enhanced Recovery & Strength**MuscleTech**$45.24**811 rev3y ago](https://www.amazon.com/dp/B0B9Q666L2)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Mutant Mass Extreme 2500 - High Calorie Mass Gainer Whey Protein Powder with Whole Food Carbs - Muscle Building & Weight Gain for Extreme Hard Gainers - Triple Chocolate 6 lbs**Mutant**$48.39**4.4★**▲ 355%**](https://www.amazon.com/dp/B09F5J1CS9) [**MuscleTech Pre-Workout Powder Vapor X5 - Sports Nutrition Muscle Building Supplements for Women & Men - Intense Muscle Pump Energy Powder Drink Mix - Miami Spring Break 272g (30 Servings)**MuscleTech**$22.88**4.3★**▲ 291%**](https://www.amazon.com/dp/B00LJSJMRO) [**Mutant Mass Extreme 2500 High Calorie Mass Gainer Whey Protein Powder for Muscle Building and Weight Gain Clean Calories with Whole Food Carbs - Triple Chocolate 2.2 lb**Mutant**$23.34**4.4★**▲ 285%**](https://www.amazon.com/dp/B0FXBWFPKC) [**Muscletech Whey Protein Powder (Cookies & Cream 4 Pound) - Nitro-Tech Ultimate Muscle Building Formula with Whey Protein Isolate - 30g of Protein 3g of Creatine & 6.8g of BCAA - Packaging May Vary**Muscletech**$62.33**4.6★**▲ 284%**](https://www.amazon.com/dp/B008IC0Y80) [**Rule 1 Proteins Mass Gainer Chocolate Fudge 8 Servings**Rule 1 Proteins**$32.14**4.4★**▲ 240%**](https://www.amazon.com/dp/B0BJMNLHWS)
**~~View all trending →~~**
## **What reviews say buyers love and hate about muscle gainer for men**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Taste-Overall**18%
*“It actually tastes amazing”*
**Quality-Overall**14%
*“Excellent Quality and Amazing Results🌟 Ive been using this creatine for over a year”*
**Nutritional Content**9%
*“Great protein powder”*
**Weight Loss**7%
*“Helps me put weight back on”*
**Flavor**6%
*“Nice vanilla flavor”*
**Weight Gain**4%
*“Does help you gain weight”*
**Value For Money**4%
*“Worth it”*
**Muscle Pain Relief**3%
*“enhance muscle recovery”*
**Efficiency**3%
*“effective”*
**Solubility**2%
*“Mixes easily”*
### **What buyers complain about **
**Taste-Overall**16%
*“Taste is atrocious”*
**Value For Money**7%
*“Not worth the price”*
**Nutritional Content**6%
*“less protein that way of course”*
**Size-Overall**4%
*“which is also too short”*
**Flavor**4%
*“Not a fan of the flavor”*
**Smell**3%
*“Smells awful”*
**Quality-Overall**3%
*“Bad quality not good tast and very healthy”*
**Weight Loss**3%
*“I struggle a lot to gain weight”*
**Sweetness**3%
*“chocolate is terrible”*
**Dosage**3%
*“Using scoops and grams isnt helpful — every scoop is different, and how many people weigh a powder”*
### **Top return reasons **
**Size-Overall**25%
**Advertised Vs Actual Product**25%
**Blood Sugar Level**13%
**Taste-Overall**13%
**Solubility**13%
**Ease Of Use**13%
## **Common muscle gainer for men questions**
- **Is muscle gainer for men profitable to sell on Amazon United States?**
- The niche generates $104K/yr across 32 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is -19.6%. Flapen's verdict: Skip it (43/100).
- **How competitive is the muscle gainer for men niche?**
- 10 brands and 42 sellers compete. The top 5 products take 48% of clicks and top 5 brands hold 94% of demand.
- **What do buyers complain about in muscle gainer for men?**
- Top complaints mined from reviews: Taste-Overall, Value For Money, Nutritional Content. The return rate is 0.0%.
- **When does demand for muscle gainer for men peak?**
- Demand peaks in Oct; the busiest month runs 1.7× the quietest.
- **What does it cost to enter the muscle gainer for men niche?**
- Listings span $19.48–$89.70; the average listing price is $46.57 (sweet spot $15–$100). The average incumbent carries 7,071 reviews — the moat a new listing must climb.
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