---
title: "Muscle Builder for Men — $30K/mo Amazon US Product Research"
canonical_url: "https://flapen.com/research/us/health-household/muscle-builder-for-men"
last_updated: "2026-08-12T11:05:10.037Z"
locale: en
meta:
description: "Amazon product research for muscle builder for men: $30K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:description": "Amazon product research for muscle builder for men: $30K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:title": "Muscle Builder for Men — $30K/mo Amazon US Product Research"
---
# **Muscle Builder for Men**
**Worth a look**
Shows low returns (0.0%), but soft demand (-11.6% this quarter) keeps it on the watch list.
Market size 54Growth 19Conversion 32Competition 55Returns 100Price range 83Avg price 95Brand share 57Review moat 20Quality gap 67
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Avg price**
**Incredible****$31.72**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$3.47–$79.20**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Good****4.3★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Good****71%**
top-5 brand share — brands hold most of the demand
**Competition**
**Good****52%**
top-5 click share — leaders hold, buyers still browse
**Market size**
**Good****$357K**
$357K/yr · 438K searches
**Conversion**
**Okay****2.6%**
search→purchase rate — share of searches ending in a sale
**Review moat**
**Bad****14,107.92**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Bad****-11.6%**
90-day search growth — must beat 0% to launch
## **Is muscle builder for men profitable on Amazon?**
According to Flapen's Amazon United States niche tracking, muscle builder for men is a $357K/yr Amazon United States market (438K searches/yr). The top 5 brands hold 71% of demand. Verdict: Worth a look — 55/100.
Data updated Jul 10, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **muscle builder for men market size & sales**
Units sold, revenue, conversion and listing quality across the tracked shelf.
- **Units sold / yr**
- **13K–15K**
- avg 500–750/product
- **Revenue / yr**
- **$397K–$476K**
- units × avg price
- **Conversion rate**
- **2.6%**
- **Avg BSR**
- **#371**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **81%**
- **Out of stock**
- **1.0%**
- **Avg brand age**
- **63 months**
- **Avg seller age**
- **138 days**
## **Competition: brands, sellers & click share**
The top 5 products take 52% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**19 **▼falling
**Sellers**
**75**
**Top-5 brand share**
**71%**
Top 20: 100%
**Top-5 click share**
**52%**
Top 20: 93%
**Open market**
**23%**
- MuscleTech30% - Jacked Factory14% - Nutrex Research10% - Prime Labs8% - UNALTERED8% - Nutricost6%
## **muscle builder for men demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -11.6% search growth over the last 90 days.
18K13KPrime Day '24Holiday '24Spike '25Prime Day '25 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.6×
[**Open Trend **](https://flapen.com/research/us/health-household/muscle-builder-for-men/trend)
## **Top muscle builder for men search terms shoppers use**
The exact queries shoppers type, with yearly volume, growth and conversion.
- **muscle builder for men**82K/yr-4.0%2.6% conv. - **muscle builder**66K/yr-5.5%2.3% conv. - **muscle growth supplements for men**33K/yr+7.5%1.7% conv. - **muscle building supplements for men**21K/yr+54.0%1.4% conv. - **muscle growth**27K/yr-43.9%1.1% conv. - **muscle gainer for men**22K/yr-5.0%1.5% conv. - **muscles**22K/yr-7.2%1.5% conv. - **bodybuilding supplements**22K/yr-12.4%0.6% conv. - **muscle supplements**17K/yr-7.8%0.9% conv. - **clear muscle**16K/yr-9.1%14.4% conv. [**All search terms **](https://flapen.com/research/us/health-household/muscle-builder-for-men/search-terms)
## **Top muscle builder 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%$18K10%$36K15%$54K20%$71K101001K10K100K1.0M 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**Muscletech HMB Supplements 1000mg Clear Muscle (42 Liquid Softgels) - Highest Grade HMB for Lean Muscle & Recovery-HMB Free Acid Muscle Supplement-Help Decrease Muscle Breakdown - Packaging May Vary**MuscleTech**$19.30**4.4★3,400 rev](https://www.amazon.com/dp/B07YNGFFDT) [2**Nutrex Research Anabol Hardcore Anabolic Activator Muscle Builder and Hardening Agent 60 Pills Fast Acting Liquid Capsules - 1 Month Supply**Nutrex Research**$37.07**4.3★5,308 rev](https://www.amazon.com/dp/B087XBNVG5) [3**Prime Labs - Mens Testosterone Booster - Stamina Endurance & Strength Booster - 60 Caplets**Prime Labs**$21.93**4.1★95,166 rev](https://www.amazon.com/dp/B01MQ1JLWY) [4**UNALTERED Anabolic Muscle Builder for Men - Growth Size Strength - Natural Muscle Building Supplement & Energy Booster - Tribulus Terrestris Ginseng Vitamin D3 Ashwagandha - 150 Capsules**UNALTERED**$46.89**4.4★2,339 rev](https://www.amazon.com/dp/B08YZ8V76M) [5**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**$34.29**4.4★5,716 rev](https://www.amazon.com/dp/B0BDHF2KK4)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**3-AD Black Series - Patented Adrenal Metabolite for Muscle Strength Density & Performance - Hardcore Muscle Support - 60 Capsules**3AD LLC**$75.33**39 rev11mo ago](https://www.amazon.com/dp/B0FK376VNJ) [**STRIVLABS Peak Potential 12-in-1 Testosterone Support for Men Fenugreek Ashwagandha & Tongkat Ali Natural Strength Energy & Muscle Builder 90 Capsules**STRIVLABS**$39.61**623 rev1y ago](https://www.amazon.com/dp/B0DQVRW3T6) [**Testosterone Supplement for Men for Muscle Growth Stamina & Performance | Testosterone Booster Muscle Builder for Men | Test Boost Max with Tongat Ali | Test Booster & Male Enhancement | 60 Gummies**Nobi Nutrition**$12.90**7,627 rev2y ago](https://www.amazon.com/dp/B0CRCJ4H2X) [**Nutrex Research Anabol Ripped Anabolic 2 in 1 Muscle Builder for Men Muscle Growth Supplements Shredding Formula Recovery Thermogenic Support Lean Physique 60 Count**Nutrex Research**$38.70**601 rev2y ago](https://www.amazon.com/dp/B0CT66FPRP) [**Jacked Factory Essentials Muscle Builder - ATP Muscle Builder for Men with Peak ATP to Support Muscle Gain Enhance Athletic Performance & Increase Strength - 30 Capsules**Jacked Factory**$17.96**389 rev2y ago](https://www.amazon.com/dp/B0CKZL1FG7)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Testosterone Supplement for Men for Muscle Growth Stamina & Performance | Testosterone Booster Muscle Builder for Men | Test Boost Max with Tongat Ali | Test Booster & Male Enhancement | 60 Gummies**Nobi Nutrition**$12.90**4.1★**▲ 174%**](https://www.amazon.com/dp/B0CRCJ4H2X) [**3-AD Black Series - Patented Adrenal Metabolite for Muscle Strength Density & Performance - Hardcore Muscle Support - 60 Capsules**3AD LLC**$75.33**3.9★**▲ 162%**](https://www.amazon.com/dp/B0FK376VNJ) [**MuscleTech Creatine Monohydrate Powder Platinum Pure - Unflavored Micronized Creatine for Men & Women - Workout Supplements for Performance Muscle Recovery & Builder-(80 Servings) Packaging May Vary**MuscleTech**$21.22**4.6★**▲ 94%**](https://www.amazon.com/dp/B00IUHNCIW) [**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**$49.76**4.5★**▲ 85%**](https://www.amazon.com/dp/B0015R36SK) [**Optimum Nutrition Creatine Micronized Creatine Monohydrate Powder Supports Strength & Recovery Banned Substance Tested Unflavored 5g per Serving 60 Servings**Optimum Nutrition**$15.15**4.6★**▲ 58%**](https://www.amazon.com/dp/B002DYIZEE)
**~~View all trending →~~**
## **What reviews say buyers love and hate about muscle builder for men**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**19%
*“Excellent product”*
**Energy Level**12%
*“helps with energy”*
**Value For Money**7%
*“Great deal”*
**Advertised Vs Actual Product**5%
*“As advertised”*
**Efficiency**5%
*“Works ok”*
**Taste-Overall**4%
*“Good taste”*
**Vitamin**3%
*“Love this vitamin”*
**Ingredients-Overall**3%
*“Love the ingredients”*
**Muscle Pain Relief**3%
*“Muscle recovery”*
**Nutritional Content**3%
*“Good supplement”*
### **What buyers complain about **
**Solubility**10%
*“Didn't dissolve well”*
**Functionality-Overall**8%
*“Didn't work for me”*
**Taste-Overall**6%
*“They had a weird taste”*
**Dosage**5%
*“the dose is low. 750 mg total”*
**Side Effects**5%
*“Dangerous Side Effects”*
**Quality-Overall**4%
*“Horrible quality”*
**Value For Money**4%
*“expensive”*
**Energy Level**3%
*“No energy”*
**Acid Regulator/Stomach Ache Relief**3%
*“yikes belly bloat”*
**Ingredients-Overall**2%
*“Bad ingredients bad mood swings, just bad”*
### **Top return reasons **
**Value For Money**17%
**Quality-Overall**10%
**Functionality-Overall**10%
**Side Effects**9%
**Joint Pain**7%
**Acid Regulator/Stomach Ache Relief**7%
**Ingredients-Overall**5%
**Certifications**3%
**Solubility**3%
**Product Condition**3%
## **Common muscle builder for men questions**
- **Is muscle builder for men profitable to sell on Amazon United States?**
- The niche generates $357K/yr across 26 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is -11.6%. Flapen's verdict: Worth a look (55/100).
- **How competitive is the muscle builder for men niche?**
- 19 brands and 75 sellers compete. The top 5 products take 52% of clicks and top 5 brands hold 71% of demand.
- **What do buyers complain about in muscle builder for men?**
- Top complaints mined from reviews: Solubility, Functionality-Overall, Taste-Overall. The return rate is 0.0%.
- **When does demand for muscle builder for men peak?**
- Demand is steady year-round — the busiest month runs 1.6× the quietest.
- **What does it cost to enter the muscle builder for men niche?**
- Listings span $3.47–$79.20; the average listing price is $31.72 (sweet spot $15–$100). The average incumbent carries 14,108 reviews — the moat a new listing must climb.
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