Muscle Builder for Men
Worth a lookShows low returns (0.0%), but soft demand (-11.6% this quarter) keeps it on the watch list.
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Avg price
Incredible$31.72avg listing price — sweet spot $15–$100
Price range
Great$3.47–$79.20cheapest to priciest tracked listing — scored on the share inside $15–$100
Quality gap
Good4.3★avg incumbent rating — lower means beatable quality
Brand share
Good71%top-5 brand share — brands hold most of the demand
Competition
Good52%top-5 click share — leaders hold, buyers still browse
Market size
Good$357K$357K/yr · 438K searches
Conversion
Okay2.6%search→purchase rate — share of searches ending in a sale
Review moat
Bad14,107.92avg 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
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.No pronounced peak months · busiest ÷ quietest = 1.6×
Top muscle builder for men search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.- muscle builder for men82K/yr
- muscle builder66K/yr
- muscle growth supplements for men33K/yr
- muscle building supplements for men21K/yr
- muscle growth27K/yr
- muscle gainer for men22K/yr
- muscles22K/yr
- bodybuilding supplements22K/yr
- muscle supplements17K/yr
- clear muscle16K/yr
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.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
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$19.304.4★3,400 rev
Nutrex Research Anabol Hardcore Anabolic Activator Muscle Builder and Hardening Agent 60 Pills Fast Acting Liquid Capsules - 1 Month Supply
Nutrex Research$37.074.3★5,308 rev
Prime Labs - Mens Testosterone Booster - Stamina Endurance & Strength Booster - 60 Caplets
Prime Labs$21.934.1★95,166 rev
UNALTERED Anabolic Muscle Builder for Men - Growth Size Strength - Natural Muscle Building Supplement & Energy Booster - Tribulus Terrestris Ginseng Vitamin D3 Ashwagandha - 150 Capsules
UNALTERED$46.894.4★2,339 rev
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$34.294.4★5,716 rev
Newest
by launch date
3-AD Black Series - Patented Adrenal Metabolite for Muscle Strength Density & Performance - Hardcore Muscle Support - 60 Capsules
3AD LLC$75.3339 rev
STRIVLABS Peak Potential 12-in-1 Testosterone Support for Men Fenugreek Ashwagandha & Tongkat Ali Natural Strength Energy & Muscle Builder 90 Capsules
STRIVLABS$39.61623 rev
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$12.907,627 rev
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$38.70601 rev
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$17.96389 rev
Trending
90-day click momentumTestosterone 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$12.904.1★
3-AD Black Series - Patented Adrenal Metabolite for Muscle Strength Density & Performance - Hardcore Muscle Support - 60 Capsules
3AD LLC$75.333.9★
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$21.224.6★
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$49.764.5★
Optimum Nutrition Creatine Micronized Creatine Monohydrate Powder Supports Strength & Recovery Banned Substance Tested Unflavored 5g per Serving 60 Servings
Optimum Nutrition$15.154.6★
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
“Excellent product”
“helps with energy”
“Great deal”
“As advertised”
“Works ok”
“Good taste”
“Love this vitamin”
“Love the ingredients”
“Muscle recovery”
“Good supplement”
What buyers complain about
“Didn't dissolve well”
“Didn't work for me”
“They had a weird taste”
“the dose is low. 750 mg total”
“Dangerous Side Effects”
“Horrible quality”
“expensive”
“No energy”
“yikes belly bloat”
“Bad ingredients bad mood swings, just bad”
Top return reasons
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.