Muscle Gainer for Men
Skip itWeak search conversion (1.0%) — this niche doesn't clear our bar today.
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Price range
Incredible$19.48–$89.70cheapest to priciest tracked listing — scored on the share inside $15–$100
Avg price
Great$46.57avg listing price — sweet spot $15–$100
Competition
Good48%top-5 click share — leaders hold, buyers still browse
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Market size
Okay$104K$104K/yr · 225K searches
Review moat
Bad7,070.81avg incumbent reviews — the moat a new listing must climb
Brand share
Bad94%top-5 brand share — brand-locked demand
Growth
Bad-19.6%90-day search growth — must beat 0% to launch
Conversion
Bad1.0%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
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.Peak months: Oct · busiest ÷ quietest = 1.7×
Top muscle gainer for men search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.- muscletech mass gainer37K/yr
- mass tech38K/yr
- mass tech extreme 200033K/yr
- muscle tech mass gainers34K/yr
- muscle mass gainer12K/yr
- muscle tech mass gainer15K/yr
- mass gainer muscletech7K/yr
- masstech extreme 20009K/yr
- ganador de masa muscular9K/yr
- mass tech protein powder9K/yr
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.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
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$40.994.5★9,328 rev
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$46.104.4★1,378 rev
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$49.754.5★34,785 rev
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$48.394.4★2,766 rev
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$25.984.5★2,672 rev
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$23.342,766 rev
Rule 1 Proteins Mass Gainer Chocolate Fudge 8 Servings
Rule 1 Proteins$32.14144 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$34.245,719 rev
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$46.101,378 rev
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$45.24811 rev
Trending
90-day click momentumMutant 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$48.394.4★
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$22.884.3★
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$23.344.4★
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$62.334.6★
Rule 1 Proteins Mass Gainer Chocolate Fudge 8 Servings
Rule 1 Proteins$32.144.4★
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
“It actually tastes amazing”
“Excellent Quality and Amazing Results🌟 Ive been using this creatine for over a year”
“Great protein powder”
“Helps me put weight back on”
“Nice vanilla flavor”
“Does help you gain weight”
“Worth it”
“enhance muscle recovery”
“effective”
“Mixes easily”
What buyers complain about
“Taste is atrocious”
“Not worth the price”
“less protein that way of course”
“which is also too short”
“Not a fan of the flavor”
“Smells awful”
“Bad quality not good tast and very healthy”
“I struggle a lot to gain weight”
“chocolate is terrible”
“Using scoops and grams isnt helpful — every scoop is different, and how many people weigh a powder”
Top return reasons
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.