Is muscle protein powder profitable to sell on Amazon United States?

The niche generates $80K/yr across 9 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is +3.6%. Flapen's verdict: Skip it (39/100).

How competitive is the muscle protein powder niche?

5 brands and 29 sellers compete. The top 5 products take 85% of clicks and top 5 brands hold 100% of demand.

What do buyers complain about in muscle protein powder?

Top complaints mined from reviews: Functionality-Overall, Value For Money, Weight Loss. The return rate is 0.0%.

When does demand for muscle protein powder peak?

Demand is steady year-round — the busiest month runs 1.5× the quietest.

What does it cost to enter the muscle protein powder niche?

Listings span $23.24–$81.68; the average listing price is $53.54 (sweet spot $15–$100). The average incumbent carries 7,585 reviews — the moat a new listing must climb.

Muscle Protein Powder

Skip it

Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Price range

Incredible$23.24–$81.68

cheapest to priciest tracked listing — scored on the share inside $15–$100

Avg price

Great$53.54

avg listing price — sweet spot $15–$100

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Conversion

Okay2.4%

search→purchase rate — share of searches ending in a sale

Growth

Okay+3.6%

90-day search growth — must beat 0% to launch

Review moat

Bad7,585.44

avg incumbent reviews — the moat a new listing must climb

Market size

Bad$80K

$80K/yr · 62K searches

Competition

Bad85%

top-5 click share — a locked-up shelf

Brand share

Bad100%

top-5 brand share — brand-locked demand

Signals Low Review Barrier High Price Out of Stock

Is muscle protein powder profitable on Amazon?

According to Flapen's Amazon United States niche tracking, muscle protein powder is a $80K/yr Amazon United States market (62K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 39/100.

Data updated Jul 8, 2026 · scored weekly · How we score niches

muscle protein powder market size & sales

Units sold, revenue, conversion and listing quality across the tracked shelf.

Units sold / yr: 2K–3K; avg 0–100/product
Revenue / yr: $107K–$134K; units × avg price
Conversion rate: 2.4%
Avg BSR: #222
Page quality: 0%
Prime: 67%
Sponsored: 67%
Out of stock: 43.7%
Avg brand age: 78 months
Avg seller age: 143 days

Competition: brands, sellers & click share

The top 5 products capture 85% of clicks — a locked-up shelf that new listings rarely crack.

Brands

5 falling

Sellers

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

85%

Top 20: 100%

Open market

GNC58%
Dymatize21%
Optimum Nutrition11%
Naturade7%
Supragenix3%

muscle protein powder demand & seasonality

Weekly Amazon search volume, last 104 weeks — +3.6% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.5×

Open Trend

Top muscle protein powder search terms shoppers use

The exact queries shoppers type, with yearly volume, growth and conversion.

gnc bulk 13409K/yr +42.3%2.3% conv.
gnc mass gainer10K/yr +5.7%1.9% conv.
gnc weight gainer10K/yr -1.3%0.9% conv.
weight gain supplements for men6K/yr +2.0%0.9% conv.
gnc weight gainer protein powder5K/yr -9.7%1.0% conv.
gnc pro performance bulk 13405K/yr +4.0%1.3% conv.
weight gain protein powder for women5K/yr -4.1%1.4% conv.
1340 bulk protein3K/yr +61.6%2.7% conv.
protein powder to gain weight5K/yr -28.7%1.8% conv.
gnc pro performance weight gainer3K/yr -19.5%0.7% conv.

All search terms

Top muscle protein powder 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)1 product missing review or click data not plotted

All 9 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

GNC Pro Performance Bulk 1340 - Protein Powder for Active Lifestyles - Sports Nutrition for Muscle Fuel - Nutrient-Dense Blend with Creatine & Glutamine - Cookies & Cream - 114.24 Oz (9 Servings)

GNC$53.724.0★5 rev

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$41.074.5★9,308 rev

Naturade Weight Gain Nutrition Drink Mix for Healthy Weight Support Balanced Calories with Protein Vitamins & Minerals Vanilla - 20.3 oz

Naturade$23.244.2★3,472 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$49.764.5★34,752 rev

GNC AMP Mass XXX Clinically Proven Weight Gainer Protein Powder Improves Strength and Size 780 Calories 50g Protein Micronized Amino Acids Creatine Betaine Vanilla 13 Servings 6 Pounds

GNC$81.684.8★166 rev

Newest

by launch date

GNC Pro Bulk 1340 2.0 Double Chocolate 15 Servings

GNC$81.660 rev

3mo ago

GNC Pro Performance Bulk 1340 - Protein Powder for Active Lifestyles - Sports Nutrition for Muscle Fuel - Nutrient-Dense Blend with Creatine & Glutamine - Cookies & Cream - 114.24 Oz (9 Servings)

GNC$53.725 rev

4mo ago

Supragenix CB-1 Weight Gainer Pills (90 Count) | Weight Gain Support for Women & Men | Clinically Tested Appetite Booster | Powerful Mass Gainer

Supragenix$65.11562 rev

2y ago

GNC AMP Mass XXX Clinically Proven Weight Gainer Protein Powder Improves Strength and Size 780 Calories 50g Protein Micronized Amino Acids Creatine Betaine Vanilla 13 Servings 6 Pounds

GNC$81.68166 rev

5y ago

GNC Pro Performance Weight Gainer - Double Chocolate - 2.5 lb

GNC$33.20111 rev

8y ago

What reviews say buyers love and hate about muscle protein powder

What buyers praise and complain about, mined from review topics.

What buyers love

Taste-Overall23%

“Good taste”

Weight Loss16%

“this really help me maintain the weight”

Weight Gain9%

“Helps you gain weight”

Quality-Overall7%

“Good quality”

Nutritional Content6%

“This protein powder is excellent”

Flavor5%

“Flavor is good”

Ease Of Use4%

“Easy to mix”

Value For Money4%

“Definitely worth the money”

Efficiency3%

“It really does work”

Side Effects2%

“I didnt experience any side effects”

What buyers complain about

Functionality-Overall13%

“Mildly effective. Didn't get great results”

Value For Money10%

“Waste of money”

Weight Loss10%

“I saw absolutely no increase in appetite”

Taste-Overall9%

“it doesn't taste much like vanilla”

Quality-Overall6%

“Full of garbage”

Nutritional Content5%

“its no good, plus half a cup supplies only 10 grams of protein, scarcely more than 2 tablespoons of peanut butter”

Dosage3%

“Using scoops and grams isnt helpful — every scoop is different, and how many people weigh a powder”

Advertised Vs Actual Product3%

“Seems discriminatory”

Flavor2%

“Not a fan of the flavor”

Size-Overall2%

“serving size is HUGE”

Common muscle protein powder questions

Is muscle protein powder profitable to sell on Amazon United States?: The niche generates $80K/yr across 9 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is +3.6%. Flapen's verdict: Skip it (39/100).
How competitive is the muscle protein powder niche?: 5 brands and 29 sellers compete. The top 5 products take 85% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in muscle protein powder?: Top complaints mined from reviews: Functionality-Overall, Value For Money, Weight Loss. The return rate is 0.0%.
When does demand for muscle protein powder peak?: Demand is steady year-round — the busiest month runs 1.5× the quietest.
What does it cost to enter the muscle protein powder niche?: Listings span $23.24–$81.68; the average listing price is $53.54 (sweet spot $15–$100). The average incumbent carries 7,585 reviews — the moat a new listing must climb.