Casein Protein Powder
MaybeAn estimated 0.0% of orders come back. But demand is soft, at -1.6% this quarter, so Casein Protein Powder is a Maybe.
- Flapen Score
- 63 / 100Top 6% of 14,768 Health & Household niches · +14 vs the category median of 4963
- Market size
- $2.8M/yr979K searches / yr
- 90-day growth
- -1.6%search demand this quarter
- Competition
- 49%top-5 click share · 15 brands · 39 sellers
Flapen Score
Casein Protein Powder against its category
The dotted line is the Health & Household average. Past it, Casein Protein Powder is stronger. Inside it, weaker.
Market
The Casein Protein Powder market on Amazon at a glance
Shoppers on Amazon United States searched for Casein Protein Powder 979K times last year and spent an estimated $2.8M. The top 5 brands take 87% of clicks. Flapen scores it 63 out of 100, a Maybe.
01 · Demand
An estimated 5.1% of those searches ended in a purchase.
Shoppers searched for this 979K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 5.1% of those searches ended in a purchase. Searches in the last 90 days moved -1.6% against the 90 days before. Searches, conversion and average price together put the market at an estimated $2.8M a year.
- Searches, last 12 months
- 979K
- Growth, 90 days vs prior 90
- -1.6%
- Conversion, latest week
- 5.1%
- Market size, estimated
- $2.8Ma year
- Peak month
- June1.5× the quietest month
- Top search term
- casein protein powder495K searches a year
02 · Price
A sale here is worth $54.59.
Listings sell for $54.59 on average, from $22.36 to $99.33. Amazon reports units sold in ranges. This niche sold 50K to 60K a year. The average listing sells 1,500 to 2,000 of them. At $54.59 that is $82K to $109K a year per listing.
- Average price
- $54.59inside the $15 to $100 sweet spot
- Price range
- $22.36–$99.33
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 50K–60K
- Units per listing a year
- 1,500–2,000
- Revenue per listing a year
- $82K–$109K
- Returns
- 0.0%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is reviews.
77% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 2.8% of listings are out of stock. The average listing ranks #185 within Protein. It carries 2,155 reviews at 4.39 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 77%
- Prime listings
- 100%
- Out of stock, average day
- 2.8%
- Average rank
- #185in Protein
- Average rating
- 4.39 starsAmazon United States average 4.42 stars
- Average reviews
- 2,155per listing
- Listings tracked
- 30
04 · Newcomers
Brands here are established.
The brands on the shelf have sold for 83 months on average, so the names here are established.
- Launched, last 12 months
- 0
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 83 months
Products
Top Casein Protein Powder products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 10, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Optimum Nutrition Gold Standard 100% Micellar Casein Protein Powder Slow Digesting Helps Keep You Full Overnight Muscle Recovery Chocolate Supreme 2 Pound (Packaging May Vary)
- Price
- $46.53
- Rating
- 4.6/5
- Reviews
- 9,135
- Age
- 22y ago

NAKED Casein - 1Lb Micellar Casein Protein - Bulk Zero Carb NSF Certified GMO-Free Gluten Free Soy Free Preservative Free - Stimulate Muscle Growth - Enhance Recovery - 15 Servings
- Price
- $24.96
- Rating
- 4.4/5
- Reviews
- 2,077
- Age
- 8y ago

Nutricost Casein Protein Powder 2lb Vanilla - Micellar Casein Gluten Free Non-GMO
- Price
- $34.39
- Rating
- 4.5/5
- Reviews
- 1,430
- Age
- 7y ago

Optimum Nutrition Gold Standard 100% Micellar Casein Protein Powder Slow Digesting Helps Keep You Full Overnight Muscle Recovery Creamy Vanilla 1.81 Pound (Packaging May Vary)
- Price
- $46.08
- Rating
- 4.6/5
- Reviews
- 5,747
- Age
- 22y ago

Optimum Nutrition Gold Standard 100% Micellar Casein Protein Powder Slow Digesting Helps Keep You Full Overnight Muscle Recovery Chocolate Supreme 4 Pound (Packaging May Vary)
- Price
- $78.49
- Rating
- 4.6/5
- Reviews
- 9,135
- Age
- 17y ago
Trending
estimated 90-day click momentum
Nutricost Casein Protein Powder 5lb - Micellar Casein Non-GMO Gluten Free (Unflavored)
- Price
- $65.16
- Rating
- 4.5/5
- Reviews
- 708
- Age
- 7y ago

NAKED Casein - 5Lb Micellar Casein Protein Powder - Bulk Zero Carb NSF Certified GMO-Free Gluten Free Soy Free Preservative Free - Stimulate Muscle Growth - Enhance Recovery - 76 Servings
- Price
- $99.18
- Rating
- 4.4/5
- Reviews
- 2,077
- Age
- 11y ago

BSN SYNTHA-6 Whey Protein Powder Micellar Casein Milk Protein Isolate Powder Vanilla Ice Cream 5 Pounds 48 Servings (Pack of 1) - Package May Vary
- Price
- $60.37
- Rating
- 4.7/5
- Reviews
- 9,624
- Age
- 17y ago

Ascent Casein Protein Powder - 25g Micellar Casein Powder with Zero Artificial Flavors & Sweeteners Gluten-Free No Added Sugar 4.9g BCAA 2.2g Leucine - Chocolate 2 Pounds
- Price
- $43.94
- Rating
- 4.3/5
- Reviews
- 1,099
- Age
- 9y ago

NAKED Casein - 1Lb Micellar Casein Protein - Bulk Zero Carb NSF Certified GMO-Free Gluten Free Soy Free Preservative Free - Stimulate Muscle Growth - Enhance Recovery - 15 Servings
- Price
- $24.96
- Rating
- 4.4/5
- Reviews
- 2,077
- Age
- 8y ago
Newest
by launch date
Its Just! - 100% Casein Protein Powder Made in USA One Ingredient Slow Burning Time Release (1 Pound (Pack of 1) Unflavored)
- Price
- $22.36
- Rating
- 4.3/5
- Reviews
- 326
- Age
- 1y ago

Levels 100% Micellar Casein Protein Hormone Free Chocolate 2LB
- Price
- $43.24
- Rating
- 4.4/5
- Reviews
- 458
- Age
- 5y ago

Levels 100% Micellar Casein Protein Hormone Free Chocolate 4LB
- Price
- $74.65
- Rating
- 4.4/5
- Reviews
- 458
- Age
- 5y ago

Nutricost Casein Protein Powder 2lb Vanilla - Micellar Casein Gluten Free Non-GMO
- Price
- $34.39
- Rating
- 4.5/5
- Reviews
- 1,430
- Age
- 7y ago

Nutricost Casein Protein Powder 5lb Vanilla - Micellar Casein Gluten Free Non-GMO
- Price
- $65.13
- Rating
- 4.5/5
- Reviews
- 1,430
- Age
- 7y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 49% of clicks. Leaders hold, but buyers still shop past them.
Brands
15 falling
Sellers
39
Est. top-5 brand share
87%
Top 20: 100%
Est. top-5 click share
49%
Top 20: 93%
Open market
10%
- Optimum Nutrition33%
- Nutricost28%
- NAKED16%
- Levels Nutrition7%
- BulkSupplements4%
- It's Just!3%
- Open — no brand owns it (9 brands, 10%)
Demand
Casein Protein Powder search demand
Weekly searches over the year, seasonality beneath. Pick a range.
No pronounced peak months · busiest ÷ quietest = 1.5×
Search terms
Top Casein Protein Powder search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- casein protein powder495K/yr
- casein protein156K/yr
- casein112K/yr
- casein protein powder vanilla18K/yr
- naked casein20K/yr
- casein powder20K/yr
- micellar casein protein powder21K/yr
- casine protein powder17K/yr
- protein powder casein15K/yr
- micellar casein11K/yr
Reviews and returns
What reviews say buyers love and hate about Casein Protein Powder
We read the reviews and the return reasons for every product selling here.
“Didnt taste good”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
15 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Casein Protein Powder questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data









