---
title: "Casein Protein Powder Vanilla — $86K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/casein-protein-powder-vanilla"
last_updated: "2026-08-10T21:29:47.956Z"
locale: en
meta:
description: "Niche score 47/100 · $86K/yr market · 25K searches/yr · $48.54 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 47/100 · $86K/yr market · 25K searches/yr · $48.54 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Casein Protein Powder Vanilla — $86K/yr Amazon US Niche (2026) - Flapen"
---
# **casein protein powder vanilla**
**Skip it**
Brand-locked demand (top 5 brands take 94% of clicks) — this niche doesn't clear our bar today.
Market size 21Growth 33Conversion 75Competition 20Returns 100Price range 95Avg price 94Brand share 16Review moat 42Quality gap 55
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Price range**
**Incredible****$14.76–$98.21**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Avg price**
**Great****$48.54**
avg listing price — sweet spot $15–$100
**Conversion**
**Good****6.9%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Okay****2,345.53**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Okay****+6.0%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****$86K**
$86K/yr · 25K searches
**Competition**
**Bad****76%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****94%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, casein protein powder vanilla is a $86K/yr Amazon United States market (25K searches/yr). The top 5 brands hold 94% of demand. Demand peaks in Sep. Verdict: Skip it — 47/100.
Data updated Jul 10, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **casein protein powder vanilla market data**
- **Units sold / yr**
- **2K–2K**
- avg 100–250/product
- **Revenue / yr**
- **$73K–$97K**
- units × avg price
- **Conversion rate**
- **6.9%**
- **Avg BSR**
- **#129**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **87%**
- **Out of stock**
- **1.0%**
- **Avg brand age**
- **99 months**
- **Avg seller age**
- **148 days**
## **Competition & brand share**
The top 5 products capture 76% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**9 **▼falling
**Sellers**
**28**
**Top-5 brand share**
**94%**
Top 20: 100%
**Top-5 click share**
**76%**
Top 20: 100%
**Open market**
**6%**
- Nutricost38% - Optimum Nutrition33% - NAKED9% - PEScience8% - Ascent3% - It's Just!3% - Open — no brand owns it (3 brands, 6%)
## **Demand & seasonality**
Weekly Amazon search volume, last 102 weeks — +6.0% search growth over the last 90 days.
1K750Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Sep · busiest ÷ quietest = 2.2×
[**Open Trend **](https://flapen.com/research/us/health-household/casein-protein-powder-vanilla/trend)
## **Top casein protein powder vanilla products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%10%$9K20%$17K30%$26K40%$34K1001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 15 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Nutricost Casein Protein Powder 2lb Vanilla - Micellar Casein Gluten Free Non-GMO**Nutricost**$34.39**4.5★1,430 rev](https://www.amazon.com/dp/B07SH22XS3) [2**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)**Optimum Nutrition**$46.08**4.6★5,747 rev](https://www.amazon.com/dp/B002DYJ0PW) [3**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**NAKED**$24.96**4.4★2,077 rev](https://www.amazon.com/dp/B0787TJJNQ) [4**PEScience Select Protein Powder Whey and Casein Blend Lean Protein Powder for Women and Men Low Calorie Low Carb Keto Friendly Gluten Free Gourmet Vanilla - 5 Servings**PEScience**$14.76**4.6★2,370 rev](https://www.amazon.com/dp/B07DVRSXW7) [5**Nutricost Casein Protein Powder 5lb Vanilla - Micellar Casein Gluten Free Non-GMO**Nutricost**$65.13**4.5★1,430 rev](https://www.amazon.com/dp/B07SH19M1S)
**~~View all top sellers →~~**
### **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)**It's Just!**$22.36**326 rev1y ago](https://www.amazon.com/dp/B0F1BXGMSG) [**Rule 1 Proteins Casein Protein Vanilla Crme 29 Servings**Rule 1 Proteins**$34.99**138 rev2y ago](https://www.amazon.com/dp/B0CJ59BFRK) [**Levels 100% Micellar Casein Protein Hormone Free Vanilla Bean 4LB**Levels Nutrition**$75.02**520 rev5y ago](https://www.amazon.com/dp/B08Q6D24F7) [**Nutricost Casein Protein Powder 2lb Vanilla - Micellar Casein Gluten Free Non-GMO**Nutricost**$34.39**1,430 rev7y ago](https://www.amazon.com/dp/B07SH22XS3) [**Nutricost Casein Protein Powder 5lb Vanilla - Micellar Casein Gluten Free Non-GMO**Nutricost**$65.13**1,430 rev7y ago](https://www.amazon.com/dp/B07SH19M1S)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**PEScience Select Protein Powder Whey and Casein Blend Lean Protein Powder for Women and Men Low Calorie Low Carb Keto Friendly Gluten Free Gourmet Vanilla - 5 Servings**PEScience**$14.76**4.6★**▲ 156%**](https://www.amazon.com/dp/B07DVRSXW7) [**Nutricost Casein Protein Powder 5lb - Micellar Casein Non-GMO Gluten Free (Unflavored)**Nutricost**$65.16**4.5★**▲ 137%**](https://www.amazon.com/dp/B08HSSFB2X) [**Rule 1 Proteins Casein Protein Vanilla Crme 29 Servings**Rule 1 Proteins**$34.99**4.4★**▲ 56%**](https://www.amazon.com/dp/B0CJ59BFRK) [**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**NAKED**$24.96**4.4★**▲ 40%**](https://www.amazon.com/dp/B0787TJJNQ) [**NAKED Casein - Vanilla Micellar Casein Protein - 5 Pound Bulk NSF Certified GMO-Free Gluten-Free Soy-Free Preservative-Free - Stimulate Muscle Growth - Enhance Recovery - 61 Servings**NAKED**$98.21**3.8★**▲ 12%**](https://www.amazon.com/dp/B01DTWXM3C)
**~~View all trending →~~**
## **What buyers say about casein protein powder vanilla**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Taste-Overall**23%
*“Tastes, great and mixes smoothly”*
**Nutritional Content**16%
*“Excellent protein”*
**Quality-Overall**10%
*“Reliable quality and fresh”*
**Flavor**8%
*“it also adds to the flavor”*
**Value For Money**6%
*“Good deal”*
**Blend/Ratio**4%
*“Mixes great”*
**Solubility**3%
*“Mixes really well as well”*
**Sleep Quality**3%
*“Good for bedtime”*
**Baking**2%
*“I love this it is really great in baking”*
**Advertised Vs Actual Product**1%
*“Otherwise, the product appears as described”*
### **What buyers complain about **
**Taste-Overall**16%
*“doesnt taste like it”*
**Texture/Consistency-Overall**14%
*“Weird texture”*
**Flavor**5%
*“Unflavored”*
**Sweetness**5%
*“Not overly sweet”*
**Solubility**5%
*“Doesn't mix or dissolve well”*
**Advertised Vs Actual Product**4%
*“claiming that is not true”*
**Value For Money**4%
*“$$ Pricey”*
**Nutritional Content**3%
*“this protein has been just awful”*
**Ingredients-Overall**2%
*“form potentially harmful compounds”*
**Ease Of Chewing/Swallowing**2%
*“Difficult to scoop”*
### **Top return reasons **
**Ingredients-Overall**100%
## **Common questions**
- **Is casein protein powder vanilla profitable to sell on Amazon United States?**
- The niche generates $86K/yr across 15 tracked products. 90-day search growth is +6.0%. Flapen's verdict: Skip it (47/100).
- **How competitive is the casein protein powder vanilla niche?**
- 9 brands and 28 sellers compete. The top 5 products take 76% of clicks and top 5 brands hold 94% of demand.
- **What do buyers complain about in casein protein powder vanilla?**
- Top complaints mined from reviews: Taste-Overall, Texture/Consistency-Overall, Flavor. The return rate is 0.0%.
- **When does demand for casein protein powder vanilla peak?**
- Demand peaks in Sep; the busiest month runs 2.2× the quietest.
- **What does it cost to enter the casein protein powder vanilla niche?**
- Listings span $14.76–$98.21; the average listing price is $48.54 (sweet spot $15–$100). The average incumbent carries 2,346 reviews — the moat a new listing must climb.
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