---
title: "Amino Acids Supplement — $110K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/amino-acids-supplement"
last_updated: "2026-08-06T18:34:51.166Z"
locale: en
meta:
description: "Niche score 48/100 · $110K/yr market · 41K searches/yr · $50.00 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 48/100 · $110K/yr market · 41K searches/yr · $50.00 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Amino Acids Supplement — $110K/yr Amazon US Niche (2026) - Flapen"
---
# **amino acids supplement**
**Skip it**
Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Market size 26Growth 52Conversion 61Competition 7Returns 100Price range 95Avg price 93Brand share 0Review moat 51Quality gap 73
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Price range**
**Incredible****$18.76–$94.21**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Avg price**
**Great****$50.00**
avg listing price — sweet spot $15–$100
**Quality gap**
**Good****4.3★**
avg incumbent rating — lower means beatable quality
**Conversion**
**Good****5.3%**
search→purchase rate — share of searches ending in a sale
**Growth**
**Good****+23.9%**
90-day search growth — must beat 0% to launch
**Review moat**
**Good****1,463**
avg incumbent reviews — the moat a new listing must climb
**Market size**
**Okay****$110K**
$110K/yr · 41K searches
**Competition**
**Bad****92%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, amino acids supplement is a $110K/yr Amazon United States market (41K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Jan–Feb–Oct–Dec. Verdict: Skip it — 48/100.
Data updated Jul 25, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **amino acids supplement market data**
- **Units sold / yr**
- **2K–3K**
- avg 100–250/product
- **Revenue / yr**
- **$100K–$125K**
- units × avg price
- **Conversion rate**
- **5.3%**
- **Avg BSR**
- **#91**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **100%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **86 months**
- **Avg seller age**
- **156 days**
## **Competition & brand share**
The top 5 products capture 92% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**3 **—flat
**Sellers**
**14**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**92%**
Top 20: 100%
**Open market**
**0%**
- OptimalAmino94% - BodyHealth3% - Double Wood Supplements2%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +23.9% search growth over the last 90 days.
90K70KSpike '24Spike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jan, Feb, Oct, Dec · busiest ÷ quietest = 15.8×
[**Open Trend **](https://flapen.com/research/us/health-household/amino-acids-supplement/trend)
## **Top amino acids supplement search terms**
- **optimal amino**33K/yr+14.0%4.7% conv. - **optimal amino tablets**3K/yr+91.6%8.8% conv. - **optimal aminos**3K/yr+77.4%4.1% conv. - **optimal amino powder**3K/yr+19.9%1.6% conv. [**All search terms **](https://flapen.com/research/us/health-household/amino-acids-supplement/search-terms)
## **Top amino acids supplement 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%15%$17K30%$33K45%$50K60%$66K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 8 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**OptimalAmino Tablets (300 Count) | 99% Utilized Essential Amino Acids (EAA) Supplement Increase Muscle Recovery BCAA Protein Pre/Post Workout | NSF Certified for Sport Certified**OptimalAmino**$51.63**4.5★147 rev](https://www.amazon.com/dp/B0CBNLNKHZ) [2**OptimalAmino Tablets (150 Count) | 99% Utilized Essential Amino Acids (EAA) Supplement Increase Muscle Recovery BCAA Protein Pre/Post Workout | NSF Certified for Sport Certified**OptimalAmino**$29.44**4.5★147 rev](https://www.amazon.com/dp/B0FT44DSLY) [3**OptimalAmino Best Pre/Post Workout Recovery Drink 99% Utilization Essential Amino Acid Supplement NSF Certified for Sport Certified**OptimalAmino**$52.55**4.0★59 rev](https://www.amazon.com/dp/B0C6H68X4Y) [4**OptimalAmino Tablets Fitness Bundle (600 Count) | 99% Utilized Essential Amino Acids (EAA) Supplement | Increase Muscle Recovery BCAA Protein Pre/Post Workout NSF Certified for Sport Certified**OptimalAmino**$94.21**4.5★147 rev](https://www.amazon.com/dp/B0DPJKM9TR) [5**OptimalAmino Amino Acid Powder | 99% Utilized Essential Amino Acid (EAA) Supplement | Pre/Post Workout & Muscle Recovery | NSF for Sport Certified | Sour Green Apple Flavor**OptimalAmino**$51.95**4.7★4 rev](https://www.amazon.com/dp/B0DPNM4WWL)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**OptimalAmino Tablets (150 Count) | 99% Utilized Essential Amino Acids (EAA) Supplement Increase Muscle Recovery BCAA Protein Pre/Post Workout | NSF Certified for Sport Certified**OptimalAmino**$29.44**147 rev9mo ago](https://www.amazon.com/dp/B0FT44DSLY) [**OptimalAmino Amino Acid Powder | 99% Utilized Essential Amino Acid (EAA) Supplement | Pre/Post Workout & Muscle Recovery | NSF for Sport Certified | Sour Green Apple Flavor**OptimalAmino**$51.95**4 rev1y ago](https://www.amazon.com/dp/B0DPNM4WWL) [**OptimalAmino OTG Stick Packs 5 Flavor Variety Box (30 Count) 99% Utilized Essential Amino Acid (EAA) Supplement Increase Muscle Recovery Vegan/Keto Pre/Post Workout NSF Certified for Sport**OptimalAmino**$56.79**48 rev2y ago](https://www.amazon.com/dp/B0CZ1MTR9T) [**OptimalAmino Tablets (300 Count) | 99% Utilized Essential Amino Acids (EAA) Supplement Increase Muscle Recovery BCAA Protein Pre/Post Workout | NSF Certified for Sport Certified**OptimalAmino**$51.63**147 rev2y ago](https://www.amazon.com/dp/B0CBNLNKHZ) [**OptimalAmino Tablets Fitness Bundle (600 Count) | 99% Utilized Essential Amino Acids (EAA) Supplement | Increase Muscle Recovery BCAA Protein Pre/Post Workout NSF Certified for Sport Certified**OptimalAmino**$94.21**147 rev2y ago](https://www.amazon.com/dp/B0DPJKM9TR)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**OptimalAmino Tablets (150 Count) | 99% Utilized Essential Amino Acids (EAA) Supplement Increase Muscle Recovery BCAA Protein Pre/Post Workout | NSF Certified for Sport Certified**OptimalAmino**$29.44**4.5★**▲ 66%**](https://www.amazon.com/dp/B0FT44DSLY) [**OptimalAmino Amino Acid Powder | 99% Utilized Essential Amino Acid (EAA) Supplement | Pre/Post Workout & Muscle Recovery | NSF for Sport Certified | Sour Green Apple Flavor**OptimalAmino**$51.95**4.7★**▲ 46%**](https://www.amazon.com/dp/B0DPNM4WWL) [**OptimalAmino Best Pre/Post Workout Recovery Drink 99% Utilization Essential Amino Acid Supplement NSF Certified for Sport Certified**OptimalAmino**$52.55**4.0★**— 4%**](https://www.amazon.com/dp/B0C6H68X4Y) [**OptimalAmino Tablets (300 Count) | 99% Utilized Essential Amino Acids (EAA) Supplement Increase Muscle Recovery BCAA Protein Pre/Post Workout | NSF Certified for Sport Certified**OptimalAmino**$51.63**4.5★**— 8%**](https://www.amazon.com/dp/B0CBNLNKHZ) [**OptimalAmino Tablets Fitness Bundle (600 Count) | 99% Utilized Essential Amino Acids (EAA) Supplement | Increase Muscle Recovery BCAA Protein Pre/Post Workout NSF Certified for Sport Certified**OptimalAmino**$94.21**4.5★**▼ 19%**](https://www.amazon.com/dp/B0DPJKM9TR)
**~~View all trending →~~**
## **What buyers say about amino acids supplement**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**24%
*“No complaints”*
**Muscle Pain Relief**12%
*“These essential amino acid capsules are perfect for aiding muscle recovery”*
**Advertised Vs Actual Product**9%
*“As advertised”*
**Nutritional Content**7%
*“Best Way to Get Your Protein”*
**Vitamin**7%
*“Just easy bioavailable aminos”*
**Value For Money**6%
*“Great Value”*
**Energy Level**5%
*“Amino acids give me good energy and recovery”*
**Ingredients-Overall**4%
*“I bought these because of the high-quality ingredients”*
**Ease Of Use**3%
*“Ease of use”*
**Weight Loss**2%
*“In a little over a week I dropped 5 pounds”*
### **What buyers complain about **
**Taste-Overall**18%
*“Taste bad”*
**Nutritional Content**6%
*“Not telling the truth about protein. amino acids”*
**Acid Regulator/Stomach Ache Relief**6%
*“It made me sick with stomach cramps, and diarrhea, and there is no refund”*
**Ease Of Chewing/Swallowing**6%
*“gagging trying to swallow”*
**Side Effects**6%
*“This product made me extremely sick- twice”*
**Value For Money**6%
*“it's a lot of money to lose”*
**Smell**5%
*“The smell is bad”*
**Size-Overall**5%
*“Huge pills”*
**Dosage**4%
*“I just couldnt keep taking them as much as I tried”*
**Functionality-Overall**3%
*“Didnt work for me”*
### **Top return reasons **
**Taste-Overall**29%
**Ease Of Chewing/Swallowing**29%
**Functionality-Overall**14%
**Ingredients-Overall**14%
**Side Effects**7%
**Acid Regulator/Stomach Ache Relief**7%
## **Common questions**
- **Is amino acids supplement profitable to sell on Amazon United States?**
- The niche generates $110K/yr across 8 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +23.9%. Flapen's verdict: Skip it (48/100).
- **How competitive is the amino acids supplement niche?**
- 3 brands and 14 sellers compete. The top 5 products take 92% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in amino acids supplement?**
- Top complaints mined from reviews: Taste-Overall, Nutritional Content, Acid Regulator/Stomach Ache Relief. The return rate is 0.0%.
- **When does demand for amino acids supplement peak?**
- Demand peaks in Jan–Feb–Oct–Dec; the busiest month runs 15.8× the quietest.
- **What does it cost to enter the amino acids supplement niche?**
- Listings span $18.76–$94.21; the average listing price is $50.00 (sweet spot $15–$100). The average incumbent carries 1,463 reviews — the moat a new listing must climb.
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