---
title: "5htp 400mg Capsules — $49K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/5htp-400mg-capsules"
last_updated: "2026-08-06T15:57:44.975Z"
locale: en
meta:
description: "Niche score 49/100 · $49K/yr market · 15K searches/yr · $22.02 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 49/100 · $49K/yr market · 15K searches/yr · $22.02 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "5htp 400mg Capsules — $49K/yr Amazon US Niche (2026) - Flapen"
---
# **5htp 400mg capsules**
**Skip it**
A small market ($49K/yr) — this niche doesn't clear our bar today.
Market size 12Growth 19Conversion 97Competition 22Returns 100Price range 92Avg price 93Brand share 53Review moat 24Quality gap 52
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Conversion**
**Incredible****15.0%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Great****$22.02**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$14.06–$36.52**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Good****73%**
top-5 brand share — brands hold most of the demand
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Bad****4,932.31**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Bad****73%**
top-5 click share — a locked-up shelf
**Growth**
**Bad****-11.6%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****$49K**
$49K/yr · 15K searches
According to Flapen's Amazon United States niche tracking, 5htp 400mg capsules is a $49K/yr Amazon United States market (15K searches/yr). The top 5 brands hold 73% of demand. Verdict: Skip it — 49/100.
Data updated Jul 25, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **5htp 400mg capsules market data**
- **Units sold / yr**
- **2K–2K**
- avg 100–250/product
- **Revenue / yr**
- **$33K–$44K**
- units × avg price
- **Conversion rate**
- **15.0%**
- **Avg BSR**
- **#78**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **85%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **95 months**
- **Avg seller age**
- **166 days**
## **Competition & brand share**
The top 5 products capture 73% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**11 **▼falling
**Sellers**
**30**
**Top-5 brand share**
**73%**
Top 20: 97%
**Top-5 click share**
**73%**
Top 20: 100%
**Open market**
**20%**
- Horbäach38% - Clean Nutraceuticals12% - BulkSupplements9% - Triquetra Health8% - Nutricost6% - DR. EMIL NUTRITION6%
## **Demand & seasonality**
Weekly Amazon search volume, last 102 weeks — -11.6% search growth over the last 90 days.
1K600Spike '24Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.6×
[**Open Trend **](https://flapen.com/research/us/health-household/5htp-400mg-capsules/trend)
## **Top 5htp 400mg capsules 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%$5K20%$10K30%$15K40%$20K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 13 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Horbach 5HTP 400mg Capsules | 120 Count | Extra Strength Supplement**Horbäach**$18.52**4.4★1,815 rev](https://www.amazon.com/dp/B07N7PMWD5) [2**Clean Nutraceuticals GABA 750mg 5 HTP 200mg L Tryptophan 500mg L Theanine 200mg Ashwagandha SAM-e L-Glycine - Mood Support Vitamins for Women and Men with L-Tyrosine 5-HTP (5-Hydroxytryptophan)**Clean Nutraceuticals**$28.04**4.4★2,665 rev](https://www.amazon.com/dp/B0BVXY3SMH) [3**BulkSupplements.com 5-HTP Capsules - 5-Hydroxytryptophan Mood Support Supplement - Gluten Free 2 Capsules per Serving (400mg) 360 Capsules (Pack of 1)**BulkSupplements**$24.31**4.4★104 rev](https://www.amazon.com/dp/B0CC777T47) [4**Organic 5-HTP - 200 mg | 99% 5HTP Concentration Plus Cofactor Vitamin B6 & Lions Mane | Water Extracted from Organic Griffonia Seeds | Supports Mood Cognition & Sleep (60 Capsules | 30 Servings)**Triquetra Health**$23.74**4.5★1,320 rev](https://www.amazon.com/dp/B0BCMPVJNK) [5**Nutricost 5-HTP 200mg 120 Vegetarian Capsules (5-Hydroxytryptophan)**Nutricost**$16.79**4.5★3,818 rev](https://www.amazon.com/dp/B07737HBN6)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**5htp 400mg Capsules Per Vegetarian Pill Extra-Strength Max Dose 5 htp Supplement. Sleep Positive Outlook Calmness Cognition. 1 Pill is 400mg 5-htp Supplement and 2 Pills is 800mg htp5**BioWisdom Nutraceuticals**$16.76**22 rev6mo ago](https://www.amazon.com/dp/B0GFY6CZDB) [**Micro Ingredients 5-HTP 200mg 240 Softgels | Extra Strength 5-Hydroxytryptophan Complex with GABA L-Theanine Vitamin B6 | Highly Bioavailable with Hemp Seed Oil Carrier | Non-GMO**Micro Ingredients**$21.70**126 rev1y ago](https://www.amazon.com/dp/B0FJ477YCV) [**BulkSupplements.com 5-HTP Capsules - 5-Hydroxytryptophan Mood Support Supplement - Gluten Free 2 Capsules per Serving (400mg) 360 Capsules (Pack of 1)**BulkSupplements**$24.31**104 rev3y ago](https://www.amazon.com/dp/B0CC777T47) [**DR. EMIL NUTRITION 200 MG 5-HTP Plus with SAM-e for Mood Stress and Sleep - 5HTP Supplement with Vitamin B6-120 Vegan Capsules 60 Servings**DR. EMIL NUTRITION**$36.52**24,587 rev3y ago](https://www.amazon.com/dp/B0C2WDPP3B) [**Clean Nutraceuticals GABA 750mg 5 HTP 200mg L Tryptophan 500mg L Theanine 200mg Ashwagandha SAM-e L-Glycine - Mood Support Vitamins for Women and Men with L-Tyrosine 5-HTP (5-Hydroxytryptophan)**Clean Nutraceuticals**$28.04**2,665 rev3y ago](https://www.amazon.com/dp/B0BVXY3SMH)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**5htp 400mg Capsules Per Vegetarian Pill Extra-Strength Max Dose 5 htp Supplement. Sleep Positive Outlook Calmness Cognition. 1 Pill is 400mg 5-htp Supplement and 2 Pills is 800mg htp5**BioWisdom Nutraceuticals**$16.76**4.5★**▲ 303%**](https://www.amazon.com/dp/B0GFY6CZDB) [**Micro Ingredients 5-HTP 200mg 240 Softgels | Extra Strength 5-Hydroxytryptophan Complex with GABA L-Theanine Vitamin B6 | Highly Bioavailable with Hemp Seed Oil Carrier | Non-GMO**Micro Ingredients**$21.70**4.4★**▲ 109%**](https://www.amazon.com/dp/B0FJ477YCV) [**DR. EMIL NUTRITION 200 MG 5-HTP Plus with SAM-e for Mood Stress and Sleep - 5HTP Supplement with Vitamin B6-120 Vegan Capsules 60 Servings**DR. EMIL NUTRITION**$36.52**4.3★**▲ 41%**](https://www.amazon.com/dp/B0C2WDPP3B) [**Fito Medics 5-HTP Supplement 400 mg 120 Capsules Mood & Relaxation Support Non-GMO Ingredients**FITO MEDIC'S**$14.06**4.3★**— 9%**](https://www.amazon.com/dp/B0BTMYDVJD) [**Clean Nutraceuticals GABA 750mg 5 HTP 200mg L Tryptophan 500mg L Theanine 200mg Ashwagandha SAM-e L-Glycine - Mood Support Vitamins for Women and Men with L-Tyrosine 5-HTP (5-Hydroxytryptophan)**Clean Nutraceuticals**$28.04**4.4★**— 1%**](https://www.amazon.com/dp/B0BVXY3SMH)
**~~View all trending →~~**
## **What buyers say about 5htp 400mg capsules**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Sleep Quality**21%
*“helps me sleep”*
**Stress/Anxiety**10%
*“Relief of anxiety”*
**Quality-Overall**10%
*“The capsules feel well made and consistent, which speaks to overall quality”*
**Efficiency**6%
*“Effective”*
**Focus Enhancement**6%
*“I have been impressed with my increased ability to focus”*
**Vitamin**5%
*“I love NOW vitamins and supplements”*
**Value For Money**4%
*“reasonable price”*
**Dosage**3%
*“Excellent product; you can feel it helping right from the very first dose”*
**Soothing Effect**3%
*“I believe I do feel a slightly calming affects”*
**Advertised Vs Actual Product**3%
*“As it was suggested by some web sites”*
### **What buyers complain about **
**Side Effects**17%
*“Made me nauseated”*
**Sleep Quality**17%
*“didn't help me sleep at all”*
**Acid Regulator/Stomach Ache Relief**7%
*“SEVERE STOMACH PAIN”*
**Dosage**6%
*“Dose too high”*
**Functionality-Overall**4%
*“Not very effective”*
**Value For Money**3%
*“BIG waste of money”*
**Ingredients-Overall**3%
*“Be careful of ingredients”*
**Stress/Anxiety**2%
*“definitely anxiety inducing”*
**Allergies**2%
*“Induces nausea”*
**Smell**2%
*“Smells terrible”*
### **Top return reasons **
**Acid Regulator/Stomach Ache Relief**50%
**Functionality-Overall**25%
**Advertised Vs Actual Product**25%
## **Common questions**
- **Is 5htp 400mg capsules profitable to sell on Amazon United States?**
- The niche generates $49K/yr across 13 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is -11.6%. Flapen's verdict: Skip it (49/100).
- **How competitive is the 5htp 400mg capsules niche?**
- 11 brands and 30 sellers compete. The top 5 products take 73% of clicks and top 5 brands hold 73% of demand.
- **What do buyers complain about in 5htp 400mg capsules?**
- Top complaints mined from reviews: Side Effects, Sleep Quality, Acid Regulator/Stomach Ache Relief. The return rate is 0.0%.
- **When does demand for 5htp 400mg capsules peak?**
- Demand is steady year-round — the busiest month runs 1.6× the quietest.
- **What does it cost to enter the 5htp 400mg capsules niche?**
- Listings span $14.06–$36.52; the average listing price is $22.02 (sweet spot $15–$100). The average incumbent carries 4,932 reviews — the moat a new listing must climb.
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