5htp
Worth a lookShows low returns (0.0%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Conversion
Incredible15.8%search→purchase rate — share of searches ending in a sale
Market size
Incredible$3.0M$3.0M/yr · 830K searches
Avg price
Incredible$22.84avg listing price — sweet spot $15–$100
Price range
Great$4.75–$59.27cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Good73%top-5 brand share — brands hold most of the demand
Competition
Okay59%top-5 click share — leaders hold, buyers still browse
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Review moat
Bad4,915.43avg incumbent reviews — the moat a new listing must climb
Growth
Bad-5.3%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, 5htp is a $3.0M/yr Amazon United States market (830K searches/yr). The top 5 brands hold 73% of demand. Verdict: Worth a look — 63/100.
Data updated Jul 25, 2026 · scored weekly · How we score niches
5htp market data
- Units sold / yr
- 100K–125K
- avg 6,000–8,000/product
- Revenue / yr
- $2.3M–$2.9M
- units × avg price
- Conversion rate
- 15.8%
- Avg BSR
- #160
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 65%
- Out of stock
- 0.0%
- Avg brand age
- 67 months
- Avg seller age
- 158 days
Competition & brand share
The top 5 products take 59% of clicks — established leaders, but buyers still shop beyond them.Brands
17 rising
Sellers
564
Top-5 brand share
73%
Top 20: 98%
Top-5 click share
59%
Top 20: 97%
Open market
22%
- NOW Foods29%
- Nutricost22%
- THORNE10%
- Triquetra Health7%
- DR. EMIL NUTRITION5%
- Natrol5%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -5.3% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.3×
Top 5htp search terms
- 5htp285K/yr
- 5 htp163K/yr
- 5-htp113K/yr
- 5 htp supplement56K/yr
- 5htp 200mg capsules30K/yr
- htp-515K/yr
- 5-htp supplements28K/yr
- 5htp 100mg29K/yr
- 5 htp plus supplement 200 mg15K/yr
- htp5 supplement20K/yr
Top 5htp 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.
All 23 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Nutricost 5-HTP 200mg 120 Vegetarian Capsules (5-Hydroxytryptophan)
Nutricost$16.794.5★3,818 rev
NOW Foods Supplements 5-HTP (5-hydroxytryptophan) 100 mg Neurotransmitter Support* 60 Veg Capsules
NOW Foods$9.834.6★10,850 rev
THORNE - 5-HTP - Contains Vitamin B6 - Serotonin Support for Sleep & Stress Management* - 5-Hydroxytryptophan Supplement - Third-Party Certified - Gluten Dairy & Soy-Free - 90 Capsules
THORNE$37.934.5★1,027 rev
NOW Supplements 5-HTP (5-hydroxytryptophan) 100 mg Neurotransmitter Support* 120 Veg Capsules
NOW Foods$14.804.6★10,850 rev
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$23.744.5★1,320 rev
Newest
by launch date
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$21.70126 rev
2 Pack 300MG 5-HTP GABA Sleep Supplement Gummies with 200mg L-Theanine Supplement for Brain Mood Stabilizer and Sleep Support Melatonin-Free Omega 3-6-9 for Natural Zzzs Blueberry Flavor
lickshine$28.93262 rev
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$36.5224,587 rev
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$28.042,665 rev
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$23.741,320 rev
Trending
90-day click momentumNOW Foods Supplements 5-HTP (5-hydroxytryptophan) 100 mg Neurotransmitter Support* 60 Veg Capsules
NOW Foods$9.834.6★
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$21.704.4★
2 Pack 300MG 5-HTP GABA Sleep Supplement Gummies with 200mg L-Theanine Supplement for Brain Mood Stabilizer and Sleep Support Melatonin-Free Omega 3-6-9 for Natural Zzzs Blueberry Flavor
lickshine$28.934.4★
Rave Doctor 5 HTP Supplement - Essential Rave Vitamins for Festival Goers Rave Accessories Festival Essentials Festival Gear Rave Essentials 5htp Supplement
Rave Doctor$28.424.6★
NOW Foods Supplements 5-HTP (5-hydroxytryptophan) 50 mg Neurotransmitter Support* 30 Veg Capsules
NOW Foods$4.754.5★
What buyers say about 5htp
What buyers praise and complain about, mined from review topics.What buyers love
“better sleep”
“Very effective at calming stress”
“Good Quality”
“Great noticeable support for mood”
“The benefits that this vitamin offers”
“Good product at a good price”
“Effective”
“Worked as advertised”
“Not sugary, just the flavor”
“The capsules are easy to take”
What buyers complain about
“got worse sleep as a result”
“other bad side effects”
“Did not Work for me”
“SEVERE STOMACH PAIN”
“I noticed the dosage of these tablets was higher than other tablets I used before”
“A waste of money”
“Causes you to feel irritated and groggy”
“definitely anxiety inducing”
“Be careful of ingredients”
“But the Pills Are Very Large”
Top return reasons
Common questions
- Is 5htp profitable to sell on Amazon United States?
- The niche generates $3.0M/yr across 23 tracked products. 90-day search growth is -5.3%. Flapen's verdict: Worth a look (63/100).
- How competitive is the 5htp niche?
- 17 brands and 564 sellers compete. The top 5 products take 59% of clicks and top 5 brands hold 73% of demand.
- What do buyers complain about in 5htp?
- Top complaints mined from reviews: Sleep Quality, Side Effects, Functionality-Overall. The return rate is 0.0%.
- When does demand for 5htp peak?
- Demand is steady year-round — the busiest month runs 1.3× the quietest.
- What does it cost to enter the 5htp niche?
- Listings span $4.75–$59.27; the average listing price is $22.84 (sweet spot $15–$100). The average incumbent carries 4,915 reviews — the moat a new listing must climb.