---
title: "L Tryptophan 1000mg — $8K/mo Amazon US Product Research"
canonical_url: "https://flapen.com/research/us/health-household/l-tryptophan-1000mg"
last_updated: "2026-08-12T15:05:56.331Z"
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description: "Amazon product research for l tryptophan 1000mg: $8K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:description": "Amazon product research for l tryptophan 1000mg: $8K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:title": "L Tryptophan 1000mg — $8K/mo Amazon US Product Research"
---
# **L Tryptophan 1000mg**
**Worth a look**
Shows searches that convert (19.4% search→purchase), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 23Growth 40Conversion 100Competition 50Returns 100Price range 77Avg price 95Brand share 71Review moat 56Quality gap 47
**Conversion**
**Incredible****19.4%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Avg price**
**Incredible****$29.63**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$9.86–$119.53**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Good****62%**
top-5 brand share — brands hold most of the demand
**Review moat**
**Good****1,261.44**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Good****55%**
top-5 click share — leaders hold, buyers still browse
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Growth**
**Okay****+11.6%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****$90K**
$90K/yr · 16K searches
## **Is l tryptophan 1000mg profitable on Amazon?**
According to Flapen's Amazon United States niche tracking, l tryptophan 1000mg is a $90K/yr Amazon United States market (16K searches/yr). The top 5 brands hold 62% of demand. Verdict: Worth a look — 60/100.
Data updated Jul 25, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **l tryptophan 1000mg market size & sales**
Units sold, revenue, conversion and listing quality across the tracked shelf.
- **Units sold / yr**
- **3K–3K**
- avg 100–250/product
- **Revenue / yr**
- **$74K–$89K**
- units × avg price
- **Conversion rate**
- **19.4%**
- **Avg BSR**
- **#1,294**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **78%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **100 months**
- **Avg seller age**
- **203 days**
## **Competition: brands, sellers & click share**
The top 5 products take 55% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**14 **▲rising
**Sellers**
**36**
**Top-5 brand share**
**62%**
Top 20: 100%
**Top-5 click share**
**55%**
Top 20: 100%
**Open market**
**31%**
- NOW Foods27% - Amazing Nutrition10% - Natures Craft9% - Horbäach9% - Vitamatic8% - Nutricost7%
## **l tryptophan 1000mg demand & seasonality**
Weekly Amazon search volume, last 100 weeks — +11.6% search growth over the last 90 days.
500300Spike '25Prime Day '25Spike '26 seasonDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.3×
[**Open Trend **](https://flapen.com/research/us/health-household/l-tryptophan-1000mg/trend)
## **Top l tryptophan 1000mg search terms shoppers use**
The exact queries shoppers type, with yearly volume, growth and conversion.
- **l tryptophan 1000mg**8K/yr+23.1%13.5% conv. - **l-tryptophan 1000mg capsules**5K/yr-23.2%18.4% conv. - **tryptophan 1000mg**3K/yr+48.6%13.8% conv. [**All search terms **](https://flapen.com/research/us/health-household/l-tryptophan-1000mg/search-terms)
## **Top l tryptophan 1000mg products & what they sell for**
Every tracked product — its share of the shelf, its review moat, and what it sells for.
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%$18K30%$27K40%$36K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 18 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**NOW Foods Supplements L-Tryptophan 1 000 mg Double Strength Encourages Positive Mood* Supports Relaxation* 60 Tablets**NOW Foods**$19.23**4.5★2,064 rev](https://www.amazon.com/dp/B002JNIAQW) [2**L-Tryptophan Capsules 1000mg per Serving - L Tryptophan Supplement for Sleep Promotes Relaxation & Emotional Well-Being for Women & Men - Potent Pure Mood Support Supplement for Adults - 120 Count**Natures Craft**$13.28**4.4★72 rev](https://www.amazon.com/dp/B0FDXBQPKC) [3**Horbach L Tryptophan 1500mg Capsules | 240 Count | Nighttime Formula**Horbäach**$19.65**4.4★2,402 rev](https://www.amazon.com/dp/B07JNGTF3W) [4**Vitamatic L-Tryptophan 1000mg 120 Tablets (120 Tablets (Pack of 1)) (1 Bottle)**Vitamatic**$14.59**4.6★355 rev](https://www.amazon.com/dp/B0B62R6B61) [5**Amazing Formulas L-Tryptophan 1000mg Tablets Supplement | Non-GMO | Gluten Free | Made in USA (240 Count)**Amazing Nutrition**$34.94**4.4★2,084 rev](https://www.amazon.com/dp/B0CKRW54L2)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**L-Tryptophan Capsules 1000mg per Serving - L Tryptophan Supplement for Sleep Promotes Relaxation & Emotional Well-Being for Women & Men - Potent Pure Mood Support Supplement for Adults - 120 Count**Natures Craft**$13.28**72 rev1y ago](https://www.amazon.com/dp/B0FDXBQPKC) [**High Strength L Tryptophan Capsules | L Tryptophan Supplement for Sleep and Relaxation with 1500mg per Serving | Vegan Non-GMO Soy and Gluten Free | Made in US cGMP Labs (80 Servings)**Healing Awakening**$17.58**67 rev1y ago](https://www.amazon.com/dp/B0F67DRMCC) [**BulkSupplements.com L-Tryptophan Capsules - Tryptophan Supplement L-Trptophan 500mg - Amino Acid Supplement Gluten Free - 1 Capsule per Serving 240 Capsules (Pack of 1)**BulkSupplements**$18.75**224 rev2y ago](https://www.amazon.com/dp/B0CKWLK292) [**Amazing Formulas L-Tryptophan 1000mg Tablets Supplement | Non-GMO | Gluten Free | Made in USA (240 Count)**Amazing Nutrition**$34.94**2,084 rev2y ago](https://www.amazon.com/dp/B0CKRW54L2) [**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
[**Pure Encapsulations L-Tryptophan | Amino Acid Supplement for Relaxation Serotonin Support PMS and Sleep* | 90 Capsules**Pure Encapsulations**$69.51**4.6★**▲ 79%**](https://www.amazon.com/dp/B07H8PYJNH) [**L-Tryptophan Capsules 1000mg per Serving - L Tryptophan Supplement for Sleep Promotes Relaxation & Emotional Well-Being for Women & Men - Potent Pure Mood Support Supplement for Adults - 120 Count**Natures Craft**$13.28**4.4★**▲ 74%**](https://www.amazon.com/dp/B0FDXBQPKC) [](https://m.media-amazon.com/images/I/51TpjFowxzL.jpg)**NOW Foods - Now Foods L-tryptophan 1000mg Tablets 60-Count \[Health and Beauty\](Pack of 2)**NOW Foods**$35.97**4.5★**▲ 32%**](https://www.amazon.com/dp/B0041U022Q) [**PROTOCOL FOR LIFE BALANCE L-Tryptophan 1000mg - Sleep Support Promotes Relaxation - 60 Tabs**PROTOCOL FOR LIFE BALANCE**$37.83**4.4★**▲ 30%**](https://www.amazon.com/dp/B004BZIU3O) [**BulkSupplements.com L-Tryptophan Capsules - Tryptophan Supplement L-Trptophan 500mg - Amino Acid Supplement Gluten Free - 1 Capsule per Serving 240 Capsules (Pack of 1)**BulkSupplements**$18.75**4.5★**▲ 14%**](https://www.amazon.com/dp/B0CKWLK292)
**~~View all trending →~~**
## **What reviews say buyers love and hate about l tryptophan 1000mg**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Sleep Quality**27%
*“Helps with sleep”*
**Quality-Overall**11%
*“Great brand with quality supplements”*
**Stress/Anxiety**9%
*“Very effective at calming stress”*
**Focus Enhancement**5%
*“Actually helped improve my focus”*
**Value For Money**5%
*“reasonable price”*
**Efficiency**4%
*“Effective”*
**Vitamin**4%
*“Ive been happy with this Clean Nutraceuticals supplement so far”*
**Strength**4%
*“Effective”*
**Dosage**3%
*“I found that just taking a single 500mg capsule was enough for me”*
**Ingredients-Overall**3%
*“I like that it combines several ingredients in one bottle, including GABA, 5-HTP, L-tryptophan, L-theanine, and ashwagandha, instead of having to buy each one separately”*
### **What buyers complain about **
**Sleep Quality**24%
*“didn't help me sleep at all”*
**Functionality-Overall**10%
*“Didn't work for me”*
**Side Effects**6%
*“Could make you VERY nauseous”*
**Acid Regulator/Stomach Ache Relief**5%
*“Can cause stomach issues”*
**Ingredients-Overall**5%
*“However, I took off three stars because of as others have said, the black pepper ingredient is too much”*
**Value For Money**4%
*“Overpriced”*
**Dosage**4%
*“Since the dose is pretty high”*
**Strength**4%
*“Ineffective”*
**Stress/Anxiety**4%
*“definitely anxiety inducing”*
**Quality-Overall**3%
*“I am appalled by the lack of quality control for this product”*
### **Top return reasons **
**Acid Regulator/Stomach Ache Relief**50%
**Functionality-Overall**25%
**Quality-Overall**13%
**Comfort-Overall**13%
## **Common l tryptophan 1000mg questions**
- **Is l tryptophan 1000mg profitable to sell on Amazon United States?**
- The niche generates $90K/yr across 18 tracked products. 90-day search growth is +11.6%. Flapen's verdict: Worth a look (60/100).
- **How competitive is the l tryptophan 1000mg niche?**
- 14 brands and 36 sellers compete. The top 5 products take 55% of clicks and top 5 brands hold 62% of demand.
- **What do buyers complain about in l tryptophan 1000mg?**
- Top complaints mined from reviews: Sleep Quality, Functionality-Overall, Side Effects. The return rate is 0.0%.
- **When does demand for l tryptophan 1000mg peak?**
- Demand is steady year-round — the busiest month runs 1.3× the quietest.
- **What does it cost to enter the l tryptophan 1000mg niche?**
- Listings span $9.86–$119.53; the average listing price is $29.63 (sweet spot $15–$100). The average incumbent carries 1,261 reviews — the moat a new listing must climb.
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