L Tryptophan 1000mg
Worth a lookShows searches that convert (19.4% search→purchase), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Conversion
Incredible19.4%search→purchase rate — share of searches ending in a sale
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Avg price
Incredible$29.63avg listing price — sweet spot $15–$100
Price range
Great$9.86–$119.53cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Good62%top-5 brand share — brands hold most of the demand
Review moat
Good1,261.44avg incumbent reviews — the moat a new listing must climb
Competition
Good55%top-5 click share — leaders hold, buyers still browse
Quality gap
Okay4.5★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
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.No pronounced peak months · busiest ÷ quietest = 1.3×
Top l tryptophan 1000mg search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.- l tryptophan 1000mg8K/yr
- l-tryptophan 1000mg capsules5K/yr
- tryptophan 1000mg3K/yr
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.
All 18 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
NOW Foods Supplements L-Tryptophan 1 000 mg Double Strength Encourages Positive Mood* Supports Relaxation* 60 Tablets
NOW Foods$19.234.5★2,064 rev
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$13.284.4★72 rev
Horbach L Tryptophan 1500mg Capsules | 240 Count | Nighttime Formula
Horbäach$19.654.4★2,402 rev
Vitamatic L-Tryptophan 1000mg 120 Tablets (120 Tablets (Pack of 1)) (1 Bottle)
Vitamatic$14.594.6★355 rev
Amazing Formulas L-Tryptophan 1000mg Tablets Supplement | Non-GMO | Gluten Free | Made in USA (240 Count)
Amazing Nutrition$34.944.4★2,084 rev
Newest
by launch dateL-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$13.2872 rev
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$17.5867 rev
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$18.75224 rev
Amazing Formulas L-Tryptophan 1000mg Tablets Supplement | Non-GMO | Gluten Free | Made in USA (240 Count)
Amazing Nutrition$34.942,084 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
Trending
90-day click momentum
Pure Encapsulations L-Tryptophan | Amino Acid Supplement for Relaxation Serotonin Support PMS and Sleep* | 90 Capsules
Pure Encapsulations$69.514.6★
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$13.284.4★
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NOW Foods - Now Foods L-tryptophan 1000mg Tablets 60-Count [Health and Beauty](Pack of 2)
NOW Foods$35.974.5★
PROTOCOL FOR LIFE BALANCE L-Tryptophan 1000mg - Sleep Support Promotes Relaxation - 60 Tabs
PROTOCOL FOR LIFE BALANCE$37.834.4★
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$18.754.5★
What reviews say buyers love and hate about l tryptophan 1000mg
What buyers praise and complain about, mined from review topics.What buyers love
“Helps with sleep”
“Great brand with quality supplements”
“Very effective at calming stress”
“Actually helped improve my focus”
“reasonable price”
“Effective”
“Ive been happy with this Clean Nutraceuticals supplement so far”
“Effective”
“I found that just taking a single 500mg capsule was enough for me”
“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
“didn't help me sleep at all”
“Didn't work for me”
“Could make you VERY nauseous”
“Can cause stomach issues”
“However, I took off three stars because of as others have said, the black pepper ingredient is too much”
“Overpriced”
“Since the dose is pretty high”
“Ineffective”
“definitely anxiety inducing”
“I am appalled by the lack of quality control for this product”
Top return reasons
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.