---
title: "Melatonin with L-theanine — Amazon US Product Research"
canonical_url: "https://flapen.com/research/us/health-household/melatonin-with-l-theanine"
last_updated: "2026-08-12T13:28:51.292Z"
locale: en
meta:
description: "Amazon product research for melatonin with l-theanine: $5K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:description": "Amazon product research for melatonin with l-theanine: $5K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:title": "Melatonin with L-theanine — Amazon US Product Research"
---
# **Melatonin with L-theanine**
**Skip it**
A small market ($60K/yr) — this niche doesn't clear our bar today.
Market size 15Growth 27Conversion 80Competition 29Returns 100Price range 43Avg price 70Brand share 47Review moat 24Quality gap 58
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Conversion**
**Great****8.3%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Good****$14.44**
avg listing price — sweet spot $15–$100
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Okay****77%**
top-5 brand share — brands hold most of the demand
**Price range**
**Okay****$4.57–$22.71**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Competition**
**Okay****68%**
top-5 click share — leaders hold, buyers still browse
**Growth**
**Okay****+1.4%**
90-day search growth — must beat 0% to launch
**Review moat**
**Bad****5,353.22**
avg incumbent reviews — the moat a new listing must climb
**Market size**
**Bad****$60K**
$60K/yr · 50K searches
## **Is melatonin with l-theanine profitable on Amazon?**
According to Flapen's Amazon United States niche tracking, melatonin with l-theanine is a $60K/yr Amazon United States market (50K searches/yr). The top 5 brands hold 77% of demand. Demand peaks in Feb–Aug. Verdict: Skip it — 46/100.
Data updated Jul 28, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **melatonin with l-theanine market size & sales**
Units sold, revenue, conversion and listing quality across the tracked shelf.
- **Units sold / yr**
- **4K–5K**
- avg 100–250/product
- **Revenue / yr**
- **$58K–$72K**
- units × avg price
- **Conversion rate**
- **8.3%**
- **Avg BSR**
- **#281**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **72%**
- **Out of stock**
- **1.8%**
- **Avg brand age**
- **70 months**
- **Avg seller age**
- **146 days**
## **Competition: brands, sellers & click share**
The top 5 products take 68% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**13 **—flat
**Sellers**
**629**
**Top-5 brand share**
**77%**
Top 20: 100%
**Top-5 click share**
**68%**
Top 20: 100%
**Open market**
**17%**
- Nature Made25% - Nature's Trove16% - Natrol16% - OLLY10% - MEDCHOICE10% - Carlyle6% - Open — no brand owns it (7 brands, 17%)
## **melatonin with l-theanine demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +1.4% search growth over the last 90 days.
3K2KSpike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Feb, Aug · busiest ÷ quietest = 2.0×
[**Open Trend **](https://flapen.com/research/us/health-household/melatonin-with-l-theanine/trend)
## **Top melatonin with l-theanine search terms shoppers use**
The exact queries shoppers type, with yearly volume, growth and conversion.
- **melatonin l theanine**15K/yr+17.8%4.1% conv. - **melatonin with l-theanine**15K/yr+4.8%4.6% conv. - **melatonin and l-theanine**5K/yr-2.1%6.4% conv. - **nature made sleep longer**5K/yr+20.4%15.3% conv. - **sleep longer nature made**3K/yr+34.8%19.9% conv. - **melatonin l-theanine**3K/yr-20.6%7.8% conv. - **melatonin plus**3K/yr-59.5%5.4% conv. [**All search terms **](https://flapen.com/research/us/health-household/melatonin-with-l-theanine/search-terms)
## **Top melatonin with l-theanine 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%$6K20%$12K30%$18K40%$24K101001K10K100K 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**Nature Made Wellblends Sleep Longer 35 Tri-Layer Tablets**Nature Made**$14.88**4.3★1,515 rev](https://www.amazon.com/dp/B09SQWMX24) [2**Natures Trove Melatonin 3mg + L Theanine 200mg Calm and Relaxation 120 Kosher Vegetarian Capsules**Nature's Trove**$15.92**4.5★1,008 rev](https://www.amazon.com/dp/B07T99BDDG) [3**Natrol Sleep+ Calm Adults Melatonin L-Theanine Strawberry 60 Gummies**Natrol**$11.23**4.4★4,835 rev](https://www.amazon.com/dp/B08V3LLDJS) [4**12-in-1 Melatonin Sleep Capsules - Natural Sleep Aids for Adults with Melatonin 5mg and Magnesium Glycinate 500mg Sleep Aid with Ashwagandha L Theanine Valerian Root GABA 5-HTP (90ct Pack of 1)**MEDCHOICE**$22.71**4.2★6,758 rev](https://www.amazon.com/dp/B099JXNWYL) [5**Carlyle Melatonin 10mg | 270 Tablets | with L-Theanine**Carlyle**$10.08**4.7★7,748 rev](https://www.amazon.com/dp/B094NYJJ7Z)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Natrol Ultra Sleep 3-in-1 5mg Melatonin GABA & Botanicals 50 Gummies**Natrol**$11.53**151 rev5mo ago](https://www.amazon.com/dp/B0GL9167QQ) [**Natrol Ultra Sleep 3-in-1 5mg Melatonin GABA Botanicals 30 Tablets**Natrol**$8.82**162 rev5mo ago](https://www.amazon.com/dp/B0GL4LF8GL) [**ZzzQuil Pure Zzzs +Magnesium Capsules L-Theanine and Magnesium Sleep Aid 4-in-1 Magnesium: Citrate Bisglycinate Oxide and Carbonate Sleep Aids for Adults 90 Sleep Capsules**Vicks**$19.64**320 rev12mo ago](https://www.amazon.com/dp/B0FK6QDW7S) [**Natures Truth Melatonin with Magnesium Gummies | 60 Count**Nature's Truth**$13.97**72 rev1y ago](https://www.amazon.com/dp/B0F63V5J3V) [**OLLY Extra Strength Sleep Gummies for Adults 5 mg Melatonin Sleep Support Supplement* L-Theanine & Botanical Extracts Restful Sleep Support* BlackBerry Zen Flavor Gluten Free 90 Count**OLLY**$18.50**5,272 rev2y ago](https://www.amazon.com/dp/B0CQ6XMCZZ)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Natrol Ultra Sleep 3-in-1 5mg Melatonin GABA Botanicals 30 Tablets**Natrol**$8.82**4.2★**▲ 318%**](https://www.amazon.com/dp/B0GL4LF8GL) [**Natrol Ultra Sleep 3-in-1 5mg Melatonin GABA & Botanicals 50 Gummies**Natrol**$11.53**4.3★**▲ 309%**](https://www.amazon.com/dp/B0GL9167QQ) [**Natures Truth Melatonin with Magnesium Gummies | 60 Count**Nature's Truth**$13.97**4.6★**▲ 180%**](https://www.amazon.com/dp/B0F63V5J3V) [**ZzzQuil Pure Zzzs +Magnesium Capsules L-Theanine and Magnesium Sleep Aid 4-in-1 Magnesium: Citrate Bisglycinate Oxide and Carbonate Sleep Aids for Adults 90 Sleep Capsules**Vicks**$19.64**4.2★**▲ 73%**](https://www.amazon.com/dp/B0FK6QDW7S) [**Piping Rock Melatonin 10mg | 120 Tablets | with L-Theanine**Piping Rock**$4.57**4.4★**▲ 65%**](https://www.amazon.com/dp/B07ZS33J45)
**~~View all trending →~~**
## **What reviews say buyers love and hate about melatonin with l-theanine**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Sleep Quality**41%
*“Helps me sleep”*
**Taste-Overall**13%
*“It tastes pretty good”*
**Efficiency**5%
*“Works Well”*
**Quality-Overall**5%
*“Excellent product”*
**Value For Money**3%
*“Great value”*
**Advertised Vs Actual Product**3%
*“Work as described”*
**Flavor**2%
*“Good flavor”*
**Ease Of Use**2%
*“easy to understand”*
**Dosage**2%
*“The dosage is appropriate for me”*
**Side Effects**2%
*“I appreciate that they help me sleep without harmful drug side effects”*
### **What buyers complain about **
**Sleep Quality**25%
*“No sleep aid”*
**Functionality-Overall**21%
*“Did Not Work”*
**Taste-Overall**8%
*“Gross taste”*
**Value For Money**4%
*“Little pricey”*
**Dosage**3%
*“I suppose the dosage is considered fairly high”*
**Quality-Overall**2%
*“poor quality control”*
**Side Effects**2%
*“Chamomile can cause headaches if youre susceptible to any varieties of the ragweed family”*
**Smell**1%
*“the smell is very strong”*
**Hard Feel**1%
*“has some hard pieces in it”*
**Ingredients-Overall**1%
*“I don't know if the ingredients are low quality or the filler counteracts the active ingredients”*
### **Top return reasons **
**Sleep Quality**29%
**Functionality-Overall**29%
**Value For Money**8%
**Smell**5%
**Side Effects**5%
**Moist/Dry**4%
**Age Suitability**3%
**Texture/Consistency-Overall**3%
**Taste-Overall**3%
**Flavor**3%
## **Common melatonin with l-theanine questions**
- **Is melatonin with l-theanine profitable to sell on Amazon United States?**
- The niche generates $60K/yr across 18 tracked products. 3 of 3 products launched in the last 360 days are still selling. 90-day search growth is +1.4%. Flapen's verdict: Skip it (46/100).
- **How competitive is the melatonin with l-theanine niche?**
- 13 brands and 629 sellers compete. The top 5 products take 68% of clicks and top 5 brands hold 77% of demand.
- **What do buyers complain about in melatonin with l-theanine?**
- Top complaints mined from reviews: Sleep Quality, Functionality-Overall, Taste-Overall. The return rate is 0.0%.
- **When does demand for melatonin with l-theanine peak?**
- Demand peaks in Feb–Aug; the busiest month runs 2.0× the quietest.
- **What does it cost to enter the melatonin with l-theanine niche?**
- Listings span $4.57–$22.71; the average listing price is $14.44 (sweet spot $15–$100). The average incumbent carries 5,353 reviews — the moat a new listing must climb.
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