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.

Melatonin with L-theanine

Skip it

A small market ($60K/yr) — this niche doesn't clear our bar today.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Conversion

Great8.3%

search→purchase rate — share of searches ending in a sale

Avg price

Good$14.44

avg listing price — sweet spot $15–$100

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Brand share

Okay77%

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

Okay68%

top-5 click share — leaders hold, buyers still browse

Growth

Okay+1.4%

90-day search growth — must beat 0% to launch

Review moat

Bad5,353.22

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

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.

Peak months: Feb, Aug · busiest ÷ quietest = 2.0×

Open Trend

Top melatonin with l-theanine search terms shoppers use

The exact queries shoppers type, with yearly volume, growth and conversion.

melatonin l theanine15K/yr +17.8%4.1% conv.
melatonin with l-theanine15K/yr +4.8%4.6% conv.
melatonin and l-theanine5K/yr -2.1%6.4% conv.
nature made sleep longer5K/yr +20.4%15.3% conv.
sleep longer nature made3K/yr +34.8%19.9% conv.
melatonin l-theanine3K/yr -20.6%7.8% conv.
melatonin plus3K/yr -59.5%5.4% conv.

All 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.

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

Nature Made Wellblends Sleep Longer 35 Tri-Layer Tablets

Nature Made$14.884.3★1,515 rev

Natures Trove Melatonin 3mg + L Theanine 200mg Calm and Relaxation 120 Kosher Vegetarian Capsules

Nature's Trove$15.924.5★1,008 rev

Natrol Sleep+ Calm Adults Melatonin L-Theanine Strawberry 60 Gummies

Natrol$11.234.4★4,835 rev

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$22.714.2★6,758 rev

Carlyle Melatonin 10mg | 270 Tablets | with L-Theanine

Carlyle$10.084.7★7,748 rev

Newest

by launch date

Natrol Ultra Sleep 3-in-1 5mg Melatonin GABA & Botanicals 50 Gummies

Natrol$11.53151 rev

5mo ago

Natrol Ultra Sleep 3-in-1 5mg Melatonin GABA Botanicals 30 Tablets

Natrol$8.82162 rev

5mo ago

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$19.64320 rev

12mo ago

Natures Truth Melatonin with Magnesium Gummies | 60 Count

Nature's Truth$13.9772 rev

1y ago

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$18.505,272 rev

2y ago

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 Quality41%

“Helps me sleep”

Taste-Overall13%

“It tastes pretty good”

Efficiency5%

“Works Well”

Quality-Overall5%

“Excellent product”

Value For Money3%

“Great value”

Advertised Vs Actual Product3%

“Work as described”

Flavor2%

“Good flavor”

Ease Of Use2%

“easy to understand”

Dosage2%

“The dosage is appropriate for me”

Side Effects2%

“I appreciate that they help me sleep without harmful drug side effects”

What buyers complain about

Sleep Quality25%

“No sleep aid”

Functionality-Overall21%

“Did Not Work”

Taste-Overall8%

“Gross taste”

Value For Money4%

“Little pricey”

Dosage3%

“I suppose the dosage is considered fairly high”

Quality-Overall2%

“poor quality control”

Side Effects2%

“Chamomile can cause headaches if youre susceptible to any varieties of the ragweed family”

Smell1%

“the smell is very strong”

Hard Feel1%

“has some hard pieces in it”

Ingredients-Overall1%

“I don't know if the ingredients are low quality or the filler counteracts the active ingredients”

Top return reasons

Sleep Quality29%

Functionality-Overall29%

Value For Money8%

Smell5%

Side Effects5%

Moist/Dry4%

Age Suitability3%

Texture/Consistency-Overall3%

Taste-Overall3%

Flavor3%

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.