Is liquid melatonin profitable to sell on Amazon United States?

The niche generates $512K/yr across 20 tracked products. 90-day search growth is -4.7%. Flapen's verdict: Worth a look (57/100).

How competitive is the liquid melatonin niche?

16 brands and 598 sellers compete. The top 5 products take 56% of clicks and top 5 brands hold 72% of demand.

What do buyers complain about in liquid melatonin?

Top complaints mined from reviews: Sleep Quality, Taste-Overall, Functionality-Overall. The return rate is 0.0%.

When does demand for liquid melatonin peak?

Demand is steady year-round — the busiest month runs 1.3× the quietest.

What does it cost to enter the liquid melatonin niche?

Listings span $5.68–$35.44; the average listing price is $12.19 (sweet spot $15–$100). The average incumbent carries 3,198 reviews — the moat a new listing must climb.

Liquid Melatonin

Worth a look

Shows 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

Incredible13.0%

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

Price range

Good$5.68–$35.44

cheapest to priciest tracked listing — scored on the share inside $15–$100

Market size

Good$512K

$512K/yr · 323K searches

Brand share

Good72%

top-5 brand share — brands hold most of the demand

Avg price

Good$12.19

avg listing price — sweet spot $15–$100

Competition

Okay56%

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

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Review moat

Okay3,198

avg incumbent reviews — the moat a new listing must climb

Growth

Bad-4.7%

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

Is liquid melatonin profitable on Amazon?

According to Flapen's Amazon United States niche tracking, liquid melatonin is a $512K/yr Amazon United States market (323K searches/yr). The top 5 brands hold 72% of demand. Verdict: Worth a look — 57/100.

Data updated Jul 28, 2026 · scored weekly · How we score niches

liquid melatonin market size & sales

Units sold, revenue, conversion and listing quality across the tracked shelf.

Units sold / yr: 40K–50K; avg 2,000–2,500/product
Revenue / yr: $488K–$610K; units × avg price
Conversion rate: 13.0%
Avg BSR: #588
Page quality: 0%
Prime: 100%
Sponsored: 80%
Out of stock: 1.5%
Avg brand age: 73 months
Avg seller age: 154 days

Competition: brands, sellers & click share

The top 5 products take 56% of clicks — established leaders, but buyers still shop beyond them.

Brands

16 falling

Sellers

598

Top-5 brand share

72%

Top 20: 100%

Top-5 click share

56%

Top 20: 100%

Open market

22%

Natrol32%
Vitamatic14%
Carlyle12%
Zarbee's8%
NOW Foods6%
Pure Encapsulations6%

liquid melatonin demand & seasonality

Weekly Amazon search volume, last 104 weeks — -4.7% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.3×

Open Trend

Top liquid melatonin search terms shoppers use

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

liquid melatonin127K/yr -3.3%11.9% conv.
melatonin liquid63K/yr +5.8%10.1% conv.
melatonin drops39K/yr -0.2%10.2% conv.
liquid melatonin for adults21K/yr +5.7%10.6% conv.
melatonin drops for adults13K/yr -11.5%9.5% conv.
melatonin liquid drops5K/yr +87.2%11.6% conv.
liquid melatonin drops10K/yr -42.1%10.2% conv.
melatonin liquid for adults14K/yr -43.6%9.1% conv.
liquid melatonin 10mg9K/yr -35.1%10.8% conv.
melatonin oil4K/yr +9.7%1.8% conv.

All search terms

Top liquid melatonin 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 20 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Natrol Liquid Melatonin for Adults 1 mg Berry-Flavored 2 Fl Oz

Natrol$6.454.5★9,175 rev

Natrol Liquid Melatonin for Adults 2.5 mg Berry-Flavored 8 Fl Oz

Natrol$11.764.5★5,112 rev

Carlyle Melatonin 10mg | 2 fl oz Liquid Drops | Berry Flavor

Carlyle$6.964.3★2,694 rev

Vitamatic 2-Pack Melatonin 20mg Liquid Drops - 2 fl oz (59 ml) Each - Natural Berry Flavor - Non-GMO Vegetarian Supplement for Adults

Vitamatic$19.344.4★1,257 rev

Zarbees Kids Melatonin Sleep Supplement Liquid 1mg Melatonin 1 fl oz

Zarbee's$7.254.7★19,177 rev

Newest

by launch date

Clean Nutra Melatonin 10mg Drops Magnesium Vitamin B6 L-Theanine Valerian Hibiscus Lemon Balm Supplement Liquid Sugar-Free Vegan Non-GMO Natural Sleep Support Aid Lemon Tea Flavor 120mL Formula

Clean Nutraceuticals$22.3481 rev

1y ago

Zarbees Kids Sleep Supplement Liquid with 1mg Melatonin; Drug-Free & Effective; Easy to Take Natural Berry Flavor for Children Ages 3 and Up; 1 Fl Oz Bottles Pack of 2

Zarbee's$14.82797 rev

2y ago

FWS Liquid Melatonin Drops for Adults and Kids - 99% Pure Bioactive Melatonin - Organic Non-GMO Vegan - Minimal Ingredients - Easy Adjustable Dosing - Helps to Promote Restful Sleep - 2oz

FIREWATERSTAR HEALTH SUPPLEMENTS$19.00228 rev

2y ago

Piping Rock Kids Melatonin Liquid 1 fl oz | 1mg | Pack of 3 Bottles

Piping Rock$10.02445 rev

3y ago

Vitamatic Melatonin 20mg Liquid Drops 2 Fluid Ounce (59ml) Natural Berry Flavor for Adults Non-GMO Vegetarian Supplement

Vitamatic$11.581,257 rev

3y ago

What reviews say buyers love and hate about liquid melatonin

What buyers praise and complain about, mined from review topics.

What buyers love

Sleep Quality30%

“Sleep Like A Baby”

Efficiency11%

“Effective”

Quality-Overall9%

“Just as good as name brand”

Taste-Overall8%

“Great taste”

Value For Money6%

“Great and affordable”

Advertised Vs Actual Product5%

“Does work as it advertised”

Dosage4%

“Easy to adjust the dose”

Ease Of Use3%

“Easy to use”

Flavor3%

“Good flavor, no weird aftertaste”

Strength1%

“Effective”

What buyers complain about

Sleep Quality23%

“Didnt help or work with sleep”

Taste-Overall16%

“taste gross”

Functionality-Overall12%

“Did not work”

Dosage6%

“Requires a lot of the liquid to take even a half of the dose”

Flavor4%

“I hate berry flavors”

Quality-Overall3%

“Expected better quality”

Ease Of Use3%

“Hard to open and measure”

Value For Money2%

“Price isnt that good for something that didnt work very well”

Smell2%

“Does NOT smell like lavender”

Dilute/Watery2%

“Ridiculously diluted”

Top return reasons

Value For Money100%

Common liquid melatonin questions

Is liquid melatonin profitable to sell on Amazon United States?: The niche generates $512K/yr across 20 tracked products. 90-day search growth is -4.7%. Flapen's verdict: Worth a look (57/100).
How competitive is the liquid melatonin niche?: 16 brands and 598 sellers compete. The top 5 products take 56% of clicks and top 5 brands hold 72% of demand.
What do buyers complain about in liquid melatonin?: Top complaints mined from reviews: Sleep Quality, Taste-Overall, Functionality-Overall. The return rate is 0.0%.
When does demand for liquid melatonin peak?: Demand is steady year-round — the busiest month runs 1.3× the quietest.
What does it cost to enter the liquid melatonin niche?: Listings span $5.68–$35.44; the average listing price is $12.19 (sweet spot $15–$100). The average incumbent carries 3,198 reviews — the moat a new listing must climb.