melatonin 300 mcg
Skip itA concentrated shelf (top 5 take 74% of clicks) — this niche doesn't clear our bar today.
Returns
Incredible0.0%return rate — above 6% kills the launch gate
Conversion
Incredible14.4%search→purchase rate — share of searches ending in a sale
Avg price
Good$14.09avg listing price — sweet spot $15–$100
Price range
Good$4.78–$30.26cheapest to priciest tracked listing — scored on the share inside $15–$100
Market size
Okay$180K$180K/yr · 89K searches
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Brand share
Okay90%top-5 brand share — brands hold most of the demand
Growth
Okay+0.1%90-day search growth — must beat 0% to launch
Review moat
Bad5,513.93avg incumbent reviews — the moat a new listing must climb
Competition
Bad74%top-5 click share — a locked-up shelf
Competition
The top 5 products capture 74% of clicks — a locked-up shelf that new listings rarely crack.Brands
9 flat
Sellers
32
Top-5 brand share
90%
Open market
6%
- Life Extension40%
- Pure Encapsulations18%
- Carlyle13%
- Nature's Bounty10%
- Natrol8%
- ZzzQuil4%
- Open — no brand owns it (3 brands, 6%)
Product shelf
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 14 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Life Extension Melatonin 300 mcg Gentle Sleep Support Healthy circadian Rhythms Cellular Defense Gluten-Free Non-GMO Vegetarian 100 Capsules
Life Extension$7.194.5★1,133 rev
Carlyle Melatonin 300 mcg | 365 Tablets | Low Dose | Vegetarian Non-GMO Gluten Free
Carlyle$10.014.6★536 rev
Pure Encapsulations Melatonin 0.5 mg - Natural Sleep Helper for Bedtime - Regulates Sleep-Wake Cycle* - 0.5 mg Melatonin - Vegan & Non-GMO - 60 Capsules
Pure Encapsulations$12.214.6★1,202 rev
Life Extension Melatonin 6 Hour Timed Release 300 mcg Extended-Release Formula for Gentle Sleep Support Healthy circadian Rhythms Cellular Defense Gluten-Free Non-GMO Vegetarian 100 Tablets
Life Extension$8.034.4★1,822 rev
Natures Bounty Melatonin 100% Drug Free Sleep Aid Promotes Relaxation and Sleep Health 1mg 180 Tablets
Nature's Bounty$4.784.6★9,967 rev
Newest
by launch dateCarlyle Melatonin 300 mcg | 365 Tablets | Low Dose | Vegetarian Non-GMO Gluten Free
Carlyle$10.01536 rev
Natrol Melatonin 1mg Fast Dissolve Tablets - Strawberry Flavor 200 Count Sleep Aids for Adults Fast Dissolve Melatonin for Adults 200-Day Supply
Natrol$13.9716,994 rev
ZzzQuil Pure Zzzs Melatonin Gummies Sleep Aid Melatonin 2mg with Chamomile and Lavender Melatonin Sleep Gummies Sleep Aids for Adults Wildberry Vanilla Flavored 72 Sleep Gummies
ZzzQuil$17.0224,905 rev
Landau 0.3mg-300 mcg Melty Melatonin for Kids & Adults Easy-to-Take Fast-Dissolving Helps You Fall Asleep Faster Kosher Made in The USA 100 Tablets Cherry Flavor
LANDAU$15.75138 rev
Pure Encapsulations Melatonin-SR - Extended Release Melatonin - Supports Restful Sleep* - Sleep Supplement - Gluten Free & Vegan - 60 Capsules
Pure Encapsulations$18.821,542 rev
Trending
90-day click momentumNatrol Melatonin 1mg Fast Dissolve Tablets - Strawberry Flavor 200 Count Sleep Aids for Adults Fast Dissolve Melatonin for Adults 200-Day Supply
Natrol$13.974.7★
ZzzQuil Pure Zzzs Melatonin Gummies Sleep Aid Melatonin 2mg with Chamomile and Lavender Melatonin Sleep Gummies Sleep Aids for Adults Wildberry Vanilla Flavored 72 Sleep Gummies
ZzzQuil$17.024.5★
Melatonin Capsules | 300mcg | 120 Pills | Supports Healthy Sleep Cycles | Promotes Relaxation | Natural Sleep Aid Supplement
Nootropics Depot$19.924.5★
Pure Encapsulations Melatonin 0.5 mg - Natural Sleep Helper for Bedtime - Regulates Sleep-Wake Cycle* - 0.5 mg Melatonin - Vegan & Non-GMO - 180 Capsules
Pure Encapsulations$30.264.6★
Natrol Fast Dissolve Melatonin 1 mg Sleep Support for Adults Sleeping Aid Dietary Supplements Melatonin for Adults 90 Tablets
Natrol$6.594.7★
Demand & seasonality
Weekly Amazon search volume, last 103 weeks — +0.1% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.4×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“Helps me sleep”
“Perfect dose”
“Good quality”
“Tastes Like Candy”
“This is effective”
“reasonable price”
“Works as advertised”
“It helps me relax”
“ingredients are safe”
“had no issues”
What buyers complain about
“No sleep”
“Doesn't work”
“5mg or 10mg or whatever is way too much”
“Expensive”
“Strange After Taste And Feel”
“And difficult to open”
“but overall, its a bad product”
“too big”
“Include hazardous and poisonous ingredients not listed on amazon”
“It gave me hives so badly I nearly went to hospital”