---
title: "melatonin 300 mcg — Niche Verdict: Skip it (45/100) | Amazon United States - Flapen"
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last_updated: "2026-07-14T04:27:34.494Z"
locale: en
meta:
  description: "a concentrated shelf (top 5 take 74% of clicks) — melatonin 300 mcg doesn't clear our bar today."
  "og:description": "a concentrated shelf (top 5 take 74% of clicks) — melatonin 300 mcg doesn't clear our bar today."
  "og:title": "melatonin 300 mcg — Niche Verdict: Skip it (45/100) | Amazon United States - Flapen"
---

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# **melatonin 300 mcg**

**Skip it**

A concentrated shelf (top 5 take 74% of clicks) — this niche doesn't clear our bar today.

Market size 36Growth 25Conversion 97Competition 22Returns 100Price range 60Avg price 67Brand share 26Review moat 24Quality gap 28

**Returns**

**Incredible****0.0%**

return rate — above 6% kills the launch gate

**Conversion**

**Incredible****14.4%**

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

**Avg price**

**Good****$14.09**

avg listing price — sweet spot $15–$100

**Price range**

**Good****$4.78–$30.26**

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

**Market size**

**Okay****$180K**

$180K/yr · 89K searches

**Quality gap**

**Okay****4.6★**

avg incumbent rating — lower means beatable quality

**Brand share**

**Okay****90%**

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**

**Bad****5,513.93**

avg incumbent reviews — the moat a new listing must climb

**Competition**

**Bad****74%**

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.

0%10%$18K20%$36K30%$54K40%$72K1001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 14 tracked products in this niche — three views at once, no toggling.

### **Top sellers**

by 90-day click share

[1![Life Extension Melatonin 300 mcg Gentle Sleep Support Healthy circadian Rhythms Cellular Defense Gluten-Free Non-GMO Vegetarian 100 Capsules](https://m.media-amazon.com/images/I/41EKCCzvRoL.jpg)**Life Extension Melatonin 300 mcg Gentle Sleep Support Healthy circadian Rhythms Cellular Defense Gluten-Free Non-GMO Vegetarian 100 Capsules**Life Extension**$7.19**4.5★1,133 rev](https://www.amazon.com/dp/B000X9QZZ2) [2![Carlyle Melatonin 300 mcg | 365 Tablets | Low Dose | Vegetarian Non-GMO Gluten Free](https://m.media-amazon.com/images/I/41tzSjHV4lL.jpg)**Carlyle Melatonin 300 mcg | 365 Tablets | Low Dose | Vegetarian Non-GMO Gluten Free**Carlyle**$10.01**4.6★536 rev](https://www.amazon.com/dp/B09F3TMDHY) [3![Pure Encapsulations Melatonin 0.5 mg - Natural Sleep Helper for Bedtime - Regulates Sleep-Wake Cycle* - 0.5 mg Melatonin - Vegan & Non-GMO - 60 Capsules](https://m.media-amazon.com/images/I/4153VEAhHIL.jpg)**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**$12.21**4.6★1,202 rev](https://www.amazon.com/dp/B000VYVU9K) [4![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](https://m.media-amazon.com/images/I/41QmFHYIqYL.jpg)**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**$8.03**4.4★1,822 rev](https://www.amazon.com/dp/B00CDABRUW) [5![Natures Bounty Melatonin 100% Drug Free Sleep Aid Promotes Relaxation and Sleep Health 1mg 180 Tablets](https://m.media-amazon.com/images/I/51409xE00IL.jpg)**Natures Bounty Melatonin 100% Drug Free Sleep Aid Promotes Relaxation and Sleep Health 1mg 180 Tablets**Nature's Bounty**$4.78**4.6★9,967 rev](https://www.amazon.com/dp/B0013NB6ZQ)

**~~View all top sellers →~~**

### **Newest**

by launch date

[![Carlyle Melatonin 300 mcg | 365 Tablets | Low Dose | Vegetarian Non-GMO Gluten Free](https://m.media-amazon.com/images/I/41tzSjHV4lL.jpg)**Carlyle Melatonin 300 mcg | 365 Tablets | Low Dose | Vegetarian Non-GMO Gluten Free**Carlyle**$10.01**536 rev4y ago](https://www.amazon.com/dp/B09F3TMDHY) [![Natrol Melatonin 1mg Fast Dissolve Tablets - Strawberry Flavor 200 Count Sleep Aids for Adults Fast Dissolve Melatonin for Adults 200-Day Supply](https://m.media-amazon.com/images/I/41CuGiEbenL.jpg)**Natrol Melatonin 1mg Fast Dissolve Tablets - Strawberry Flavor 200 Count Sleep Aids for Adults Fast Dissolve Melatonin for Adults 200-Day Supply**Natrol**$13.97**16,994 rev7y ago](https://www.amazon.com/dp/B07S5XBJV7) [![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](https://m.media-amazon.com/images/I/41gKKeOfRHL.jpg)**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**$17.02**24,905 rev7y ago](https://www.amazon.com/dp/B07N46LTJJ) [![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](https://m.media-amazon.com/images/I/41psEnG-g8L.jpg)**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**$15.75**138 rev7y ago](https://www.amazon.com/dp/B07LDVJXSQ) [![Pure Encapsulations Melatonin-SR - Extended Release Melatonin - Supports Restful Sleep* - Sleep Supplement - Gluten Free & Vegan - 60 Capsules](https://m.media-amazon.com/images/I/418AHUz779L.jpg)**Pure Encapsulations Melatonin-SR - Extended Release Melatonin - Supports Restful Sleep* - Sleep Supplement - Gluten Free & Vegan - 60 Capsules**Pure Encapsulations**$18.82**1,542 rev9y ago](https://www.amazon.com/dp/B071KN44Z8)

**~~View all new products →~~**

### **Trending**

90-day click momentum

[![Natrol Melatonin 1mg Fast Dissolve Tablets - Strawberry Flavor 200 Count Sleep Aids for Adults Fast Dissolve Melatonin for Adults 200-Day Supply](https://m.media-amazon.com/images/I/41CuGiEbenL.jpg)**Natrol Melatonin 1mg Fast Dissolve Tablets - Strawberry Flavor 200 Count Sleep Aids for Adults Fast Dissolve Melatonin for Adults 200-Day Supply**Natrol**$13.97**4.7★**▲ 104%**](https://www.amazon.com/dp/B07S5XBJV7) [![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](https://m.media-amazon.com/images/I/41gKKeOfRHL.jpg)**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**$17.02**4.5★**▲ 30%**](https://www.amazon.com/dp/B07N46LTJJ) [![Melatonin Capsules | 300mcg | 120 Pills | Supports Healthy Sleep Cycles | Promotes Relaxation | Natural Sleep Aid Supplement](https://m.media-amazon.com/images/I/51FqcJhnALL.jpg)**Melatonin Capsules | 300mcg | 120 Pills | Supports Healthy Sleep Cycles | Promotes Relaxation | Natural Sleep Aid Supplement**Nootropics Depot**$19.92**4.5★**▲ 20%**](https://www.amazon.com/dp/B01HFN5NVU) [![Pure Encapsulations Melatonin 0.5 mg - Natural Sleep Helper for Bedtime - Regulates Sleep-Wake Cycle* - 0.5 mg Melatonin - Vegan & Non-GMO - 180 Capsules](https://m.media-amazon.com/images/I/41w2rvgqVQL.jpg)**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**$30.26**4.6★**▲ 11%**](https://www.amazon.com/dp/B00166FXY0) [![Natrol Fast Dissolve Melatonin 1 mg Sleep Support for Adults Sleeping Aid Dietary Supplements Melatonin for Adults 90 Tablets](https://m.media-amazon.com/images/I/411RXPpyA5L.jpg)**Natrol Fast Dissolve Melatonin 1 mg Sleep Support for Adults Sleeping Aid Dietary Supplements Melatonin for Adults 90 Tablets**Natrol**$6.59**4.7★**— 7%**](https://www.amazon.com/dp/B00C3Q5JVE)

**~~View all trending →~~**

## **Demand & seasonality**

Weekly Amazon search volume, last 103 weeks — +0.1% search growth over the last 90 days.

2K2KSpike '25Spike '26 seasonDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.4×

## **Reviews**

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

### **What buyers love **

**Sleep Quality**35%

*“Helps me sleep”*

**Dosage**11%

*“Perfect dose”*

**Quality-Overall**9%

*“Good quality”*

**Taste-Overall**6%

*“Tastes Like Candy”*

**Efficiency**5%

*“This is effective”*

**Value For Money**4%

*“reasonable price”*

**Advertised Vs Actual Product**2%

*“Works as advertised”*

**Stress/Anxiety**2%

*“It helps me relax”*

**Ingredients-Overall**2%

*“ingredients are safe”*

**Side Effects**1%

*“had no issues”*

### **What buyers complain about **

**Sleep Quality**24%

*“No sleep”*

**Functionality-Overall**11%

*“Doesn't work”*

**Dosage**7%

*“5mg or 10mg or whatever is way too much”*

**Value For Money**5%

*“Expensive”*

**Taste-Overall**5%

*“Strange After Taste And Feel”*

**Ease Of Use**3%

*“And difficult to open”*

**Quality-Overall**3%

*“but overall, its a bad product”*

**Size-Overall**3%

*“too big”*

**Ingredients-Overall**2%

*“Include hazardous and poisonous ingredients not listed on amazon”*

**Side Effects**2%

*“It gave me hives so badly I nearly went to hospital”*

### **Top return reasons **

**Sleep Quality**27%

**Functionality-Overall**18%

**Dosage**18%

**Ease Of Use**18%

**Side Effects**9%

**Ingredients-Overall**9%