---
title: "Calm Magnesium Kids — $13K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/calm-magnesium-kids"
last_updated: "2026-08-06T00:23:11.325Z"
locale: en
meta:
description: "Niche score 37/100 · $13K/yr market · 12K searches/yr · $18.38 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 37/100 · $13K/yr market · 12K searches/yr · $18.38 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Calm Magnesium Kids — $13K/yr Amazon US Niche (2026) - Flapen"
---
# **calm magnesium kids**
**Skip it**
A small market ($13K/yr) — this niche doesn't clear our bar today.
Market size 3Growth 5Conversion 66Competition 12Returns 100Price range 79Avg price 83Brand share 15Review moat 48Quality gap 52
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Avg price**
**Great****$18.38**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$9.69–$35.56**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Good****5.9%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Okay****1,723.11**
avg incumbent reviews — the moat a new listing must climb
**Brand share**
**Bad****94%**
top-5 brand share — brand-locked demand
**Competition**
**Bad****86%**
top-5 click share — a locked-up shelf
**Growth**
**Bad****-39.8%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****$13K**
$13K/yr · 12K searches
According to Flapen's Amazon United States niche tracking, calm magnesium kids is a $13K/yr Amazon United States market (12K searches/yr). The top 5 brands hold 94% of demand. Demand peaks in Jan–Aug. Verdict: Skip it — 37/100.
Data updated Jul 28, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **calm magnesium kids market data**
- **Units sold / yr**
- **750–1K**
- avg 0–100/product
- **Revenue / yr**
- **$14K–$18K**
- units × avg price
- **Conversion rate**
- **5.9%**
- **Avg BSR**
- **#300**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **100%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **38 months**
- **Avg seller age**
- **189 days**
## **Competition & brand share**
The top 5 products capture 86% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**7 **▼falling
**Sellers**
**588**
**Top-5 brand share**
**94%**
Top 20: 100%
**Top-5 click share**
**86%**
Top 20: 100%
**Open market**
**3%**
- Natural Vitality71% - MARYRUTH'S8% - Vitamatic6% - OLLY4% - Zarbee's4% - Renzo's3% - Open — no brand owns it (1 brand, 3%)
## **Demand & seasonality**
Weekly Amazon search volume, last 103 weeks — -39.8% search growth over the last 90 days.
350250Holiday '24Spike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jan, Aug · busiest ÷ quietest = 1.7×
[**Open Trend **](https://flapen.com/research/us/health-household/calm-magnesium-kids/trend)
## **Top calm magnesium kids products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%15%$2K30%$4K45%$6K60%$8K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 9 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Natural Vitality Calm Magnesium Citrate Kids Supplement Stress Relief Gummies Supports a Healthy Response to Stress Gluten Free Vegan Sweet Citrus 120 Gummies**Natural Vitality**$22.63**4.6★1,715 rev](https://www.amazon.com/dp/B09F823K6R) [2**Natural Vitality Calm Magnesium Powder | Mixed Berry Flavored Supplement**Natural Vitality**$35.56**4.3★1,091 rev](https://www.amazon.com/dp/B071YWHLVR) [3**Natural Vitality Kids Calm | Magnesium Glycinate Gummies**Natural Vitality**$16.37**4.3★82 rev](https://www.amazon.com/dp/B0G4SG2RR9) [4**MaryRuths Kids Magnesium Gummies 50mg Magnesium Citrate for Kids 4+ 60ct**MARYRUTH'S**$20.44**4.5★3,210 rev](https://www.amazon.com/dp/B0B1KJ6SGS) [5**Vitamatic Kids Magnesium Calm Gummies - 60 Vegan Count - Great Tasting - Promote Healthy Muscle Bone & Energy Support**Vitamatic**$9.69**4.5★657 rev](https://www.amazon.com/dp/B0BRMTN7NN)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Natural Vitality Kids Calm | Magnesium Glycinate Gummies**Natural Vitality**$16.37**82 rev7mo ago](https://www.amazon.com/dp/B0G4SG2RR9) [**Renzos Captain Calm Kids Magnesium Supplement with L-Theanine Dissolvable Kids Vitamins for Relaxation and Mood Support Sugar-Free Melty Tabs Green Apple Flavor 60-Count (1-2 Month Supply)**Renzo's**$19.36**361 rev1y ago](https://www.amazon.com/dp/B0DK9WCBJY) [**Kids Magnesium Liquid Drops-Magnesium Glycinate Liquid for Kids Supplement-w/L-theanine Omega-3 Vitamin B6 D3 - for Sleep Relaxation Brain Bones - 2 Fl Oz Childrens Calm Strawberry Flavor**CFILIHTC**$17.32**1,844 rev1y ago](https://www.amazon.com/dp/B0DFYLM2T8) [**Zarbees Kids Calm Gummies with Magnesium for Kids Ages 5+ Melatonin-Free Support for a Calm Mind & Body Chamomile & Vitamin B6 Natural Raspberry Flavor 30 ct**Zarbee's**$12.49**864 rev2y ago](https://www.amazon.com/dp/B0CKM1DXHS) [**MaryRuths Kids Magnesium Gummies 50mg Magnesium Citrate for Kids 4+ 60ct**MARYRUTH'S**$20.44**3,210 rev4y ago](https://www.amazon.com/dp/B0B1KJ6SGS)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Natural Vitality Kids Calm | Magnesium Glycinate Gummies**Natural Vitality**$16.37**4.3★**▲ 232%**](https://www.amazon.com/dp/B0G4SG2RR9) [**Renzos Captain Calm Kids Magnesium Supplement with L-Theanine Dissolvable Kids Vitamins for Relaxation and Mood Support Sugar-Free Melty Tabs Green Apple Flavor 60-Count (1-2 Month Supply)**Renzo's**$19.36**4.4★**▲ 25%**](https://www.amazon.com/dp/B0DK9WCBJY) [**Vitamatic Kids Magnesium Calm Gummies - 60 Vegan Count - Great Tasting - Promote Healthy Muscle Bone & Energy Support**Vitamatic**$9.69**4.5★**▲ 14%**](https://www.amazon.com/dp/B0BRMTN7NN) [**Natural Vitality Calm Magnesium Citrate Kids Supplement Stress Relief Gummies Supports a Healthy Response to Stress Gluten Free Vegan Sweet Citrus 120 Gummies**Natural Vitality**$22.63**4.6★**— 3%**](https://www.amazon.com/dp/B09F823K6R) [**MaryRuths Kids Magnesium Gummies 50mg Magnesium Citrate for Kids 4+ 60ct**MARYRUTH'S**$20.44**4.5★**— 7%**](https://www.amazon.com/dp/B0B1KJ6SGS)
**~~View all trending →~~**
## **What buyers say about calm magnesium kids**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Sleep Quality**30%
*“GREAT SLEEP”*
**Taste-Overall**16%
*“Good gummies, taste good and work well”*
**Magnesium**6%
*“Great-Tasting Magnesium Gummies the Whole Fa”*
**Efficiency**5%
*“It worked quickly”*
**Quality-Overall**5%
*“Good staff”*
**Soothing Effect**4%
*“calming”*
**Flavor**3%
*“Good flavor”*
**Stress/Anxiety**3%
*“Helps anxiety”*
**Vitamin**2%
*“Its a fantastic vitamin”*
**Focus Enhancement**2%
*“Helps with mood”*
### **What buyers complain about **
**Sleep Quality**24%
*“no improvement of sleep when given at night”*
**Dosage**8%
*“the dosing is wrong”*
**Functionality-Overall**7%
*“Didnt work”*
**Magnesium**5%
*“Does not contain magnesium glycinate”*
**Taste-Overall**5%
*“Awful taste”*
**Value For Money**3%
*“Waste of money”*
**Flavor**3%
*“My kids dont really like the strawberry flavor”*
**Smell**3%
*“Smell bad”*
**Sour**3%
*“So sour”*
**Stress/Anxiety**2%
*“they got anxious again”*
### **Top return reasons **
**Age Suitability**18%
**Value For Money**18%
**Magnesium**9%
**Joint Pain**9%
**Acid Regulator/Stomach Ache Relief**9%
**Functionality-Overall**9%
**Flavor**9%
**Taste-Overall**9%
**Vitamin**5%
**Adhesion/Stickiness**5%
## **Common questions**
- **Is calm magnesium kids profitable to sell on Amazon United States?**
- The niche generates $13K/yr across 9 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -39.8%. Flapen's verdict: Skip it (37/100).
- **How competitive is the calm magnesium kids niche?**
- 7 brands and 588 sellers compete. The top 5 products take 86% of clicks and top 5 brands hold 94% of demand.
- **What do buyers complain about in calm magnesium kids?**
- Top complaints mined from reviews: Sleep Quality, Dosage, Functionality-Overall. The return rate is 0.0%.
- **When does demand for calm magnesium kids peak?**
- Demand peaks in Jan–Aug; the busiest month runs 1.7× the quietest.
- **What does it cost to enter the calm magnesium kids niche?**
- Listings span $9.69–$35.56; the average listing price is $18.38 (sweet spot $15–$100). The average incumbent carries 1,723 reviews — the moat a new listing must climb.
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