calm magnesium kids
Skip itA small market ($13K/yr) — this niche doesn't clear our bar today.
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Avg price
Great$18.38avg listing price — sweet spot $15–$100
Price range
Great$9.69–$35.56cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Good5.9%search→purchase rate — share of searches ending in a sale
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Review moat
Okay1,723.11avg incumbent reviews — the moat a new listing must climb
Brand share
Bad94%top-5 brand share — brand-locked demand
Competition
Bad86%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
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.Peak months: Jan, Aug · busiest ÷ quietest = 1.7×
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.
All 9 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
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$22.634.6★1,715 rev
Natural Vitality Calm Magnesium Powder | Mixed Berry Flavored Supplement
Natural Vitality$35.564.3★1,091 rev
Natural Vitality Kids Calm | Magnesium Glycinate Gummies
Natural Vitality$16.374.3★82 rev
MaryRuths Kids Magnesium Gummies 50mg Magnesium Citrate for Kids 4+ 60ct
MARYRUTH'S$20.444.5★3,210 rev
Vitamatic Kids Magnesium Calm Gummies - 60 Vegan Count - Great Tasting - Promote Healthy Muscle Bone & Energy Support
Vitamatic$9.694.5★657 rev
Newest
by launch dateNatural Vitality Kids Calm | Magnesium Glycinate Gummies
Natural Vitality$16.3782 rev
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$19.36361 rev
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$17.321,844 rev
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$12.49864 rev
MaryRuths Kids Magnesium Gummies 50mg Magnesium Citrate for Kids 4+ 60ct
MARYRUTH'S$20.443,210 rev
Trending
90-day click momentumNatural Vitality Kids Calm | Magnesium Glycinate Gummies
Natural Vitality$16.374.3★
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$19.364.4★
Vitamatic Kids Magnesium Calm Gummies - 60 Vegan Count - Great Tasting - Promote Healthy Muscle Bone & Energy Support
Vitamatic$9.694.5★
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$22.634.6★
MaryRuths Kids Magnesium Gummies 50mg Magnesium Citrate for Kids 4+ 60ct
MARYRUTH'S$20.444.5★
What buyers say about calm magnesium kids
What buyers praise and complain about, mined from review topics.What buyers love
“GREAT SLEEP”
“Good gummies, taste good and work well”
“Great-Tasting Magnesium Gummies the Whole Fa”
“It worked quickly”
“Good staff”
“calming”
“Good flavor”
“Helps anxiety”
“Its a fantastic vitamin”
“Helps with mood”
What buyers complain about
“no improvement of sleep when given at night”
“the dosing is wrong”
“Didnt work”
“Does not contain magnesium glycinate”
“Awful taste”
“Waste of money”
“My kids dont really like the strawberry flavor”
“Smell bad”
“So sour”
“they got anxious again”
Top return reasons
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.