Magnesium for Kids
Worth a lookShows 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
Market size
Incredible$3.4M$3.4M/yr · 2.2M searches
Avg price
Great$21.54avg listing price — sweet spot $15–$100
Price range
Great$9.69–$36.83cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Great57%top-5 brand share — no brand owns this niche
Conversion
Great7.4%search→purchase rate — share of searches ending in a sale
Competition
Good44%top-5 click share — leaders hold, buyers still browse
Review moat
Good1,209.8avg incumbent reviews — the moat a new listing must climb
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Growth
Bad-16.3%90-day search growth — must beat 0% to launch
Is magnesium for kids profitable on Amazon?
According to Flapen's Amazon United States niche tracking, magnesium for kids is a $3.4M/yr Amazon United States market (2.2M searches/yr). The top 5 brands hold 57% of demand. Verdict: Worth a look — 68/100.
Data updated Jul 28, 2026 · scored weekly · How we score niches
magnesium for kids market size & sales
Units sold, revenue, conversion and listing quality across the tracked shelf.- Units sold / yr
- 125K–150K
- avg 3,000–4,000/product
- Revenue / yr
- $2.7M–$3.2M
- units × avg price
- Conversion rate
- 7.4%
- Avg BSR
- #296
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 100%
- Out of stock
- 1.2%
- Avg brand age
- 45 months
- Avg seller age
- 150 days
Competition: brands, sellers & click share
The top 5 products take 44% of clicks — established leaders, but buyers still shop beyond them.Brands
25 flat
Sellers
619
Top-5 brand share
57%
Top 20: 95%
Top-5 click share
44%
Top 20: 83%
Open market
37%
- NEVISS19%
- MARYRUTH'S15%
- CFILIHTC9%
- Hovika7%
- Natural Vitality7%
- ReviNutra6%
magnesium for kids demand & seasonality
Weekly Amazon search volume, last 104 weeks — -16.3% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.5×
Top magnesium for kids search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.- magnesium for kids391K/yr
- kids magnesium286K/yr
- magnesium glycinate for kids213K/yr
- kids magnesium gummies152K/yr
- kids magnesium glycinate115K/yr
- magnesium gummies for kids125K/yr
- magnesium glycinate kids114K/yr
- magnesium kids104K/yr
- mary ruth magnesium105K/yr
- magnesio para nios64K/yr
Top magnesium for kids 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.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Magnesium Glycinate Gummies for Adults & Kids 4+ Sugar Free Magnesium Bisglycinate Supplement 400/200mg with B6D3 L-Theanine for Sleep & Relaxation Brain Muscle Melatonin Free Gummies 1Pack
NEVISS$20.024.5★1,360 rev
MaryRuths Kids Magnesium Gummies 50mg Magnesium Citrate for Kids 4+ 60ct
MARYRUTH'S$20.444.5★3,210 rev
Magnesium Glycinate Liquid for Kids - with L-Theanine Omega-3 Vitamin B6 D3 Zinc - Kids Magnesium Drops for Sleep Relaxation Calm & Focus - 2 Fl Oz Strawberry Flavor
Hovika$17.584.6★924 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$17.324.6★1,844 rev
DR. MORITZ Sugar-Free Calm Magnesium Gummies for Kids and Adults - Non-GMO Magnesium Citrate Gummies - Raspberry Flavor - 2-Pack (60 Count)
DR. MORITZ$24.954.5★5,813 rev
Newest
by launch date
Natural Vitality Kids Calm | Magnesium Glycinate Gummies
Natural Vitality$16.3782 rev
Magnesium Glycinate Gummies 400/200mg for Kids & Adults NO Melatonin Sleep Aid Magnesium Supplement Gummies with Chamomile Lavender L-Theanine & GABA B6 D3 & K2 for Bone Relax Immune Support
GORNVB$18.61114 rev
Kids Sleep Gummies - Magnesium Glycinate Gummies Melatonin Free Sleep Aid
LILICARE$19.97493 rev
Kids Magnesium Liquid Drops-Magnesium Glycinate Liquid for Kids Supplement-w/L-theanine Omega-3 Vitamin B6 D3 - for Sleep Relaxation Brain Bones - 4 Fl Oz Childrens Calm
CFILIHTC$26.781,844 rev
Liquid Magnesium Supplement by MaryRuths | Magnesium Complex with Magnesium Glycerophosphate + Magnesium Bisglycinate + Taurate + Malate | Ages 4+ | Cognitive Function | Bone Health | Vegan | 30oz
MARYRUTH'S$33.60298 rev
Trending
90-day click momentumNatural Vitality Kids Calm | Magnesium Glycinate Gummies
Natural Vitality$16.374.3★
Magnesium Glycinate Gummies 400/200mg for Kids & Adults NO Melatonin Sleep Aid Magnesium Supplement Gummies with Chamomile Lavender L-Theanine & GABA B6 D3 & K2 for Bone Relax Immune Support
GORNVB$18.614.4★
Magnesium Gummies for Kids - Magnesium Glycinate Gummies Supplement with L-Theanine Vitamin B6 D3 for Kids & Adults Sleep Calm Relaxation Brain Bones Sugar Free Strawberry 60ct
ReviNutra$16.184.6★
MaryRuths Kids Magnesium Gummies 50mg Magnesium Citrate for Kids 4+ 60ct
MARYRUTH'S$20.444.5★
Kids Magnesium Liquid Drops-Magnesium Glycinate Liquid for Kids Supplement-w/L-theanine Omega-3 Vitamin B6 D3 - for Sleep Relaxation Brain Bones - 4 Fl Oz Childrens Calm
CFILIHTC$26.784.6★
What reviews say buyers love and hate about magnesium for kids
What buyers praise and complain about, mined from review topics.What buyers love
“Helps with sleep”
“It tastes pretty good too”
“Excellent product”
“The best magnesium gummies”
“Works well”
“The flavor is unique”
“Helps calm and relax”
“they are feeling relaxed”
“its just natural vitamins that benefit them in general”
“Good value”
What buyers complain about
“has a hard time going to sleep”
“Did not work”
“Taste is nasty”
“These contain no magnesium”
“Dosage too high, not safe”
“Not worth it”
“Unsafe ingredients”
“My kids dont really like the strawberry flavor”
“Made my kids sick”
“Chemical smell/taste”
Top return reasons
Common magnesium for kids questions
- Is magnesium for kids profitable to sell on Amazon United States?
- The niche generates $3.4M/yr across 35 tracked products. 5 of 5 products launched in the last 360 days are still selling. 90-day search growth is -16.3%. Flapen's verdict: Worth a look (68/100).
- How competitive is the magnesium for kids niche?
- 25 brands and 619 sellers compete. The top 5 products take 44% of clicks and top 5 brands hold 57% of demand.
- What do buyers complain about in magnesium for kids?
- Top complaints mined from reviews: Sleep Quality, Functionality-Overall, Taste-Overall. The return rate is 0.0%.
- When does demand for magnesium for kids peak?
- Demand is steady year-round — the busiest month runs 1.5× the quietest.
- What does it cost to enter the magnesium for kids niche?
- Listings span $9.69–$36.83; the average listing price is $21.54 (sweet spot $15–$100). The average incumbent carries 1,210 reviews — the moat a new listing must climb.