magnesium for kids
Skip itSoft demand (-37.4% this quarter) — this niche doesn't clear our bar today.
Returns
Incredible0.1%return rate — above 5% kills the launch gate
Conversion
Great11.8%search→purchase rate — share of searches ending in a sale
Quality gap
Great4.2★avg incumbent rating — lower means beatable quality
Market size
Good£524K£524K/yr · 413K searches
Review moat
Good1,062.6avg incumbent reviews — the moat a new listing must climb
Avg price
Okay£10.74avg listing price — sweet spot $15–$100
Price range
Okay£7.14–£17.58cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Bad93%top-5 brand share — brand-locked demand
Competition
Bad81%top-5 click share — a locked-up shelf
Growth
Bad-37.4%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United Kingdom niche tracking, magnesium for kids is a £524K/yr Amazon United Kingdom market (413K searches/yr). The top 5 brands hold 93% of demand. Demand peaks in Jan–Feb. Verdict: Skip it — 48/100.
Data updated Jul 25, 2026 · scored weekly · How we score niches
magnesium for kids market data
- Units sold / yr
- 40K–50K
- avg 4,000–5,000/product
- Revenue / yr
- £430K–£537K
- units × avg price
- Conversion rate
- 11.8%
- Avg BSR
- #68
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 100%
- Out of stock
- 0.0%
- Avg brand age
- 39 months
- Avg seller age
- 171 days
Competition & brand share
The top 5 products capture 81% of clicks — a locked-up shelf that new listings rarely crack.Brands
7 falling
Sellers
27
Top-5 brand share
93%
Top 20: 100%
Top-5 click share
81%
Top 20: 100%
Open market
3%
- novomins69%
- CHEWY VITES10%
- maxmedix5%
- 8 Hour Sleepwell5%
- Tonic Health5%
- Health4All4%
- Open — no brand owns it (1 brand, 3%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -37.4% search growth over the last 90 days.Peak months: Jan, Feb · busiest ÷ quietest = 1.9×
Top magnesium for kids search terms
- novomins81K/yr
- magnesium for kids77K/yr
- kids magnesium gummies66K/yr
- kids magnesium43K/yr
- magnesium kids37K/yr
- magnesium gummies kids36K/yr
- magnesium kids gummies11K/yr
- magnesium for kids sleep14K/yr
- novomins gummies12K/yr
- magnesium gummies for kids7K/yr
Top magnesium for 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 10 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Kids Magnesium Gummies - 546 Mg Magnesium Citrate Providing 60 mg of Magnesium - Alternative to Magnesium Glycinate 30 Gummies - 1 Month Supply Magnesium Supplements - Vegan - Gluten Free - Novomins
novomins£7.994.4★3,894 rev
Kids Night-Time Gummies - 30 Gummies - Magnesium L-Theanine Vitamin B Complex - Vegan & Gluten-Free - Suitable for Ages 3+ - Novomins
novomins£7.764.2★1,980 rev
Chewy Vites Kids Magnesium 2 Months Supply 60 Kids Vitamins Gummies 500mg Magnesium Citrate Providing 56mg per Gummy Real Fruit Juice Age 3 + Berries Flavour
CHEWY VITES£7.754.6★318 rev
Womens Bio-Balance Gummies for Intimate Flora and Gut Health Advanced Multi-Strain Formulation Vegan Supplement with Calcium & Cranberry Extract - Made by Novomins
novomins£17.584.5★927 rev
Kids Magnesium Gummies - 90 Vegan Gummies - 3 Months Supply - 1 per Day
maxmedix£13.464.3★147 rev
Newest
by launch date
Vinco Magnesium Glycinate Complex Gummies for Adults & Kids - Chelated Bisglycinate with Vitamin B6 C & D3 L-Theanine 5HTP - Time Release - Sugar Free - Strawberry Flavour - 60 Vegan Gummies
Vinco Supplements£7.4274 rev
Tonic Health Kids Magnesium Gummies - 120mg Magnesium Citrate for Children Ashwagandha KSM-66 Lemon Balm - No Sugar Calm and Balanced - Age 3-12 Years Vegan - Raspberry 60 Count
Tonic Health£15.2378 rev
Kids Magnesium Gummies - 90 Vegan Gummies - 3 Months Supply - 1 per Day
maxmedix£13.46147 rev
Kids Magnesium Glycinate Gummies 1 Month Supply | Sugar-Free Vegan & Chewable | 470mg Magnesium for Kids Providing 65mg to Support Calm Mind & Focus for Children Ages 3+ | Strawberry Flavour
8 Hour Sleepwell£8.50301 rev
Chewy Vites Kids Magnesium 2 Months Supply 60 Kids Vitamins Gummies 500mg Magnesium Citrate Providing 56mg per Gummy Real Fruit Juice Age 3 + Berries Flavour
CHEWY VITES£7.75318 rev
Trending
90-day click momentumVinco Magnesium Glycinate Complex Gummies for Adults & Kids - Chelated Bisglycinate with Vitamin B6 C & D3 L-Theanine 5HTP - Time Release - Sugar Free - Strawberry Flavour - 60 Vegan Gummies
Vinco Supplements£7.424.1★
Tonic Health Kids Magnesium Gummies - 120mg Magnesium Citrate for Children Ashwagandha KSM-66 Lemon Balm - No Sugar Calm and Balanced - Age 3-12 Years Vegan - Raspberry 60 Count
Tonic Health£15.233.4★
Kids Magnesium Gummies - 90 Vegan Gummies - 3 Months Supply - 1 per Day
maxmedix£13.464.3★
Kids Magnesium Glycinate Gummies 1 Month Supply | Sugar-Free Vegan & Chewable | 470mg Magnesium for Kids Providing 65mg to Support Calm Mind & Focus for Children Ages 3+ | Strawberry Flavour
8 Hour Sleepwell£8.504.2★
Turn Me On Gummies Women - Maca Root Damiana Fenugreek Zinc Vitamin B6 & Ashwagandha - Gluten-Free & Vegan - 60 Gummies for Women - Novomins
novomins£14.573.8★
What buyers say about magnesium for kids
What buyers praise and complain about, mined from review topics.What buyers love
“helps with sleep”
“Taste great and natural”
“No complaints from the kids”
“Each gummy features a well-balanced combination of 120mg of magnesium”
“Nice flavour”
“They are quite chewy”
“Great vitamins”
“Seems to be what is advertised”
“Taste like sweets”
“Value for Money”
What buyers complain about
“We had no improvement with sleep”
“Hmm strange taste”
“Did not work”
“Not worth the money”
“Didnt have any effect on either of my children with adhd”
“not the best product”
“Slightly low magnesium amount -”
“But after a very painful flare up on my endometriosis I realised that the maca root within this vitamin can cause these symptoms to become worse”
“bloating for over a week”
“Little hard”
Top return reasons
Common questions
- Is magnesium for kids profitable to sell on Amazon United Kingdom?
- The niche generates £524K/yr across 10 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is -37.4%. Flapen's verdict: Skip it (48/100).
- How competitive is the magnesium for kids niche?
- 7 brands and 27 sellers compete. The top 5 products take 81% of clicks and top 5 brands hold 93% of demand.
- What do buyers complain about in magnesium for kids?
- Top complaints mined from reviews: Sleep Quality, Taste-Overall, Functionality-Overall. The return rate is 0.1%.
- When does demand for magnesium for kids peak?
- Demand peaks in Jan–Feb; the busiest month runs 1.9× the quietest.
- What does it cost to enter the magnesium for kids niche?
- Listings span £7.14–£17.58; the average listing price is £10.74 (sweet spot $15–$100). The average incumbent carries 1,063 reviews — the moat a new listing must climb.