magnesium glycinate
Skip itPrices mostly outside the sweet spot ($3.44–$8.12) — this niche doesn't clear our bar today.
Market size
Incredible£8.8M£8.8M/yr · 8.5M searches
Returns
Incredible0.1%return rate — above 5% kills the launch gate
Conversion
Incredible14.6%search→purchase rate — share of searches ending in a sale
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Review moat
Bad9,561.33avg incumbent reviews — the moat a new listing must climb
Avg price
Bad£7.12avg listing price — sweet spot $15–$100
Growth
Bad-17.8%90-day search growth — must beat 0% to launch
Brand share
Bad95%top-5 brand share — brand-locked demand
Competition
Bad95%top-5 click share — a locked-up shelf
Price range
Bad£3.44–£8.12cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United Kingdom niche tracking, magnesium glycinate is a £8.8M/yr Amazon United Kingdom market (8.5M searches/yr). The top 5 brands hold 95% of demand. Demand peaks in Mar–Apr–May. Verdict: Skip it — 45/100.
Data updated Jul 25, 2026 · scored weekly · How we score niches
magnesium glycinate market data
- Units sold / yr
- 1.0M–1.0M
- avg 125,000–150,000/product
- Revenue / yr
- £7.1M–£7.1M
- units × avg price
- Conversion rate
- 14.6%
- Avg BSR
- #3
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 83%
- Out of stock
- 0.0%
- Avg brand age
- 44 months
- Avg seller age
- 161 days
Competition & brand share
The top 5 products capture 95% of clicks — a locked-up shelf that new listings rarely crack.Brands
6 falling
Sellers
34
Top-5 brand share
95%
Top 20: 100%
Top-5 click share
95%
Top 20: 100%
Open market
0%
- Nutrition Geeks67%
- SS Sport Supplies9%
- Zipvit8%
- Vitabiotics Ultra6%
- NEW LEAF PRODUCTS5%
- Free Soul5%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -17.8% search growth over the last 90 days.Peak months: Mar, Apr, May · busiest ÷ quietest = 3.0×
Top magnesium glycinate search terms
- magnesium glycinate3.6M/yr
- magnesium2.2M/yr
- magnesium glycinate 3-in-1815K/yr
- mag237K/yr
- nutrition geeks magnesium306K/yr
- magnesium supplements542K/yr
- geeks magnesium glycinate 3-in-1196K/yr
- magnesium tablets150K/yr
- magnesium for sleep58K/yr
- nutrition geeks magnesium 3 in 161K/yr
Top magnesium glycinate 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 6 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Magnesium Glycinate 3-in-1 Complex - 1800mg Supplements as Bisglycinate Citrate & Malate 90 Vegan Capsules Triple High Absorption 384mg Elemental UK Made
Nutrition Geeks£8.114.5★35,795 rev
Magnesium Glycinate Supplements 1500mg & Vitamin B6-120 High Strength Capsules - 1500mg of Magnesium Providing 315mg Elemental Magnesium (Bisglycinate) - Pure Active Ingredient
SS Sport Supplies£8.124.5★6,499 rev
Zipvit Magnesium Glycinate 2000mg with 400mg Elemental Plus Vitamin B6 120 Vegan Tablets High Strength Magnesium Supplements
Zipvit£7.914.6★2,240 rev
Magnesium Supplements Tablets
Vitabiotics Ultra£3.444.6★5,535 rev
Magnesium Glycinate Supplements - Pure Active Ingredient - 120 High Strength Vegan Capsules Providing 208mg Elemental Per Serving - UK Manufactured By New Leaf Products 1040mg of Magnesium
NEW LEAF PRODUCTS£7.864.6★4,069 rev
Newest
by launch date
Magnesium Glycinate 4-in-1 Complex | 1283mg Bisglycinate Citrate Malate & 2000mg Turmeric & Black Pepper | 385mg Elemental High Absorption Magnesium Supplements | 90 Tablets | UK Made | Free Soul
Free Soul£7.243,230 rev
Zipvit Magnesium Glycinate 2000mg with 400mg Elemental Plus Vitamin B6 120 Vegan Tablets High Strength Magnesium Supplements
Zipvit£7.912,240 rev
Magnesium Glycinate 3-in-1 Complex - 1800mg Supplements as Bisglycinate Citrate & Malate 90 Vegan Capsules Triple High Absorption 384mg Elemental UK Made
Nutrition Geeks£8.1135,795 rev
Magnesium Glycinate Supplements - Pure Active Ingredient - 120 High Strength Vegan Capsules Providing 208mg Elemental Per Serving - UK Manufactured By New Leaf Products 1040mg of Magnesium
NEW LEAF PRODUCTS£7.864,069 rev
Magnesium Glycinate Supplements 1500mg & Vitamin B6-120 High Strength Capsules - 1500mg of Magnesium Providing 315mg Elemental Magnesium (Bisglycinate) - Pure Active Ingredient
SS Sport Supplies£8.126,499 rev
Trending
90-day click momentumMagnesium Glycinate Supplements - Pure Active Ingredient - 120 High Strength Vegan Capsules Providing 208mg Elemental Per Serving - UK Manufactured By New Leaf Products 1040mg of Magnesium
NEW LEAF PRODUCTS£7.864.6★
Magnesium Supplements Tablets
Vitabiotics Ultra£3.444.6★
Zipvit Magnesium Glycinate 2000mg with 400mg Elemental Plus Vitamin B6 120 Vegan Tablets High Strength Magnesium Supplements
Zipvit£7.914.6★
Magnesium Glycinate 3-in-1 Complex - 1800mg Supplements as Bisglycinate Citrate & Malate 90 Vegan Capsules Triple High Absorption 384mg Elemental UK Made
Nutrition Geeks£8.114.5★
Magnesium Glycinate Supplements 1500mg & Vitamin B6-120 High Strength Capsules - 1500mg of Magnesium Providing 315mg Elemental Magnesium (Bisglycinate) - Pure Active Ingredient
SS Sport Supplies£8.124.5★
What buyers say about magnesium glycinate
What buyers praise and complain about, mined from review topics.What buyers love
“sleep more deeply”
“the quality is always consistent”
“Best magnesium out there”
“Excellent value for money”
“accurate description”
“helps muscle cramps”
“i've found no problem in swallowing them”
“Effective”
“Vitamins, easy to swallow good amount of supply”
“Easy to use”
What buyers complain about
“No sleep”
“Unfortunately this magnesium upset my stomach”
“Didn't do for me”
“The dose is misleading”
“Upsets my stomach”
“Terrible side effects”
“they are huge”
“Not as good as it appears”
“Expensive”
“It's not as described”
Top return reasons
Common questions
- Is magnesium glycinate profitable to sell on Amazon United Kingdom?
- The niche generates £8.8M/yr across 6 tracked products. 90-day search growth is -17.8%. Flapen's verdict: Skip it (45/100).
- How competitive is the magnesium glycinate niche?
- 6 brands and 34 sellers compete. The top 5 products take 95% of clicks and top 5 brands hold 95% of demand.
- What do buyers complain about in magnesium glycinate?
- Top complaints mined from reviews: Sleep Quality, Magnesium, Functionality-Overall. The return rate is 0.1%.
- When does demand for magnesium glycinate peak?
- Demand peaks in Mar–Apr–May; the busiest month runs 3.0× the quietest.
- What does it cost to enter the magnesium glycinate niche?
- Listings span £3.44–£8.12; the average listing price is £7.12 (sweet spot $15–$100). The average incumbent carries 9,561 reviews — the moat a new listing must climb.