---
title: "Magnesium Glycinate — £8.8M/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/health-personal-care/magnesium-glycinate"
last_updated: "2026-07-31T20:23:16.497Z"
locale: en
meta:
description: "Niche score 45/100 · £8.8M/yr market · 8.5M searches/yr · £7.12 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 45/100 · £8.8M/yr market · 8.5M searches/yr · £7.12 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Magnesium Glycinate — £8.8M/yr Amazon UK Niche (2026) - Flapen"
---
# **magnesium glycinate**
**Skip it**
Prices mostly outside the sweet spot ($3.44–$8.12) — this niche doesn't clear our bar today.
Market size 100Growth 16Conversion 97Competition 4Returns 100Price range 0Avg price 20Brand share 11Review moat 22Quality gap 37
**Market size**
**Incredible****£8.8M**
£8.8M/yr · 8.5M searches
**Returns**
**Incredible****0.1%**
return rate — above 5% kills the launch gate
**Conversion**
**Incredible****14.6%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Bad****9,561.33**
avg incumbent reviews — the moat a new listing must climb
**Avg price**
**Bad****£7.12**
avg listing price — sweet spot $15–$100
**Growth**
**Bad****-17.8%**
90-day search growth — must beat 0% to launch
**Brand share**
**Bad****95%**
top-5 brand share — brand-locked demand
**Competition**
**Bad****95%**
top-5 click share — a locked-up shelf
**Price range**
**Bad****£3.44–£8.12**
cheapest 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 ~~](https://flapen.com/research/methodology)
## **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.
225K175KSpike '24Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Mar, Apr, May · busiest ÷ quietest = 3.0×
[**Open Trend **](https://flapen.com/research/uk/health-personal-care/magnesium-glycinate/trend)
## **Top magnesium glycinate search terms**
- **magnesium glycinate**3.6M/yr-7.7%10.1% conv. - **magnesium**2.2M/yr-24.6%6.2% conv. - **magnesium glycinate 3-in-1**815K/yr-25.6%11.8% conv. - **mag**237K/yr+43.7%0.1% conv. - **nutrition geeks magnesium**306K/yr-32.9%21.7% conv. - **magnesium supplements**542K/yr-48.8%4.8% conv. - **geeks magnesium glycinate 3-in-1**196K/yr-26.8%21.9% conv. - **magnesium tablets**150K/yr-25.9%5.5% conv. - **magnesium for sleep**58K/yr-44.1%4.2% conv. - **nutrition geeks magnesium 3 in 1**61K/yr-24.8%21.9% conv. [**All search terms **](https://flapen.com/research/uk/health-personal-care/magnesium-glycinate/search-terms)
## **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.
0%20%£1.8M40%£3.5M60%£5.3M80%£7.1M1K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 6 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Magnesium Glycinate 3-in-1 Complex - 1800mg Supplements as Bisglycinate Citrate & Malate 90 Vegan Capsules Triple High Absorption 384mg Elemental UK Made**Nutrition Geeks**£8.11**4.5★35,795 rev](https://www.amazon.co.uk/dp/B0C9VVCL12) [2**Magnesium Glycinate Supplements 1500mg & Vitamin B6-120 High Strength Capsules - 1500mg of Magnesium Providing 315mg Elemental Magnesium (Bisglycinate) - Pure Active Ingredient**SS Sport Supplies**£8.12**4.5★6,499 rev](https://www.amazon.co.uk/dp/B0BR5X8FDF) [3**Zipvit Magnesium Glycinate 2000mg with 400mg Elemental Plus Vitamin B6 120 Vegan Tablets High Strength Magnesium Supplements**Zipvit**£7.91**4.6★2,240 rev](https://www.amazon.co.uk/dp/B0CCSPDBWC) [4**Magnesium Supplements Tablets**Vitabiotics Ultra**£3.44**4.6★5,535 rev](https://www.amazon.co.uk/dp/B00LNDGDDG) [5**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**£7.86**4.6★4,069 rev](https://www.amazon.co.uk/dp/B0C3JVMT7S)
**~~View all top sellers →~~**
### **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**£7.24**3,230 rev1y ago](https://www.amazon.co.uk/dp/B0DWT5VLKD) [**Zipvit Magnesium Glycinate 2000mg with 400mg Elemental Plus Vitamin B6 120 Vegan Tablets High Strength Magnesium Supplements**Zipvit**£7.91**2,240 rev2y ago](https://www.amazon.co.uk/dp/B0CCSPDBWC) [**Magnesium Glycinate 3-in-1 Complex - 1800mg Supplements as Bisglycinate Citrate & Malate 90 Vegan Capsules Triple High Absorption 384mg Elemental UK Made**Nutrition Geeks**£8.11**35,795 rev3y ago](https://www.amazon.co.uk/dp/B0C9VVCL12) [**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**£7.86**4,069 rev3y ago](https://www.amazon.co.uk/dp/B0C3JVMT7S) [**Magnesium Glycinate Supplements 1500mg & Vitamin B6-120 High Strength Capsules - 1500mg of Magnesium Providing 315mg Elemental Magnesium (Bisglycinate) - Pure Active Ingredient**SS Sport Supplies**£8.12**6,499 rev3y ago](https://www.amazon.co.uk/dp/B0BR5X8FDF)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**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**£7.86**4.6★**▲ 36%**](https://www.amazon.co.uk/dp/B0C3JVMT7S) [**Magnesium Supplements Tablets**Vitabiotics Ultra**£3.44**4.6★**▲ 27%**](https://www.amazon.co.uk/dp/B00LNDGDDG) [**Zipvit Magnesium Glycinate 2000mg with 400mg Elemental Plus Vitamin B6 120 Vegan Tablets High Strength Magnesium Supplements**Zipvit**£7.91**4.6★**▲ 26%**](https://www.amazon.co.uk/dp/B0CCSPDBWC) [**Magnesium Glycinate 3-in-1 Complex - 1800mg Supplements as Bisglycinate Citrate & Malate 90 Vegan Capsules Triple High Absorption 384mg Elemental UK Made**Nutrition Geeks**£8.11**4.5★**— 0%**](https://www.amazon.co.uk/dp/B0C9VVCL12) [**Magnesium Glycinate Supplements 1500mg & Vitamin B6-120 High Strength Capsules - 1500mg of Magnesium Providing 315mg Elemental Magnesium (Bisglycinate) - Pure Active Ingredient**SS Sport Supplies**£8.12**4.5★**▼ 10%**](https://www.amazon.co.uk/dp/B0BR5X8FDF)
**~~View all trending →~~**
## **What buyers say about magnesium glycinate**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Sleep Quality**27%
*“sleep more deeply”*
**Quality-Overall**14%
*“the quality is always consistent”*
**Magnesium**10%
*“Best magnesium out there”*
**Value For Money**10%
*“Excellent value for money”*
**Advertised Vs Actual Product**6%
*“accurate description”*
**Muscle Pain Relief**3%
*“helps muscle cramps”*
**Ease Of Chewing/Swallowing**3%
*“i've found no problem in swallowing them”*
**Efficiency**3%
*“Effective”*
**Vitamin**3%
*“Vitamins, easy to swallow good amount of supply”*
**Ease Of Use**2%
*“Easy to use”*
### **What buyers complain about **
**Sleep Quality**16%
*“No sleep”*
**Magnesium**9%
*“Unfortunately this magnesium upset my stomach”*
**Functionality-Overall**7%
*“Didn't do for me”*
**Dosage**6%
*“The dose is misleading”*
**Acid Regulator/Stomach Ache Relief**6%
*“Upsets my stomach”*
**Side Effects**5%
*“Terrible side effects”*
**Size-Overall**5%
*“they are huge”*
**Quality-Overall**3%
*“Not as good as it appears”*
**Value For Money**3%
*“Expensive”*
**Advertised Vs Actual Product**2%
*“It's not as described”*
### **Top return reasons **
**Joint Pain**50%
**Magnesium**50%
## **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.
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