---
title: "Magnesium Complex — £514K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/health-personal-care/magnesium-complex"
last_updated: "2026-07-31T21:57:18.230Z"
locale: en
meta:
description: "Niche score 54/100 · £514K/yr market · 459K searches/yr · £11.55 avg price. Soft demand (-7.3% this quarter) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 54/100 · £514K/yr market · 459K searches/yr · £11.55 avg price. Soft demand (-7.3% this quarter) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Magnesium Complex — £514K/yr Amazon UK Niche (2026) - Flapen"
---
# **magnesium complex**
**Worth a look**
Shows low returns (0.1%), but soft demand (-7.3% this quarter) keeps it on the watch list.
Market size 60Growth 21Conversion 86Competition 45Returns 100Price range 63Avg price 46Brand share 62Review moat 29Quality gap 38
**Returns**
**Incredible****0.1%**
return rate — above 5% kills the launch gate
**Conversion**
**Great****9.7%**
search→purchase rate — share of searches ending in a sale
**Price range**
**Good****£6.78–£28.86**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Good****68%**
top-5 brand share — brands hold most of the demand
**Market size**
**Good****£514K**
£514K/yr · 459K searches
**Avg price**
**Okay****£11.55**
avg listing price — sweet spot $15–$100
**Competition**
**Okay****58%**
top-5 click share — leaders hold, buyers still browse
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Okay****3,629.22**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Bad****-7.3%**
90-day search growth — must beat 0% to launch
**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=uk&signal=no_dominant_brand "Top brand's click share < 20%")
According to Flapen's Amazon United Kingdom niche tracking, magnesium complex is a £514K/yr Amazon United Kingdom market (459K searches/yr). The top 5 brands hold 68% of demand. Demand peaks in Aug–Sep. Verdict: Worth a look — 54/100.
Data updated Jul 25, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **magnesium complex market data**
- **Units sold / yr**
- **40K–50K**
- avg 3,000–4,000/product
- **Revenue / yr**
- **£462K–£578K**
- units × avg price
- **Conversion rate**
- **9.7%**
- **Avg BSR**
- **#154**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **94%**
- **Out of stock**
- **3.1%**
- **Avg brand age**
- **38 months**
- **Avg seller age**
- **172 days**
## **Competition & brand share**
The top 5 products take 58% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**15 **▼falling
**Sellers**
**18**
**Top-5 brand share**
**68%**
Top 20: 100%
**Top-5 click share**
**58%**
Top 20: 100%
**Open market**
**24%**
- NEW LEAF PRODUCTS19% - HealthEssent18% - PH PROWISE Healthcare12% - Nutrition Geeks10% - Free Soul9% - WeightWorld9%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -7.3% search growth over the last 90 days.
60K40KSpike '24Spike '25Prime Day '25Spike '26Prime Day '26 seasonSepDecMarJunAugNovMarMay
Peak months: Aug, Sep · busiest ÷ quietest = 8.0×
[**Open Trend **](https://flapen.com/research/uk/health-personal-care/magnesium-complex/trend)
## **Top magnesium complex search terms**
- **magnesium complex**275K/yr-0.9%7.7% conv. - **magnesium complex 12 in 1**23K/yr+55.4%4.0% conv. - **magnesium 4 in 1**18K/yr-2.0%14.4% conv. - **new leaf magnesium glycinate**15K/yr-18.6%15.9% conv. - **new leaf products**18K/yr-15.8%1.0% conv. - **free soul magnesium 4-in-1**19K/yr-32.5%18.7% conv. - **new leaf**10K/yr-28.2%0.8% conv. - **magnesium orotate**9K/yr+7.9%0.7% conv. - **prowise advanced 4 in 1 magnesium complex**2K/yr+72.1%18.9% conv. - **magnesium complex 4 in 1**11K/yr-27.2%9.5% conv. [**All search terms **](https://flapen.com/research/uk/health-personal-care/magnesium-complex/search-terms)
## **Top magnesium complex 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%5%£26K10%£51K15%£77K20%£103K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 18 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Magnesium 6-in-1 Complex 2325mg with Magnesium Glycinate Citrate Malate Oxide Taurate and Orotate - Muscle Nerve & Energy Support - High Absorption 390mg Elemental - 120 Capsules by HealthEssent**HealthEssent**£8.28**4.6★1,067 rev](https://www.amazon.co.uk/dp/B0DLH2Y113) [2**Magnesium Glycinate Complex 4 in 1-1866mg per Serving | Precise 404mg Elemental Magnesium dose | Added Magnesium Glycinate Citrate Malate & Taurate | 90 Vegan Capsules - by Prowise**PH PROWISE Healthcare**£7.68**4.3★2,606 rev](https://www.amazon.co.uk/dp/B0D83Z2NZ9) [3**Magnesium Glycinate 4-in-1 Complex 1836mg 381mg Elemental Per Serving High-Strength Magnesium with Bisglycinate Citrate Malate Oxide 120 Vegan Capsules UK Manufactured by New Leaf**NEW LEAF PRODUCTS**£10.94**4.6★4,528 rev](https://www.amazon.co.uk/dp/B0CKTST7Q1) [4**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) [5**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**4.4★3,230 rev](https://www.amazon.co.uk/dp/B0DWT5VLKD)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Magnesium Complex 12-in-1 700mg per Serving with Glycinate Citrate Malate Oxide Taurate Aspartate Orotate - High Absorption - Sleep Muscle Support Energy Nerve & Heart Health - 90 Capsules**Bound Nutrition**£15.17**18 rev4mo ago](https://www.amazon.co.uk/dp/B0GSW9P5J2) [**OMNIA High Strength Magnesium Complex 8-in-1 Magnesium Glycinate Citrate Malate & Oxide with L-Theanine Vitamin D3 B6 & Black Pepper -120 Vegan Capsules**OMNIA**£7.66**94 rev7mo ago](https://www.amazon.co.uk/dp/B0G5XPKZW8) [**4-in-1 Magnesium Glycinate Added with KSM-66 Ashwagandha Turmeric and Vitamin B6 | 90 Vegan Capsules | 4 001 mg per Serving | Easy to Swallow Capsule | GMO & Gluten Free | Premium Quality by Prowise**PH PROWISE Healthcare**£7.97**147 rev9mo ago](https://www.amazon.co.uk/dp/B0FWDGKFNT) [**Magnesium Complex 400mg - 5 Forms of Magnesium (Bisglycinate Citrate Oxide Carbonate Liposomal) + Vitamin B6 - High Absorption - Energy Muscles Fatigue Nervous System - 180 Capsules vitavea**Vitavea**£10.39**66 rev10mo ago](https://www.amazon.co.uk/dp/B0FR51B76N) [**Magnesium Glycinate Supplements Magnesium glycinate 25-in-1 Supplement with Glycinate Citrate Malate Oxide Taurate Aspartate Orotate Magnesium Relaxation Muscle Heart Support 120 Capsules**AuranC-H**£20.00**33 rev10mo ago](https://www.amazon.co.uk/dp/B0FQJ1Y3JY)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Magnesium Complex 12-in-1 700mg per Serving with Glycinate Citrate Malate Oxide Taurate Aspartate Orotate - High Absorption - Sleep Muscle Support Energy Nerve & Heart Health - 90 Capsules**Bound Nutrition**£15.17**4.8★**▲ 409%**](https://www.amazon.co.uk/dp/B0GSW9P5J2) [![Magnesium Complex High Dose 400 mg - [300 x Capsules - 9 Magnesium Compounds] - Magnesium High Dose Capsules - Magnesium Complex Vitamin B - Magnesium Oxide Magnesium Bisglycinate](https://m.media-amazon.com/images/I/41gMK5uzM1L.jpg)**Magnesium Complex High Dose 400 mg - \[300 x Capsules - 9 Magnesium Compounds\] - Magnesium High Dose Capsules - Magnesium Complex Vitamin B - Magnesium Oxide Magnesium Bisglycinate**CDF Sports & Health Solutions**£12.65**4.6★**▲ 402%**](https://www.amazon.co.uk/dp/B0DPQSP6HJ) [**OMNIA High Strength Magnesium Complex 8-in-1 Magnesium Glycinate Citrate Malate & Oxide with L-Theanine Vitamin D3 B6 & Black Pepper -120 Vegan Capsules**OMNIA**£7.66**4.4★**▲ 169%**](https://www.amazon.co.uk/dp/B0G5XPKZW8) [**Magnesium Glycinate Supplements Magnesium glycinate 25-in-1 Supplement with Glycinate Citrate Malate Oxide Taurate Aspartate Orotate Magnesium Relaxation Muscle Heart Support 120 Capsules**AuranC-H**£20.00**4.5★**▲ 93%**](https://www.amazon.co.uk/dp/B0FQJ1Y3JY) [**Magnesium Complex 400mg - 5 Forms of Magnesium (Bisglycinate Citrate Oxide Carbonate Liposomal) + Vitamin B6 - High Absorption - Energy Muscles Fatigue Nervous System - 180 Capsules vitavea**Vitavea**£10.39**4.4★**▲ 91%**](https://www.amazon.co.uk/dp/B0FR51B76N)
**~~View all trending →~~**
## **What buyers say about magnesium complex**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Sleep Quality**25%
*“sleep more deeply”*
**Quality-Overall**16%
*“Good quality tablets”*
**Magnesium**11%
*“best magnesium”*
**Value For Money**10%
*“EXCELLENT VALUE FOR MONEY”*
**Advertised Vs Actual Product**5%
*“accurate description”*
**Muscle Pain Relief**4%
*“whilst this helps with stiff muscles”*
**Vitamin**3%
*“Fantastic vitamins”*
**Efficiency**3%
*“Keeps on working”*
**Ease Of Chewing/Swallowing**3%
*“Easy to chew and tasty”*
**Ease Of Use**2%
*“Ease of Use”*
### **What buyers complain about **
**Sleep Quality**13%
*“Not helping with sleep at all”*
**Magnesium**9%
*“This magnesium does not work”*
**Functionality-Overall**6%
*“It does absolutely nothing”*
**Size-Overall**6%
*“they are rather large tablets”*
**Dosage**6%
*“The dosage is far too high”*
**Ease Of Chewing/Swallowing**5%
*“painful to swallow”*
**Acid Regulator/Stomach Ache Relief**5%
*“Gives you stomach cramps”*
**Side Effects**4%
*“only negative effects”*
**Value For Money**3%
*“Too expensive”*
**Taste-Overall**2%
*“Strange taste”*
### **Top return reasons **
**Joint Pain**50%
**Magnesium**50%
## **Common questions**
- **Is magnesium complex profitable to sell on Amazon United Kingdom?**
- The niche generates £514K/yr across 18 tracked products. 4 of 5 products launched in the last 360 days are still selling. 90-day search growth is -7.3%. Flapen's verdict: Worth a look (54/100).
- **How competitive is the magnesium complex niche?**
- 15 brands and 18 sellers compete. The top 5 products take 58% of clicks and top 5 brands hold 68% of demand.
- **What do buyers complain about in magnesium complex?**
- Top complaints mined from reviews: Sleep Quality, Magnesium, Functionality-Overall. The return rate is 0.1%.
- **When does demand for magnesium complex peak?**
- Demand peaks in Aug–Sep; the busiest month runs 8.0× the quietest.
- **What does it cost to enter the magnesium complex niche?**
- Listings span £6.78–£28.86; the average listing price is £11.55 (sweet spot $15–$100). The average incumbent carries 3,629 reviews — the moat a new listing must climb.
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