---
title: "Magnesium Glycinate 200mg — £63K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/health-personal-care/magnesium-glycinate-200mg"
last_updated: "2026-07-31T20:50:30.337Z"
locale: en
meta:
description: "Niche score 39/100 · £63K/yr market · 65K searches/yr · £9.84 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 39/100 · £63K/yr market · 65K searches/yr · £9.84 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Magnesium Glycinate 200mg — £63K/yr Amazon UK Niche (2026) - Flapen"
---
# **magnesium glycinate 200mg**
**Skip it**
Soft demand (-41.6% this quarter) — this niche doesn't clear our bar today.
Market size 16Growth 4Conversion 87Competition 31Returns 100Price range 13Avg price 32Brand share 50Review moat 29Quality gap 40
**Returns**
**Incredible****0.1%**
return rate — above 5% kills the launch gate
**Conversion**
**Great****10.0%**
search→purchase rate — share of searches ending in a sale
**Brand share**
**Good****75%**
top-5 brand share — brands hold most of the demand
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Avg price**
**Okay****£9.84**
avg listing price — sweet spot $15–$100
**Competition**
**Okay****66%**
top-5 click share — leaders hold, buyers still browse
**Review moat**
**Okay****3,628.7**
avg incumbent reviews — the moat a new listing must climb
**Market size**
**Bad****£63K**
£63K/yr · 65K searches
**Price range**
**Bad****£3.44–£16.79**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Growth**
**Bad****-41.6%**
90-day search growth — must beat 0% to launch
According to Flapen's Amazon United Kingdom niche tracking, magnesium glycinate 200mg is a £63K/yr Amazon United Kingdom market (65K searches/yr). The top 5 brands hold 75% of demand. Verdict: Skip it — 39/100.
Data updated Jul 25, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **magnesium glycinate 200mg market data**
- **Units sold / yr**
- **6K–8K**
- avg 100–250/product
- **Revenue / yr**
- **£59K–£79K**
- units × avg price
- **Conversion rate**
- **10.0%**
- **Avg BSR**
- **#106**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **96%**
- **Out of stock**
- **4.3%**
- **Avg brand age**
- **39 months**
- **Avg seller age**
- **175 days**
## **Competition & brand share**
The top 5 products take 66% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**18 **▼falling
**Sellers**
**52**
**Top-5 brand share**
**75%**
Top 20: 100%
**Top-5 click share**
**66%**
Top 20: 97%
**Open market**
**22%**
- Nutravita30% - iperk20% - Health Thru Nutrition13% - Nutrition Geeks8% - My Supplement Farm3% - WeightWorld3%
## **Demand**
Weekly Amazon search volume, last 46 weeks — -41.6% search growth over the last 90 days.
3K2KHoliday '25Spike '26Sep '25Oct '25Dec '25Feb '26Mar '26May '26Jun '26
[**Open Trend **](https://flapen.com/research/uk/health-personal-care/magnesium-glycinate-200mg/trend)
## **Top magnesium glycinate 200mg search terms**
- **magnesium glycinate 200mg**31K/yr-50.2%9.1% conv. - **magnesium glycinate 300mg**15K/yr-37.3%9.0% conv. - **nutravita magnesium glycinate**5K/yr+47.0%9.5% conv. - **magnesium glycinate 250mg**4K/yr+12.6%5.3% conv. - **magnesium 300mg**6K/yr-45.0%8.7% conv. - **nutravita magnesium**5K/yr-64.9%10.4% conv. [**All search terms **](https://flapen.com/research/uk/health-personal-care/magnesium-glycinate-200mg/search-terms)
## **Top magnesium glycinate 200mg 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%10%£6K20%£13K30%£19K40%£25K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 23 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Nutravita Magnesium Glycinate - 120 Vegan Capsules - 200mg Elemental Mag 90mg Bisglycinate & 110mg Oxide - High Strength Magnesium Complex for Men & Women - Tablets & Powder Supplements Alternative**Nutravita**£6.43**4.2★39 rev](https://www.amazon.co.uk/dp/B0G3Y87SJD) [2**Magnesium Glycinate Capsules Provide 300 mg of Pure Elemental Magnesium Per Serving 120 Vegan Caps | Magnesium Supplement Non GMO Dairy & Gluten Free**iperk**£8.41**4.4★1,505 rev](https://www.amazon.co.uk/dp/B08PDDFLZL) [3**Magnesium Glycinate 200mg from 1 540mg Fully Reacted Chelated Magnesium Bisglycinate | High Absorption | Relaxation & Nerve Function Supplement | Non-GMO 120 Coated Tablets | by Health Thru Nutrition**Health Thru Nutrition**£8.31**4.5★648 rev](https://www.amazon.co.uk/dp/B0F4SS6LRF) [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**Nutravita Magnesium Supplements 5-in-1 Complex 1146mg - Which? Best Buy 2025-240 Magnesium Complex Capsules - 400mg Elemental - Bisglycinate Citrate Malate Oxide - Muscles & Sleep Supplement**Nutravita**£14.76**4.6★1,125 rev](https://www.amazon.co.uk/dp/B0CP9KVWFP)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Nutravita Magnesium Glycinate - 120 Vegan Capsules - 200mg Elemental Mag 90mg Bisglycinate & 110mg Oxide - High Strength Magnesium Complex for Men & Women - Tablets & Powder Supplements Alternative**Nutravita**£6.43**39 rev8mo ago](https://www.amazon.co.uk/dp/B0G3Y87SJD) [**Magnesium Glycinate | Vitamin B6 | 200mg - 120 Capsules & 2 Month Supply | Chelated Absorption | Support Energy Metabolism | Made in UK | Non GMO | Vegan | Gluten Free**My Supplement Farm**£10.87**18 rev8mo ago](https://www.amazon.co.uk/dp/B0G21Z42KX) [**Nootro Essentials Magnesium Glycinate Capsules with Vitamin B Complex for Sleep Calm & Muscle Support Vegan (60 Servings - 2 Capsules Daily 2 Month Supply)**Nootro Labs**£10.60**182 rev1y ago](https://www.amazon.co.uk/dp/B0FGXZBRX4) [**Magnesium Glycinate High Strength 1500mg - High Absorption Easy to Digest - UK Made Supplement for Sleep & Energy - Mag Bisglycinate with Vitamin B6 Tablets - 300mg Elemental Magnesium - 60 Capsules**PharmaZen**£6.31**1,739 rev1y ago](https://www.amazon.co.uk/dp/B0FFV93PFJ) [**Magnesium Glycinate 200mg from 1 540mg Fully Reacted Chelated Magnesium Bisglycinate | High Absorption | Relaxation & Nerve Function Supplement | Non-GMO 120 Coated Tablets | by Health Thru Nutrition**Health Thru Nutrition**£8.31**648 rev1y ago](https://www.amazon.co.uk/dp/B0F4SS6LRF)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Nutravita Magnesium Glycinate - 120 Vegan Capsules - 200mg Elemental Mag 90mg Bisglycinate & 110mg Oxide - High Strength Magnesium Complex for Men & Women - Tablets & Powder Supplements Alternative**Nutravita**£6.43**4.2★**▲ 126%**](https://www.amazon.co.uk/dp/B0G3Y87SJD) [**INNOPURE Magnesium Glycinate (Bisglycinate) 200mg Elemental per Serving Gentle & Bioavailable 90 Vegan Capsules Made in the UK**INNOPURE**£10.40**4.4★**▲ 88%**](https://www.amazon.co.uk/dp/B0BZSP2RLH) [**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★**▲ 46%**](https://www.amazon.co.uk/dp/B0C3JVMT7S) [**Magnesium Supplements Tablets**Vitabiotics Ultra**£3.44**4.6★**▲ 26%**](https://www.amazon.co.uk/dp/B00LNDGDDG) [**Daily Magnesium Glycinate 1500mg | Provides 300mg of Pure Elemental Magnesium | Fatigue Mood and Muscle Recovery | 60 Vegan Capsules | Two-A-Day**dr vegan**£10.69**4.6★**▲ 26%**](https://www.amazon.co.uk/dp/B0FCYQSWFB)
**~~View all trending →~~**
## **What buyers say about magnesium glycinate 200mg**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Sleep Quality**27%
*“Does help sleep”*
**Quality-Overall**16%
*“the quality is always consistent”*
**Magnesium**10%
*“Best magnesium supplement around”*
**Value For Money**9%
*“Good value for money”*
**Advertised Vs Actual Product**5%
*“accurate description”*
**Muscle Pain Relief**4%
*“Improved my muscle spasms greatly”*
**Vitamin**3%
*“Important vitamins”*
**Efficiency**3%
*“Effective”*
**Ease Of Chewing/Swallowing**2%
*“I have had no issues swallowing them”*
**Ease Of Use**2%
*“Easy to use”*
### **What buyers complain about **
**Sleep Quality**16%
*“unable to sleep”*
**Magnesium**9%
*“This magnesium does not work”*
**Functionality-Overall**6%
*“It does absolutely nothing”*
**Size-Overall**6%
*“Too big”*
**Acid Regulator/Stomach Ache Relief**5%
*“Caused severe stomach cramps”*
**Dosage**5%
*“The dose is misleading”*
**Side Effects**5%
*“No side effects didn't work”*
**Quality-Overall**3%
*“There is no reason for this sort of quality control failure unless I am misunderstanding the process”*
**Ease Of Chewing/Swallowing**3%
*“Quite big to swallow”*
**Advertised Vs Actual Product**3%
*“Misleading information about the product”*
### **Top return reasons **
**Magnesium**50%
**Joint Pain**50%
## **Common questions**
- **Is magnesium glycinate 200mg profitable to sell on Amazon United Kingdom?**
- The niche generates £63K/yr across 23 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is -41.6%. Flapen's verdict: Skip it (39/100).
- **How competitive is the magnesium glycinate 200mg niche?**
- 18 brands and 52 sellers compete. The top 5 products take 66% of clicks and top 5 brands hold 75% of demand.
- **What do buyers complain about in magnesium glycinate 200mg?**
- Top complaints mined from reviews: Sleep Quality, Magnesium, Functionality-Overall. The return rate is 0.1%.
- **What does it cost to enter the magnesium glycinate 200mg niche?**
- Listings span £3.44–£16.79; the average listing price is £9.84 (sweet spot $15–$100). The average incumbent carries 3,629 reviews — the moat a new listing must climb.
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