Is pure magnesium glycinate profitable to sell on Amazon United Kingdom?

The niche generates £152K/yr across 8 tracked products. 90-day search growth is +4.1%. Flapen's verdict: Skip it (41/100).

How competitive is the pure magnesium glycinate niche?

4 brands and 9 sellers compete. The top 5 products take 91% of clicks and top 5 brands hold 100% of demand.

What do buyers complain about in pure magnesium glycinate?

Top complaints mined from reviews: Sleep Quality, Magnesium, Functionality-Overall. The return rate is 0.1%.

What does it cost to enter the pure magnesium glycinate niche?

Listings span £7.13–£39.90; the average listing price is £20.15 (sweet spot $15–$100). The average incumbent carries 5,511 reviews — the moat a new listing must climb.

pure magnesium glycinate

Skip it

Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.

Returns

Incredible0.1%

return rate — above 5% kills the launch gate

Avg price

Great£20.15

avg listing price — sweet spot $15–$100

Conversion

Great7.6%

search→purchase rate — share of searches ending in a sale

Price range

Great£7.13–£39.90

cheapest to priciest tracked listing — scored on the share inside $15–$100

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Market size

Okay£152K

£152K/yr · 99K searches

Growth

Okay+4.1%

90-day search growth — must beat 0% to launch

Review moat

Bad5,510.5

avg incumbent reviews — the moat a new listing must climb

Competition

Bad91%

top-5 click share — a locked-up shelf

Brand share

Bad100%

top-5 brand share — brand-locked demand

According to Flapen's Amazon United Kingdom niche tracking, pure magnesium glycinate is a £152K/yr Amazon United Kingdom market (99K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 41/100.

Data updated Jul 25, 2026 · scored weekly · How we score niches

pure magnesium glycinate market data

Units sold / yr: 8K–10K; avg 750–1,000/product
Revenue / yr: £161K–£202K; units × avg price
Conversion rate: 7.6%
Avg BSR: #125
Page quality: 0%
Prime: 100%
Sponsored: 100%
Out of stock: 0.0%
Avg brand age: 39 months
Avg seller age: 164 days

Competition & brand share

The top 5 products capture 91% of clicks — a locked-up shelf that new listings rarely crack.

Brands

4 flat

Sellers

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

91%

Top 20: 100%

Open market

Pure Encapsulations63%
THORNE26%
Wellgard5%
Nutrition Geeks5%

Demand

Weekly Amazon search volume, last 12 weeks — +4.1% search growth over the last 90 days.

Open Trend

Top pure magnesium glycinate search terms

pure encapsulations magnesium glycinate27K/yr -1.0%11.1% conv.
pure magnesium glycinate23K/yr -17.8%7.5% conv.
thorne magnesium glycinate13K/yr +18.9%3.6% conv.
thorne magnesium bisglycinate11K/yr +79.2%2.6% conv.
magnesium glycinate pure7K/yr -18.9%4.6% conv.
pure magnesium6K/yr -8.1%6.3% conv.
magnesium glycinate thorne3K/yr +19.3%4.6% conv.
thorne magnesium3K/yr +12.1%4.6% conv.
magnesium glycinate pure encapsulations3K/yr -20.6%10.9% conv.
pure encapsulations magnesium3K/yr -8.0%7.8% conv.

All search terms

Top pure 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 8 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Pure Encapsulations Magnesium Glycinate 120mg - Bioavailable Magnesium Chelate Tiredness and Fatigue Supplement - 90 Capsules

Pure Encapsulations£23.304.6★922 rev

Thorne Magnesium CitraMate 90 Capsules

THORNE£15.564.5★110 rev

Pure Encapsulations Magnesium Glycinate 120mg - Bioavailable Magnesium Chelate Tiredness and Fatigue Supplement - 180 Capsules

Pure Encapsulations£39.904.6★922 rev

Pure Magnesium Glycinate by Wellgard - Not Mixed with Citrate or Malate High-Strength Magnesium Supplement Mag 1200 Vegan High Absorption Bisglycinate 240mg Elemental Magnesium Made in UK

Wellgard£7.134.5★4,461 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£8.114.5★35,795 rev

Newest

by launch date

Pure Encapsulations Magnesium (Citrate/Malate) 120mg - Highly Bioavailable Magnesium Chelate - 90 Capsules

Pure Encapsulations£16.38133 rev

2y ago

Pure Magnesium Glycinate by Wellgard - Not Mixed with Citrate or Malate High-Strength Magnesium Supplement Mag 1200 Vegan High Absorption Bisglycinate 240mg Elemental Magnesium Made in UK

Wellgard£7.134,461 rev

2y ago

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

3y ago

Pure Encapsulations Magnesium Glycinate 120mg - Bioavailable Magnesium Chelate Tiredness and Fatigue Supplement - 180 Capsules

Pure Encapsulations£39.90922 rev

7y ago

Pure Encapsulations Magnesium (Citrate) 150mg - Highly Bioavailable Magnesium Chelate - 180 Capsules

Pure Encapsulations£29.00311 rev

7y ago

What buyers say about pure magnesium glycinate

What buyers praise and complain about, mined from review topics.

What buyers love

Sleep Quality26%

“HELPS WITH SLEEP”

Quality-Overall16%

“The quality feels consistent”

Value For Money10%

“Not expensive”

Magnesium10%

“Best magnesium supplement around”

Advertised Vs Actual Product5%

“As Advertised”

Muscle Pain Relief4%

“Muscle pain improved”

Efficiency3%

“Works perfectly”

Vitamin3%

“Vitamins, easy to swallow good amount of supply”

Ease Of Chewing/Swallowing2%

“i've found no problem in swallowing them”

Ease Of Use2%

“Easy to use”

What buyers complain about

Sleep Quality15%

“still cant sleep”

Magnesium10%

“This magnesium does not work”

Functionality-Overall8%

“It does absolutely nothing”

Acid Regulator/Stomach Ache Relief7%

“Gives you stomach cramps”

Dosage5%

“The dosage is far too high”

Size-Overall4%

“The size is big”

Side Effects4%

“Will make you ill”

Quality-Overall3%

“Its low cost because its low quality”

Advertised Vs Actual Product3%

“Misleading information about the product”

Value For Money3%

“Expensive”

Top return reasons

Magnesium86%

Joint Pain14%

Common questions

Is pure magnesium glycinate profitable to sell on Amazon United Kingdom?: The niche generates £152K/yr across 8 tracked products. 90-day search growth is +4.1%. Flapen's verdict: Skip it (41/100).
How competitive is the pure magnesium glycinate niche?: 4 brands and 9 sellers compete. The top 5 products take 91% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in pure magnesium glycinate?: Top complaints mined from reviews: Sleep Quality, Magnesium, Functionality-Overall. The return rate is 0.1%.
What does it cost to enter the pure magnesium glycinate niche?: Listings span £7.13–£39.90; the average listing price is £20.15 (sweet spot $15–$100). The average incumbent carries 5,511 reviews — the moat a new listing must climb.