Is magnesium bisglycinate profitable to sell on Amazon United Kingdom?

The niche generates £296K/yr across 17 tracked products. 3 of 4 products launched in the last 360 days are still selling. 90-day search growth is +25.3%. Flapen's verdict: Worth a look (52/100).

How competitive is the magnesium bisglycinate niche?

16 brands and 23 sellers compete. The top 5 products take 75% of clicks and top 5 brands hold 79% of demand.

What do buyers complain about in magnesium bisglycinate?

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

When does demand for magnesium bisglycinate peak?

Demand peaks in Aug–Sep; the busiest month runs 11.7× the quietest.

What does it cost to enter the magnesium bisglycinate niche?

Listings span £4.65–£28.57; the average listing price is £11.58 (sweet spot $15–$100). The average incumbent carries 4,066 reviews — the moat a new listing must climb.

magnesium bisglycinate

Worth a look

Shows low returns (0.1%), but a concentrated shelf (top 5 take 75% of clicks) keeps it on the watch list.

Returns

Incredible0.1%

return rate — above 5% kills the launch gate

Conversion

Great10.4%

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

Price range

Good£4.65–£28.57

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

Growth

Good+25.3%

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

Market size

Good£296K

£296K/yr · 246K searches

Avg price

Okay£11.58

avg listing price — sweet spot $15–$100

Brand share

Okay79%

top-5 brand share — brands hold most of the demand

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Review moat

Bad4,066.47

avg incumbent reviews — the moat a new listing must climb

Competition

Bad75%

top-5 click share — a locked-up shelf

Signals Low Review Barrier

According to Flapen's Amazon United Kingdom niche tracking, magnesium bisglycinate is a £296K/yr Amazon United Kingdom market (246K searches/yr). The top 5 brands hold 79% of demand. Demand peaks in Aug–Sep. Verdict: Worth a look — 52/100.

Data updated Jul 24, 2026 · scored weekly · How we score niches

magnesium bisglycinate market data

Units sold / yr: 20K–25K; avg 1,000–1,250/product
Revenue / yr: £232K–£290K; units × avg price
Conversion rate: 10.4%
Avg BSR: #150
Page quality: 0%
Prime: 88%
Sponsored: 94%
Out of stock: 1.5%
Avg brand age: 37 months
Avg seller age: 170 days

Competition & brand share

The top 5 products capture 75% of clicks — a locked-up shelf that new listings rarely crack.

Brands

16 rising

Sellers

Top-5 brand share

79%

Top 20: 100%

Top-5 click share

75%

Top 20: 100%

Open market

18%

Nutrivo21%
SMNutrition16%
BULK POWDERS15%
Nutrition Geeks14%
WeightWorld13%
Zenutra3%
Open — no brand owns it (10 brands, 18%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +25.3% search growth over the last 90 days.

Peak months: Aug, Sep · busiest ÷ quietest = 11.7×

Open Trend

Top magnesium bisglycinate search terms

magnesium bisglycinate205K/yr +32.4%7.5% conv.
magnesium bisglycinate capsules18K/yr -38.5%7.7% conv.
bulk magnesium bisglycinate6K/yr +39.8%21.3% conv.
cytoplan magnesium bisglycinate4K/yr +45.8%10.7% conv.
bulk magnesium5K/yr -7.4%17.7% conv.
magnesium biglycinate3K/yr +0.0%7.7% conv.
magnesium glycinate bulk3K/yr +17.0%15.0% conv.
magnesio bisglicinato3K/yr -26.9%3.4% conv.

All search terms

Top magnesium bisglycinate 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 17 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Magnesium Bisglycinate 1000mg | Chelated Magnesium Bisglycinate for Higher Absorption | 120 Capsules - 2 Month Supply | Gentle Highly Absorbable No Fillers or Binders | Made in the UK

Nutrivo£7.654.6★100 rev

Magnesium Bisglycinate 400mg | 100% Chelated for Maximum Absorption & Bioavailability | Magnesium for Sleep Relaxation Muscle Health Stress & Energy Support | 120 Capsules (2-Month Supply)

SMNutrition£9.864.6★869 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

Magnesium Glycinate 1422mg - with Vitamin B6-180 Vegan Capsules

WeightWorld£8.364.6★3,974 rev

Bulk Magnesium Glycinate Bisglycinate Tablets 1000mg 60 Tablets

BULK POWDERS£4.654.0★646 rev

Newest

by launch date

Zenutra Magnesium Bisglycinate 700mg High Absorption Chelated Magnesium Glycinate for Sleep & Relaxation Muscle Function & Energy Vegan Friendly 90 Capsules (45 Day Supply)

Zenutra£13.4017 rev

3mo ago

BULK POWDERS£7.07704 rev

8mo ago

Magnesium Bisglycinate 1000mg | Chelated Magnesium Bisglycinate for Higher Absorption | 120 Capsules - 2 Month Supply | Gentle Highly Absorbable No Fillers or Binders | Made in the UK

Nutrivo£7.65100 rev

9mo ago

Chelated Magnesium Bisglycinate 2505mg per Daily Dose (Elemental 300 mg) - Unbuffered High Strength Magnesium Supplements for Women and Men 180 Capsules - Vegan

AAVALABS£14.33351 rev

11mo ago

Magnesium Bisglycinate 379mg Elemental Mg Superior Absorption NovoMin Magnesium Glycinate 120 Capsules UK Made GMP Standards Zero Additives Pullulan

Time Health£16.3350 rev

1y ago

What buyers say about magnesium bisglycinate

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

What buyers love

Sleep Quality26%

“Does help sleep”

Quality-Overall15%

“Excellent product”

Magnesium10%

“Best magnesium capsules”

Value For Money9%

“Excellent value for money”

Advertised Vs Actual Product5%

“Works as it says”

Muscle Pain Relief4%

“Muscle pain improved”

Efficiency3%

“Works perfectly”

Ease Of Chewing/Swallowing3%

“i've found no problem in swallowing them”

Vitamin2%

“Vitamins, easy to swallow good amount of supply”

Ease Of Use2%

“Easy to use”

What buyers complain about

Sleep Quality15%

“unable to sleep”

Magnesium9%

“This magnesium does not work”

Functionality-Overall9%

“It does absolutely nothing”

Acid Regulator/Stomach Ache Relief6%

“Gives you stomach cramps”

Dosage5%

“The dose is misleading”

Size-Overall4%

“These capsules are small”

Side Effects4%

“However, I have had some uncomfortable side effects:”

Advertised Vs Actual Product3%

“Misleading”

Value For Money3%

“Not worth it”

Quality-Overall3%

“poor quality control”

Top return reasons

Magnesium50%

Joint Pain50%

Common questions

Is magnesium bisglycinate profitable to sell on Amazon United Kingdom?: The niche generates £296K/yr across 17 tracked products. 3 of 4 products launched in the last 360 days are still selling. 90-day search growth is +25.3%. Flapen's verdict: Worth a look (52/100).
How competitive is the magnesium bisglycinate niche?: 16 brands and 23 sellers compete. The top 5 products take 75% of clicks and top 5 brands hold 79% of demand.
What do buyers complain about in magnesium bisglycinate?: Top complaints mined from reviews: Sleep Quality, Magnesium, Functionality-Overall. The return rate is 0.1%.
When does demand for magnesium bisglycinate peak?: Demand peaks in Aug–Sep; the busiest month runs 11.7× the quietest.
What does it cost to enter the magnesium bisglycinate niche?: Listings span £4.65–£28.57; the average listing price is £11.58 (sweet spot $15–$100). The average incumbent carries 4,066 reviews — the moat a new listing must climb.