Magnesium glycinate comparison: heavy-metal lab reports and price per day (UK + EU)

8 magnesium glycinate products; 7 are lab verified with an independent batch report we opened ourselves. Prices were checked on seller pages on 18 Oct 2026 and the price per day is calculated at the label dose; € and £ are never mixed or converted. Only one lab-verified product has a UK seller (CLN Labs); the others are sold by EU shops.

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			Heavy metals (mg/kg)				Label match	Fillers	Form & serving		Sellers	Red flags
							Label match	Fillers	Form & serving		Sellers	Red flags
GymBeam Magnesium Bisglycinate Powder Unflavoured 250g A 8.7/10	GymBeam	Lab verified18 Jun 2026Report	<0.02 (well under the EU limit or below detection)	<0.01 (well under the EU limit or below detection)	<0.01 (well under the EU limit or below detection)	NT (not tested)	Yes	None	Magnesium bisglycinate powder, unflavoured 1–2 scoops (1 g each) a day = 110–220 mg magnesium	€0.052–€0.10/day (EU) calculated: €12.95 ÷ 125–250 · 1–2 g a day · out of stock when checked on 18 Oct 2026 (shop shows an estimated price)	EU GymBeam (gymbeam.com) (Ad)	⚠ 3 red flags Arsenic is not tested in the published report. Batch code differs by one character between the metals report and the magnesium report. Out of stock when we checked on 18 Oct 2026.
CLN Labs Magnesium Bisglycinate Capsules (Core Chelate) 120 caps A 8.0/10	CLN Labs	Lab verified16 Dec 2025Report	0.007 (well under the EU limit or below detection)	<0.001 (well under the EU limit or below detection)	<0.005 (well under the EU limit or below detection)	0.005 (no EU limit)	Unknown	None	Magnesium bisglycinate capsules (700 mg) 4 capsules a day = 308 mg magnesium (2,800 mg bisglycinate)	£0.30/day (UK) calculated: £8.99 ÷ 30 · 4 capsules a day · sale price (regular £9.99)	UK CLN Labs (clnlabs.co.uk, UK)	⚠ 1 red flag Magnesium is not measured on the finished product (metals only on the independent certificate).
VitaMoment Magnesiumbisglycinat 120 Kapseln B 7.8/10	VitaMoment	Lab verified2 Jun 2026Report	<0.020 (well under the EU limit or below detection)	<0.010 (well under the EU limit or below detection)	<0.010 (well under the EU limit or below detection)	<0.040 (well under the EU limit or below detection)	Yes	None	Magnesium bisglycinate capsules 2 capsules a day = 240 mg magnesium	€0.33/day (EU) calculated: €19.97 ÷ 60 · 2 capsules a day · one-time price (subscription from €14.98)	EU VitaMoment (vitamoment.de)	None found
Nature Heart Magnesium Bisglycinat 120 Kapseln B 7.7/10	Nature Heart	Lab verified10 Apr 2026Report	0.023 (well under the EU limit or below detection)	<0.010 (well under the EU limit or below detection)	<0.010 (well under the EU limit or below detection)	<0.040 (well under the EU limit or below detection)	Yes	None	Magnesium bisglycinate capsules 4 capsules a day = 360 mg magnesium (3,000 mg bisglycinate)	€0.65/day (EU) calculated: €19.60 ÷ 30 · 4 capsules a day · sale price (regular €24.60); 120 capsules is from the label in the seller’s product photo	EU Nature Heart (nature-heart.de)	⚠ 1 red flag The capsule count (120) comes from the label in the seller’s product photo; the shop’s unit price (€276.06/kg) implies 71 g, which we could not reconcile.
Inner Sparkle Magnesiumbisglycinat 120 Kapseln B 7.5/10	Inner Sparkle	Lab verified18 Dec 2025Report	0.017 (well under the EU limit or below detection)	<0.010 (well under the EU limit or below detection)	<0.005 (well under the EU limit or below detection)	<0.010 (well under the EU limit or below detection)	Unknown	None	Magnesium bisglycinate capsules 2 capsules a day = 300 mg magnesium	€0.30/day (EU) calculated: €17.95 ÷ 60 · 2 capsules a day	EU Inner Sparkle (innersparkle.de)	⚠ 1 red flag Elemental magnesium % is not stated and magnesium is not measured in the report.
MoleQlar Magnesium Bisglycinat Kapseln (MagChel) 120 B 7.3/10	MoleQlar	Lab verified21 Jul 2026Report	<0.020 (well under the EU limit or below detection)	<0.010 (well under the EU limit or below detection)	<0.010 (well under the EU limit or below detection)	<0.040 (well under the EU limit or below detection)	Yes	MCT oil (coconut)	Magnesium bisglycinate capsules (MagChel) 2 capsules a day = 225 mg magnesium (1,900 mg MagChel)	€0.33/day (EU) calculated: €19.90 ÷ 60 · 2 capsules a day	EU MoleQlar (moleqlar.com)	⚠ 2 red flags Contains MCT oil as a carrier (not single-ingredient). Microbiology is not in the published report.
HSN Magnesium Glycinate (Chelated) 500g B 6.7/10	HSN	Lab verified7 Aug 2025Report	<0.020 (well under the EU limit or below detection)	<0.020 (well under the EU limit or below detection)	<0.010 (well under the EU limit or below detection)	<0.020 (well under the EU limit or below detection)	Unknown	None	Magnesium bisglycinate (chelate) powder 3 g per day (2 × 1.5 g): 330 mg magnesium (88% NRV)	€0.15/day (EU) calculated: €25.19 ÷ 167 · 3 g a day · sale price (regular €44.99)	EU HSN product page (hsnstore.eu) (Ad)	⚠ 2 red flags Report is from August 2025 (14 months old); we are asking HSN for a 2026 batch report. Magnesium content is not measured in the published report.
Peak Supps Magnesium Glycinate 500g Score Not enough data	Peak Supps	Unverified: brand claim only	— (no data)	— (no data)	— (no data)	— (no data)	—	—	—	£0.13/day (UK) calculated: £20.99 ÷ 167 · 3 g a day	UK Peak Supps	None found

Heavy-metal colours: Well under the EU limit (below half) or below detection Near the EU limit (half the limit up to the limit) Over the EU limit Grey: no EU limit (arsenic), not tested, or the lab’s reporting limit is above the EU limitEU 2023/915 limits for food supplements: lead (Pb) 3.0, cadmium (Cd) 1.0, mercury (Hg) 0.10 mg/kg. Values in mg/kg. NT = not tested; c = calculated by us from µg per serving.

Pb = lead, Cd = cadmium, Hg = mercury, As = arsenic, all in mg/kg. “<” means below the lab’s detection limit. Pass* = certificate states compliance without a figure. — = no data. Label match = the lab measured the active content against the label. The lab name, full notes and per-serving details are on each product page.

GymBeam Magnesium Bisglycinate Powder Unflavoured 250g
A 8.7/10

Brand

GymBeam

Lab-test status

Lab verified18 Jun 2026Report

Heavy metals (mg/kg)

Pb <0.02 (well under the EU limit or below detection)Cd <0.01 (well under the EU limit or below detection)Hg <0.01 (well under the EU limit or below detection)As NT (not tested)

Label match

Yes

Fillers

None

Form & serving

Magnesium bisglycinate powder, unflavoured

1–2 scoops (1 g each) a day = 110–220 mg magnesium

Price per daily dose

€0.052–€0.10/day (EU)

calculated: €12.95 ÷ 125–250 · 1–2 g a day · out of stock when checked on 18 Oct 2026 (shop shows an estimated price)

Sellers

EU GymBeam (gymbeam.com) (Ad)

Red flags

⚠ 3 red flags

Arsenic is not tested in the published report.
Batch code differs by one character between the metals report and the magnesium report.
Out of stock when we checked on 18 Oct 2026.

CLN Labs Magnesium Bisglycinate Capsules (Core Chelate) 120 caps
A 8.0/10

Brand

CLN Labs

Lab-test status

Lab verified16 Dec 2025Report

Heavy metals (mg/kg)

Pb 0.007 (well under the EU limit or below detection)Cd <0.001 (well under the EU limit or below detection)Hg <0.005 (well under the EU limit or below detection)As 0.005 (no EU limit)

Label match

Unknown

Fillers

None

Form & serving

Magnesium bisglycinate capsules (700 mg)

4 capsules a day = 308 mg magnesium (2,800 mg bisglycinate)

Price per daily dose

£0.30/day (UK)

calculated: £8.99 ÷ 30 · 4 capsules a day · sale price (regular £9.99)

Sellers

UK CLN Labs (clnlabs.co.uk, UK)

Red flags

⚠ 1 red flag

Magnesium is not measured on the finished product (metals only on the independent certificate).

VitaMoment Magnesiumbisglycinat 120 Kapseln
B 7.8/10

Brand: VitaMoment
Lab-test status: Lab verified2 Jun 2026Report
Heavy metals (mg/kg): Pb <0.020 (well under the EU limit or below detection)Cd <0.010 (well under the EU limit or below detection)Hg <0.010 (well under the EU limit or below detection)As <0.040 (well under the EU limit or below detection)
Label match: Yes
Fillers: None
Form & serving: Magnesium bisglycinate capsules
2 capsules a day = 240 mg magnesium
Price per daily dose: €0.33/day (EU)
calculated: €19.97 ÷ 60 · 2 capsules a day · one-time price (subscription from €14.98)
Sellers: EU VitaMoment (vitamoment.de)
Red flags: None found

Nature Heart Magnesium Bisglycinat 120 Kapseln
B 7.7/10

Brand

Nature Heart

Lab-test status

Lab verified10 Apr 2026Report

Heavy metals (mg/kg)

Pb 0.023 (well under the EU limit or below detection)Cd <0.010 (well under the EU limit or below detection)Hg <0.010 (well under the EU limit or below detection)As <0.040 (well under the EU limit or below detection)

Label match

Yes

Fillers

None

Form & serving

Magnesium bisglycinate capsules

4 capsules a day = 360 mg magnesium (3,000 mg bisglycinate)

Price per daily dose

€0.65/day (EU)

calculated: €19.60 ÷ 30 · 4 capsules a day · sale price (regular €24.60); 120 capsules is from the label in the seller’s product photo

Sellers

EU Nature Heart (nature-heart.de)

Red flags

⚠ 1 red flag

The capsule count (120) comes from the label in the seller’s product photo; the shop’s unit price (€276.06/kg) implies 71 g, which we could not reconcile.

Inner Sparkle Magnesiumbisglycinat 120 Kapseln
B 7.5/10

Brand

Inner Sparkle

Lab-test status

Lab verified18 Dec 2025Report

Heavy metals (mg/kg)

Pb 0.017 (well under the EU limit or below detection)Cd <0.010 (well under the EU limit or below detection)Hg <0.005 (well under the EU limit or below detection)As <0.010 (well under the EU limit or below detection)

Label match

Unknown

Fillers

None

Form & serving

Magnesium bisglycinate capsules

2 capsules a day = 300 mg magnesium

Price per daily dose

€0.30/day (EU)

calculated: €17.95 ÷ 60 · 2 capsules a day

Sellers

EU Inner Sparkle (innersparkle.de)

Red flags

⚠ 1 red flag

Elemental magnesium % is not stated and magnesium is not measured in the report.

MoleQlar Magnesium Bisglycinat Kapseln (MagChel) 120
B 7.3/10

Brand

MoleQlar

Lab-test status

Lab verified21 Jul 2026Report

Heavy metals (mg/kg)

Pb <0.020 (well under the EU limit or below detection)Cd <0.010 (well under the EU limit or below detection)Hg <0.010 (well under the EU limit or below detection)As <0.040 (well under the EU limit or below detection)

Label match

Yes

Fillers

MCT oil (coconut)

Form & serving

Magnesium bisglycinate capsules (MagChel)

2 capsules a day = 225 mg magnesium (1,900 mg MagChel)

Price per daily dose

€0.33/day (EU)

calculated: €19.90 ÷ 60 · 2 capsules a day

Sellers

EU MoleQlar (moleqlar.com)

Red flags

⚠ 2 red flags

Contains MCT oil as a carrier (not single-ingredient).
Microbiology is not in the published report.

HSN Magnesium Glycinate (Chelated) 500g
B 6.7/10

Brand

HSN

Lab-test status

Lab verified7 Aug 2025Report

Heavy metals (mg/kg)

Pb <0.020 (well under the EU limit or below detection)Cd <0.020 (well under the EU limit or below detection)Hg <0.010 (well under the EU limit or below detection)As <0.020 (well under the EU limit or below detection)

Label match

Unknown

Fillers

None

Form & serving

Magnesium bisglycinate (chelate) powder

3 g per day (2 × 1.5 g): 330 mg magnesium (88% NRV)

Price per daily dose

€0.15/day (EU)

calculated: €25.19 ÷ 167 · 3 g a day · sale price (regular €44.99)

Sellers

EU HSN product page (hsnstore.eu) (Ad)

Red flags

⚠ 2 red flags

Report is from August 2025 (14 months old); we are asking HSN for a 2026 batch report.
Magnesium content is not measured in the published report.

Peak Supps Magnesium Glycinate 500g
Score Not enough data

Brand: Peak Supps
Lab-test status: Unverified: brand claim only
Heavy metals (mg/kg): Pb — (no data)Cd — (no data)Hg — (no data)As — (no data)
Label match: —
Fillers: —
Form & serving: —
Price per daily dose: £0.13/day (UK)
calculated: £20.99 ÷ 167 · 3 g a day
Sellers: UK Peak Supps
Red flags: None found

EU 2023/915 limits for food supplements: lead 3.0, cadmium 1.0, mercury 0.10 mg/kg. Pure magnesium bisglycinate is about 14% elemental magnesium by weight, so a label or lab figure clearly above 14% suggests magnesium oxide padding (“buffered”); every lab-verified product here that states a figure declares or measured 11–12%. Products with fillers or oxide padding are not listed. Prices can change.

Not medical advice. Testing status can’t be bought; seller links may be affiliate links (see disclosure). Disclosure

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About Magnesium Glycinate

What it is: Magnesium bound to the amino acid glycine (also called bisglycinate).
Common forms: Powder or capsules. Pure magnesium bisglycinate is about 14% elemental magnesium by weight (real raw materials are usually 10–12%). A label or lab figure clearly above 14% cannot come from bisglycinate alone and usually means cheaper magnesium oxide (about 60% magnesium) has been mixed in, sold as “buffered”.
Typical label doses: Labels in our directory give 110–360 mg elemental magnesium a day: 2–4 capsules, or 1–3 g of powder. The EU/UK nutrient reference value for magnesium is 375 mg a day.

Authorised health claims (EU and GB registers)

“Magnesium contributes to a reduction of tiredness and fatigue.” Condition: at least a source of magnesium (EU rules). Sources: EU register · EU Regulation 432/2012 · GB NHC register (Checked on the registers 2026-10-16)
“Magnesium contributes to normal muscle function.” Condition: at least a source of magnesium (EU rules). Sources: EU register · EU Regulation 432/2012 · GB NHC register (Checked on the registers 2026-10-16)
“Magnesium contributes to normal functioning of the nervous system.” Condition: at least a source of magnesium (EU rules). Sources: EU register · EU Regulation 432/2012 · GB NHC register (Checked on the registers 2026-10-16)
“Magnesium contributes to normal psychological function.” Condition: at least a source of magnesium (EU rules). Sources: EU register · EU Regulation 432/2012 · GB NHC register (Checked on the registers 2026-10-16)

Information only, not medical advice. Food supplements are not intended to diagnose, treat, cure or prevent any disease. Speak to a healthcare professional before use, especially if pregnant or on medication.

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