Calcium comparison: lab tests, heavy metals and price (UK + EU)

2 products, 2 lab verified: a current independent lab report we have checked. Others have an outdated report, reporting limits too high to be useful, or no report. Figures come only from published reports and seller pages; “—” means we have no data, never an estimate.

About calcium ↓

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			Heavy metals (mg/kg)				Label match	Fillers	Form & serving		Sellers	Red flags
							Label match	Fillers	Form & serving		Sellers	Red flags
#1Heiltropfen Calcium Carbonate Powder 454g Score Not enough data	Heiltropfen	Lab verified26 Feb 2026Report	0.181 (well under the EU limit or below detection)	0.648 (near the EU limit)	<0.01 (well under the EU limit or below detection)	0.040 (no EU limit)	—	—	—	—	EU Heiltropfen	⚠ 2 red flags Cadmium 0.648 mg/kg is high vs typical mineral powders (still under EU 2023/915 1.0 mg/kg for supplements) — red-flag prominently. Sample sent in by the brand: check the batch number on your pack.
#2MoleQlar Calcium-Alphaketoglutarat Kapseln Score Not enough data	MoleQlar	Lab verified27 Oct 2026Report	Pass* (certificate states compliance, no figure)	<0.05 (well under the EU limit or below detection)	<0.005 (well under the EU limit or below detection)	<0.5 (well under the EU limit or below detection)	—	—	—	—	EU MoleQlar	⚠ 1 red flag Sample sent in by the brand: check the batch number on your pack.

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.

Heiltropfen Calcium Carbonate Powder 454g
Score Not enough data

Brand

Heiltropfen

Lab-test status

Lab verified26 Feb 2026Report

Heavy metals (mg/kg)

Pb 0.181 (well under the EU limit or below detection)Cd 0.648 (near the EU limit)Hg <0.01 (well under the EU limit or below detection)As 0.040 (no EU limit)

Label match

—

Fillers

—

Form & serving

—

Price per daily dose

—

Sellers

EU Heiltropfen

Red flags

⚠ 2 red flags

Cadmium 0.648 mg/kg is high vs typical mineral powders (still under EU 2023/915 1.0 mg/kg for supplements) — red-flag prominently.
Sample sent in by the brand: check the batch number on your pack.

MoleQlar Calcium-Alphaketoglutarat Kapseln
Score Not enough data

Brand

MoleQlar

Lab-test status

Lab verified27 Oct 2026Report

Heavy metals (mg/kg)

Pb Pass* (certificate states compliance, no figure)Cd <0.05 (well under the EU limit or below detection)Hg <0.005 (well under the EU limit or below detection)As <0.5 (well under the EU limit or below detection)

Label match

—

Fillers

—

Form & serving

—

Price per daily dose

—

Sellers

EU MoleQlar

Red flags

⚠ 1 red flag

Sample sent in by the brand: check the batch number on your pack.

EU 2023/915 limits for food supplements: lead 3.0, cadmium 1.0, mercury 0.10 mg/kg. “Pass (no value)” means the certificate states compliance without a figure. Prices were seen on seller pages when checked and can change; currencies differ, so compare within one currency.

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

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Calcium comparison: lab tests, heavy metals and price (UK + EU)

Heiltropfen Calcium Carbonate Powder 454gScore Not enough data

MoleQlar Calcium-Alphaketoglutarat KapselnScore Not enough data

Other comparisons

Heiltropfen Calcium Carbonate Powder 454g
Score Not enough data

MoleQlar Calcium-Alphaketoglutarat Kapseln
Score Not enough data