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Iron forms: bisglycinate, classic salts and tolerability

Iron is supplied as ferrous or ferric salts, chelated iron (bisglycinate), liposomal iron, or standardised plant sources. This guide compares the catalogue's forms on factual criteria. Iron supplementation should always be based on a blood work-up.
Formes de fer — couverture du guide praticien
  • Compare based on elemental iron per serving (this is how EU labelling declares it). NRV: 14 mg.
  • Iron bisglycinate: the most common chelated form in the catalogue (≈20% elemental iron).
  • Iron carries EU-approved claims (red blood cells, oxygen transport, fatigue, cognitive function…).
  • Iron supplementation should be based on a blood work-up; check the manufacturer's contraindications.

Reading the dose in elemental iron

European labelling declares elemental iron per serving, to be measured against the NRV of 14 mg. Forms differ in their elemental content and their galenical formulation; the weight of the salt is not comparable from one form to another.

The forms in the catalogue

Iron bisglycinate

A chelate of iron and glycine (≈20% elemental iron), a form frequently chosen by manufacturers for the catalogue's iron-targeted formulations.

Classic salts (sulphate, fumarate)

Long-established ferrous salts, with variable elemental content; extensively documented. The product page states the exact form and dose.

Liposomal iron and plant sources

Liposomal iron encapsulates the mineral in phospholipids; certain plant sources (curry leaf, for example) are standardised for iron content. These options are listed in the catalogue with their guaranteed content.

Framework for use

Iron supplementation should be based on a blood work-up. Product pages list the doses and contraindications provided by manufacturers.

How to choose

Identify the form, the elemental iron dose per serving, the galenical formulation and any cofactors (vitamin C, which "increases iron absorption" according to the EU register). The Iron hub lists products by form.

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