Other divalent metal ions

Other divalent metal ions is a broad pharmacological and biochemical category encompassing various inorganic cations with a +2 oxidation state, such as calcium (Ca2+), magnesium (Mg2+), zinc (Zn2+), and iron (Fe2+), as well as non-essential toxic metals like lead (Pb2+) and cadmium (Cd2+). These ions are vital for life, serving as structural elements in the skeleton, essential cofactors for over 300 enzymes (particularly zinc and magnesium), and as secondary messengers in signaling pathways that regulate muscle contraction and neurotransmitter release (NIH, 2023; StatPearls, 2023). In a therapeutic context, these ions are typically managed rather than targeted; for instance, chelating agents like EDTA or penicillamine are used to treat metal toxicity by binding these ions into stable complexes for excretion (PubChem). Additionally, divalent ions themselves may be administered as therapeutic agents to treat deficiency states or as part of emergency medicine, such as the use of magnesium sulfate for eclampsia. Because this entry refers to a general chemical class rather than a specific biological macromolecule like a receptor or enzyme, it is considered a non-specific or categorical designation in drug-target databases.

Other names

Divalent cationsM2+ ionsDivalent metal cations

Chelation of metal ions to form stable, water-soluble complexes for renal excretion; competitive inhibition of toxic metal absorption; direct supplementation to correct physiological deficiencies.