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Commonly discussed options include injectable, oral, and topical forms

Mechanisms of Drug Entry into Human Milk The amount of drug excreted into milk depends on a number of kinetic factors: 1) the lipid solubility of the drug, 2) the molecular size of the drug, 3) the blood level attained in the maternal circulation, 4) protein binding in the maternal circulation, 5) oral bioavailability in the infant, and the mother, and 6) the half-life in the maternal and infant's plasma compartments

Compan V, Pierredon S, Vanderperre B, Krznar P, Marchiq I, Zamboni N, et al

A decline in ACE2 function in aged individuals, coupled with the age-associated deterioration in mitochondrial functions results in chronic metabolic disorders like diabetes or cancer, and predisposes the host for increased susceptibility to infection, vulnerability to health complications, and intensifies the risk of mortality 163