Cimetidin, en ikke- specifik moderat inhibitor af flere leverenzymer, incl. både aldehyd oxidase og CYP3A4, bevirkede en 85% stigning i plasmakoncentrationen af zaleplon, fordi det hæmmede både de primære (aldehyd oxidase) og de sekundære (CYP3A4) enzymer, som er ansvarlige for metaboliseringen af zaleplon.
Cimetidine, a non-specific moderate inhibitor of several hepatic enzymes including both aldehyde oxidase and CYP3A4, produced an 85% increase in plasma concentrations of zaleplon because it inhibited both the primary (aldehyde oxidase) and secondary (CYP3A4) enzymes responsible for zaleplon’ s metabolism.