Cimetidine and lidocaine.
D002927:Cimetidine / Q000494:pharmacology*; D004347:Drug Interactions; D006146:Guanidines / Q000494:pharmacology*; D006801:Humans; D008012:Lidocaine / Q000097:blood*
D006146:Guanidines; D002927:Cimetidine; D008012:Lidocaine