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0. Phenobarbital is a barbiturate and will cause a positive test result for barbiturates. Phenytoin (Dilantin) is not a barbiturate; however a metabolite, p-hydroxyphenytoin has minimal cross reactivity on the initial screening test. There is no interfe.... Phenobarbital is a barbiturate and will cause a positive test result for barbiturates. Phenytoin (Dilantin) is not a barbiturate; however a metabolite, p-hydroxyphenytoin has minimal cross reactivity on the initial screening test. There is no interfe...
Upon discharge a narcotic, hydromorphone 2 mg bid PRN, was started. Hydromorphone, like morphine and oxymorphone, is metabolized primarily by through glucuronidation by uridine diphosphate glucuronosyl transferase enzymes in the liver rather than the cytochrome p450 system and, therefore, does not interact with diltiazem .