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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...
Cartia XT Treatment and Use. Cartia XT | Diltiazem Hydrochloride is a nondihydropyridine (non-DHP) drug of the classification of drugs known as calcium channel blockers, and is used for the treatment of hypertension, certain types of arrhythmias and angina pectoris.