There may be an interaction between diphenhydramine and any of the following:alcohol.anticholinergics (e.g., benztropine, oxybutynin)antihistamines (e.g., brompheniramine, chlorpheniramine)barbiturates (e.g., phenobarbital, butalbital)benzodiazepines (e.g., diazepam, lorazepam, oxazepam)More items...
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