SIDE EFFECT: NO: BENADRYL (diphenhydramine) AND ANTIHISTAMINES IN GENERAL CAN CAUE URINARY RETENTION. This is more likely I n men with BPH.
Answered 4/29/2015
2.9k views
No but: No but it can certainly impair urination through it's anticholinergic effect.
Answered 11/27/2015
1.9k views
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