Can i take promethazine codeine syrup with benadryl?

answered:

Why?

Promethazine
Promethazine and Benadryl are both antihistamines. The combination of Prometh. with Codeine should be used the treatment of uncontrolled coughing. Unfortunately, the purple syrup is frequently abused in a number of unusual ways. To add Benadryl to the combination syrup doesn't make much sense in most circumstances and could lead to at least drowsiness or worse.
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Drowsiness Benadryl Promethazine Cough Antihistamine Diphenhydramine