Phenergan Injection: Uses for Allergies, Nausea & Motion Sickness

Phenergan Injection contains Promethazine, a medicine used to treat allergies, motion sickness, nausea, and vomiting. It works by blocking histamine and calming the brain’s nausea center, helping reduce allergic reactions and prevent vomiting. It is also used before or after surgery to reduce nausea and anxiety. Since it can cause drowsiness, Phenergan Injection is given only under medical supervision
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