Assertion: promethazine | /r/CapableOf | treat light sedation
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text: In the US, Phenergan (promethazine systemic) is a member of the following drug classes: antihistamines, phenothiazine antiemetics and is used to treat Allergic Reactions, Allergic Rhinitis, Anaphylaxis, Light Sedation, Motion Sickness, Nausea/Vomiting, Opiate Adjunct, Sedation, Urticaria and Vertigo.