Promethazine is a phenothiazine derivative that blocks histamine (H1) receptors, providing anti-allergic and sedative effects. It also has antiemetic (anti-nausea) properties through dopamine antagonism in the brain.
- Used to treat:
- Allergic conditions (e.g., rhinitis, urticaria)
- Motion sickness
- Nausea and vomiting
- Sedation before or after surgery
- Oral solution
- 6.25 mg/5 mL
- Promethazine Hydrochloride, USP
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