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Promethazine
Pronounced pro-METH-ah-zeen
Brand names: Phenergan
Type: Antihistamine and antiemetic · All Digestive (GI) Medicines
What Promethazine is used for
- Nausea and vomiting
- Motion sickness
- Sedation
- Allergy symptoms
Common side effects
- Drowsiness
- Dry mouth
- Blurred vision
- Dizziness
Important cautions
- Must not be used in children under 2 years old because of the risk of fatal slowed breathing, and is used cautiously in all young children
- Can severely injure tissue if it leaks from a vein — injection technique matters
- Strongly sedating, especially in older adults
How it comes
Tablets, liquid, suppositories, injection (hospital). This guide lists forms only — it never lists strengths or doses.
Related medicines — Digestive (GI) Medicines
Please note: This page is a patient-education summary, not medical advice, and it deliberately contains no doses. Medicines affect everyone differently — always follow your own prescription and talk to your doctor or pharmacist before starting, stopping or changing any medicine.