Promethazine FAQ


What is Promethazine used for?

Promethazine is used to treat allergy symptoms, nausea, vomiting, and motion sickness.

How quickly does Promethazine work?

It usually takes about 20 to 30 minutes for promethazine to start working.

Can I take Promethazine for hay fever?

Yes, Promethazine can be used to relieve symptoms of hay fever such as runny nose and sneezing.

What is the recommended Promethazine dosage for adults?

The usual dose for treating allergies is 25 mg before bedtime or 12.5 mg before meals and at bedtime.

Are there any side effects of Promethazine?

Common side effects may include drowsiness, dizziness, blurred vision, and constipation.

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Information provided by Dr. Nithya Priya Raju. Reviewed by Dr. Mohamed El Khouly