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FDA Information
Promethazine HCI was approved by the FDA in 1951 and is used to treat hay fever, allergy-related stuffy or runny nose, and other minor allergies.
It is a prescription drug in the United States, but is available over the counter in the United Kingdom, Switzerland, and many other countries (in its brand name forms PhenerganŽ and PrometheganŽ).
Why is this medication prescribed?
Dosage and using this medicine
What special precautions should I follow?
What should I do if I forget a dose?
What side effects can this medication cause?