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Phenergan Drug Information

Phenergan® (promethazine hydrochloride) is a prescription drug used for treating or preventing nausea, vomiting, hives, and motion sickness. It is also used to treat a number of other conditions. It comes in tablet, rectal suppository, syrup, and injectable form. Phenergan is usually taken one to three times daily. Great care should be taken if the drug is injected intravenously, as improper administration can cause severe tissue damage and may result in amputations.
Phenergan should not be given by "IV push" (when the medication is injected with a syringe rapidly into the IV line rather than dripped slowly into the line). Injection directly into a muscle is the preferred way to give the injectable form in most situations.
As with any drug, Phenergan may cause side effects. In most cases, these problems are minor and either require no treatment or can easily be treated. Serious side effects are less common. Some of the possible negative reactions to Phenergan include, but are not limited to:
  • Drowsiness
  • Confusion
  • Dry mouth.


Before you start taking Phenergan, drug information should be reviewed with your healthcare provider to help ensure safe treatment. Although this medicine is approved for use in both adults and children, it should never be given to children under two years old, as fatal breathing difficulties may occur.


(Click Phenergan for more information about this prescription drug, including details on how it works, when and how to take your dose, and what else you should discuss with your healthcare provider before starting treatment.)

Phenergan Drug Information

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