Phenergan

Generic name: Promethazine hydrochloride

Why is Phenergan prescribed?

Phenergan is an antihistamine that relieves nasal stuffiness and inflammation and red, inflamed eyes caused by hay fever and other allergies. It is also used to treat itching, swelling, and redness from hives and other rashes; allergic reactions to blood transfusions; and, with other medications, anaphylactic shock (severe allergic reaction).

Phenergan is also used as a sedative and sleep aid for both children and adults, and is prescribed to prevent and control nausea and vomiting before and after surgery and to prevent and treat motion sickness. It is also used, with other medications, for pain after surgery.

Antihistamines work by decreasing the effects of histamine, a chemical the body releases in response to certain irritants. Histamine narrows air passages in the lungs and contributes to inflammation. Antihistamines reduce itching and swelling and dry up secretions from the nose, eyes, and throat.

Most important fact about Phenergan

Phenergan may cause considerable drowsiness. You should not drive or operate dangerous machinery or participate in any hazardous activity that requires full mental alertness until you know how you react to Phenergan. Children should be carefully supervised while they are bike-riding, roller-skating, or playing until the drug's effect on them is established.

How should you take Phenergan?

Take Phenergan exactly as prescribed.

• If you miss a dose...
  If you are taking Phenergan on a regular schedule, take the forgotten dose as soon as you remember. If it is almost time for your next dose, skip the one you missed and go back to your regular schedule. Never take 2 doses at once.

• Storage instructions...
  Tablets should be stored at room temperature, away from light. Suppositories should be stored in the refrigerator, in a tightly closed container.

What side effects may occur?

Side effects cannot be anticipated. If any develop or change in intensity, inform your doctor as soon as possible. Only your doctor can determine if it is safe for you to continue taking Phenergan.