Anti-Allergic/Asthma

Phenergan (Promethazine)

Phenergan is used for relieving allergy symptoms, including hives and nasal congestion. It is used to prevent and control pain and nausea during and after surgery. It is also used to help produce light sleep, and for the prevention of motion sickness. Phenergan is not to be used to treat asthma. It may also be used for other conditions as determined by your doctor.

Use Phenergan as directed by your doctor. Check the label on the medicine for exact dosing instructions.
Take Phenergan by mouth with or without food. If stomach upset occurs, take with food to reduce stomach irritation.
If you are using Phenergan for motion sickness, take a dose at least 30 to 60 minutes before you begin traveling.

Phenergan is a phenothiazine antihistamine. It works by blocking the sites where histamine acts.

If you miss a dose of Phenergan and you are using it regularly, take it as soon as possible. If it is almost time for your next dose, skip the missed dose and go back to you regular dosing schedule. Do not take 2 doses at once.

Store at room temperature away from sunlight and moisture. Do not store in the bathroom. Keep all medicines away from children and pets.

Do NOT use Phenergan if:

• you are allergic to any ingredient in Phenergan
• you have severe central nervous system depression or are in a coma
• you are also taking astemizole, cisapride, terfenadine, or tramadol

• if you are pregnant, planning to become pregnant, or are breast-feeding
• if you are taking any prescription or nonprescription medicine, herbal preparation, or dietary supplement
• if you have allergies to medicines, foods, or other substances
• if you have nervous system problems, bone marrow depression, heart problems, a blood disease, glaucoma, increased eye pressure, low blood pressure, liver problems, prostate problems, Parkinson disease, seizures, or Reye syndrome
• if you regularly consume large amounts of alcohol

• Charcoal or lithium because they may decrease Phenergan's effectiveness
• Angiotensin-converting enzyme (ACE) inhibitors (eg, enalapril), astemizole, cisapride, general anesthetics (eg, thiopental), methyldopa, terfenadine, or tramadol because side effects, such as low blood pressure and seizures, may occur
• ACE inhibitors (eg, enalapril), haloperidol, lithium, meperidine, metrizamide, monoamine oxidase inhibitors (MAOIs) (eg, phenelzine), naltrexone, polypeptide antibiotics (eg, actinomycin), or trazodone because the risk of their side effects may be increased by Phenergan
• Bromocriptine, epinephrine, levodopa, or pergolide because their effectiveness may be decreased by Phenergan