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PRECAUTIONS: Before using alprostadil, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies.This medication should not be used if you have certain medical conditions. Before using this medicine, consult your doctor or pharmacist if you have: genito-urinary tract disorder (e.g., urethral stricture/obstruction, urethritis, inflammation/infection of the head of the penis), indwelling urethral catheter.Before using this medication, tell your doctor or pharmacist your medical history, especially of: penis conditions (e.g., angulation, cavernosal fibrosis, Peyronie's disease), bleeding disorders, blood system cancers (e.g., leukemia, multiple myeloma), heart disease, low blood pressure, sickle cell anemia.This drug may make you dizzy. Do not drive, use machinery, or do any activity that requires alertness until you are sure you can perform such activities safely. Limit alcoholic beverages.Use of this drug does not protect against sexually transmitted diseases (e.g., HIV, hepatitis B, gonorrhea, syphilis). To decrease your risk of infection, always use an effective barrier method such as a latex or polyurethane condom during all sexual activity. Consult your doctor or pharmacist for more details.This medication is not for use in women. If this drug is used by a male for sexual intercourse with a pregnant woman, an effective barrier method such as a latex or polyurethane condom should be used. Consult your doctor or pharmacist for more details.

DRUG INTERACTIONS: Your doctor or pharmacist may already be aware of any possible drug interactions and may be monitoring you for them. Do not start, stop, or change the dosage of any medicine before checking with your doctor or pharmacist first.Before using this medication, tell your doctor or pharmacist of all prescription and nonprescription/herbal products you may use, especially of: "blood thinners" (e.g., warfarin, heparin), high blood pressure medicines.This document does not contain all possible interactions. Therefore, before using this product, tell your doctor or pharmacist of all the products you use. Keep a list of all your medications with you, and share the list with your doctor and pharmacist.

Report Problems to the Food and Drug Administration   You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088. Need help identifying pills and medications? Use the pill identifier tool on RxList.