Alprostadil is used to treat erectile dysfunction (impotence) and to help diagnose certain causes of this disorder. Alprostadil is also used to improve blood flow in newborn babies with a certain genetic heart condition. This alprostadil medication guide addresses only the adult male use of this medicine in erectile disorders.

Alprostadil relaxes blood vessels and muscles in the penis. This increases blood flow into the penis, causing an erection.

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  • Caverject, Caverject Impulse, Edex, Muse, Prostin VR Pediatric, Edex Refill
  • Severity: Major
    You should check with your doctor immediately if any of these side effects occur when taking alprostadil:

    Curving of penis with pain during erection
    erection continuing for 4 to 6 hours
    erection continuing longer than 6 hours with severe and continuing pain of the penis
    swelling in or pain of the testes
    Severity: Minor
    Some of the side effects that can occur with alprostadil may not need medical attention. As your body adjusts to the medicine during treatment these side effects may go away. Your health care professional may also be able to tell you about ways to reduce or prevent some of these side effects. If any of the following side effects continue, are bothersome or if you have any questions about them, check with your health care professional:

    More common:
    Bleeding and pain at the injection site (short-term)
    painful erection
    Bruising or clotted blood in the penis at the injection site, usually caused by an incorrect injection
  • (injectable solution, injectable powder for injection, transurethral suppository, injectable kit, compounding powder)