erectile dysfunction


This medicine is used for the treatment of erectile dysfunction, commonly called impotence. It works by relaxing certain muscles in the penis and widening blood vessels, which increases the blood flow to the penis and helps to cause an erection. When the effect of the drug wears off, blood flow returns to normal and the erection disappears.

Before using Caverject, tell your health care provider about any of the following: if you are taking any prescription or nonprescription medicine; if you are taking blood thinners; if you have stomach problems; if you have peptic ulcers; if you have any other medical condition like liver or kidney function impairment or heart problems.

What special warning(s) should I be aware of when taking Caverject?

  • Development of any unusual deformity of the penis while using this medicine is a signal to stop taking the injections and inform your health care provider.
  • Small amounts of bleeding at the injection site can increase the risk of transmission of blood-borne diseases such as HIV.
  • Use caution while driving or operating any machinery as Caverject may cause dizziness or drowsiness.
  • Caverject does not protect against the spread of sexually transmitted diseases.

Before using Caverject inform your doctor:

  • if you have blood problems, bone marrow problems or other conditions that may increase your risk for a prolonged, painful erection
  • if you have a penile implant, deformed penis, or certain other penile problems
  • if you have any other physical reason that you should not have sexual intercourse
  • if you have inflammation or infection of the penis, kidney problems, urinary problems, or a history of prolonged or painful erections
  • if you use other medicine for erectile problems
  • if you have a blood-borne disease (eg, HIV, hepatitis)

Side effects of Caverject

Most severe: Abnormal vision, back pain, bruising at the injection site, cough, dizziness, flu symptoms, headache, heart attack, high blood pressure, infection, inflamed or enlarged prostate, injuries/fractures/abrasions/lacerations/dislocations, leg pain, nasal congestion, pain, redness, sinus inflammation, skin disorders.

Most common: Blood-filled swelling at the site of injection, disorder of the penis (such as discoloration of the head, strange feeling, tearing of the skin), hardened tissue in the penis, pain in the penis, prolonged erection, upper respiratory infection.

Other: Abnormal ejaculation, bleeding at the urethra, blood in the urine, dizziness, dry mouth, extreme dilation of the pupils, fainting, fluid retention at the injection site, frequent or urgent urination, hemorrhage at the injection site, impaired urination, inflammation, irritation, itching, lack of sensation, leg cramps, low blood pressure, nausea, numbness, painful erection, pelvic pain, profuse sweating, rash on the penis, redness, sensitivity, swelling at the injection site, swelling of the head of the penis, swelling of the scrotum, testicular pain, tightness of the foreskin, warmth, weakness, yeast infection.

This information is advisory only. It does not contain all information about this medication. If you have any questions about Caverject, ask your doctor, pharmacist, or health care provider.

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