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Do not use CAVERJECT IMPULSE if you have:

  • Certain medical problems that might cause you to have an erection that lasts for more than 4 hours, such as sickle cell anemia, sickle cell trait, multiple myeloma, or leukemia
  • A deformed penis shape
  • A penile implant

Women and children should not use CAVERJECT.

Before you use CAVERJECT IMPULSE, tell your healthcare provider if you:

  • Have had an erection that lasted more than 4 hours
  • Have sickle cell trait or sickle cell anemia
  • Have or have had a blood cell cancer called multiple myeloma or leukemia
  • Have a deformed penis shape
  • Have a penile implant
  • Have low blood pressure (hypotension)
  • Have bleeding problems
  • Have or have had heart problems such as a heart attack, irregular heartbeat, angina, chest pain, narrowing of the aortic valve or heart failure
  • Have any other medical conditions

Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements. CAVERJECT IMPULSE may affect the way other medicines work, and other medicines may affect the way CAVERJECT IMPULSE works, causing side effects.

Especially tell your healthcare provider if you take any other medicines that are injected into your penis (intracavernosally) or certain medicines called anticoagulant medicines (such as heparin or warfarin).

CAVERJECT IMPULSE may cause serious side effects, including:

  • An erection that will not go away. If you have an erection that lasts more than 4 hours, get medical help right away. If it is not treated right away, this condition can permanently damage your penis
  • Deformed penis shape (penile fibrosis). Your healthcare provider should check your penis regularly for signs of penile fibrosis. You should not continue to use CAVERJECT IMPULSE if you get penile fibrosis
  • Low blood pressure (hypotension)
  • Injection site bleeding. People who take certain medicines called anticoagulants (such as heparin or warfarin) may have a risk for increased bleeding at the injection site
  • Increased risk of heart problems. Sexual activity can put an extra strain on your heart, especially if your heart is weak from a heart attack or heart disease. Ask your healthcare provider if your heart is healthy enough to handle the extra strain of having sex. Stop sexual activity and immediately contact your healthcare provider for advice if you get symptoms of a heart problem such as chest pain, dizziness or nausea
  • Needle breakage. There is a possibility of needle breakage with use of CAVERJECT IMPULSE. To best avoid breaking the needle, you should pay careful attention to your healthcare provider’s instructions and try to handle the syringe and needle properly. If the needle breaks during injection and you are able to see and grasp the broken end, you should remove it and contact your healthcare provider. If you cannot see or cannot grasp the broken end, you should promptly contact your healthcare provider

CAVERJECT IMPULSE does not protect you or your partner from getting sexually transmitted infections, including HIV- the virus that causes AIDS.

The most common side effects of CAVERJECT IMPULSE include:

  • Penile pain
  • Erection lasting 4 to 6 hours (prolonged erection)
  • Penile fibrosis
  • Bruising at the injection site
  • Penile disorders such as numbness, irritation, sensitivity, itching, swelling, and discoloration, or skin-tears of the penis
  • Penile rash
  • Penile swelling

Tell your healthcare provider if you have any side effect that bothers you or does not go away.


CAVERJECT IMPULSE is a prescription medicine that is used to treat erectile dysfunction in adult men.


Please see Full Prescribing InformationPatient Information, and Instructions for Use


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