Caverject dual chamber injections are used to treat erectile dysfunction in adult males, according to Caverject. The medication comes as prefilled, single-use injections, allowing the exact dose to be selected and prescribed by a physician.
Since Caverject is a single-use injection, any medication left in the syringe after injection should be discarded, states Caverject. Since the dose is prescribed for each individual person, Caverject should not be shared between multiple people. The correct dose for one person may not be right for another. After completing the injection, an erection should develop in five to 20 minutes. The erection should last for no longer than one hour.
Caverject is stored at room temperature and should never be refrigerated or frozen, warns Caverject. It should also be injected within 24 hours of mixing the medication in the syringe.
If an erection lasts longer than four hours, medical attention should be sought. Erections lasting longer than four hours can cause penis damage. Caverject injections should not be used if patients have a medical history of sickle cell anemia, leukemia, or tumors of the bone marrow, lists Caverject. Patients who have a penile implant or any penis problems also should not use these injections.