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Who is a candidate for penile injection therapy for erectile dysfunction?

Marc B. Garnick, MD
Hematology & Oncology
Injecting a drug isn't as easy as swallowing a pill, and the idea may be disconcerting at first, but men with erectile dysfunction (ED) who can't take medications such as Viagra, or who find such drugs ineffective, can often achieve an erection after injecting one or more prescription drugs into the penis. This therapy is more effective than phosphodiesterase type 5 (PDE5) inhibitors (drugs that augment cyclic GMP, a chemical that relaxes smooth muscle in the penis, improving blood flow during sexual stimulation) for men whose erectile dysfunction (ED) is related to radical prostatectomy (surgery for prostate cancer in which the prostate gland is removed).

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