6 Questions
What is the physiologic mechanism of erection of the penis?
Release of nitric oxide in the corpus cavernosum
What is the role of nitric oxide in the corpus cavernosum during sexual stimulation?
Enhances smooth muscle relaxation
Which medication is contraindicated for concurrent use with nitrates, nitric oxide, or alpha-adrenergic blockers?
Tadalafil (Cialis)
What is the recommended dose and timing for sildenafil citrate (Viagra) for most patients?
50 mg taken 1 hour before sexual activity
Under what conditions should tadalafil (Cialis) not be used?
Recent history of stroke
What is the recommended dose and timing for vardenafil (Levitra) for most patients?
10 mg taken 24 hours before sexual activity
Test your knowledge on the physiologic mechanism of penile erection and drug interactions related to medications used for erectile dysfunction. Learn about the release of nitric oxide, smooth muscle relaxation, and potential side effects of these drugs.
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