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What are PDE-5 inhibitors?

ANSWER

These drugs encourage erections by increasing blood flow to the penis. They are used to treat erectile dysfunction (ED).

Examples include:

  • avanafil (Stendra)
  • sildenafil (Viagra) 
  • tadalafil (Cialis)
  • vardenafil (Levitra)

SOURCES:

Medscape: "Testosterone Added to Standard Treatment of Erectile Dysfunction," "Testosterone and Erection Physiology."

Urology Care Foundation: "Low Testosterone (Hypogonadism)."

Rajfer, J. , Spring 2000. Reviews in Urology

ChoosingWisely.org: "Treatment for Erection Problems."

University of California, San Francisco: "Erectile Dysfunction (ED)."

Liao, M. , June 21, 2012. PLoS One

Isidori, A. , October 2005. Clinical Endocrinology (Oxford)

University of California, Los Angeles: "Erectile Dysfunction",

Rhoden, E. , Jan. 29, 2004. New England Journal of Medicine

Reviewed by Carol DerSarkissian on August 07, 2019

SOURCES:

Medscape: "Testosterone Added to Standard Treatment of Erectile Dysfunction," "Testosterone and Erection Physiology."

Urology Care Foundation: "Low Testosterone (Hypogonadism)."

Rajfer, J. , Spring 2000. Reviews in Urology

ChoosingWisely.org: "Treatment for Erection Problems."

University of California, San Francisco: "Erectile Dysfunction (ED)."

Liao, M. , June 21, 2012. PLoS One

Isidori, A. , October 2005. Clinical Endocrinology (Oxford)

University of California, Los Angeles: "Erectile Dysfunction",

Rhoden, E. , Jan. 29, 2004. New England Journal of Medicine

Reviewed by Carol DerSarkissian on August 07, 2019

NEXT QUESTION:

What are the side effects of testosterone replacement therapy (TRT) for erectile dysfunction (ED)?

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