The Straits Times
Published on Nov 20, 2012

Testosterone doesn't make Viagra work better: study


NEW YORK (REUTERS) - Using a testosterone gel in addition to Viagra doesn't make the little blue pill work any better, according to a US study.

Studies have suggested that about one-quarter to one-third of men with erectile dysfunction, or ED, also have low testosterone, and the authors of the study - which appeared in the Annals of Internal Medicine - say that a starting course of sildenafil citrate, marketed as Viagra, helped improve sexual function for men with both conditions.

But adding testosterone, typically prescribed to men who have both low testosterone levels and symptoms such as little interest in sex or low muscle and bone mass, on top of Viagra, doesn't provide any added sexual benefits, said lead author Dr Matthew Spitzer, from the Boston University School of Medicine.

"Sildenafil plus testosterone was not superior to sildenafil plus placebo in improving erectile function in men with erectile dysfunction and low testosterone levels," Dr Spitzer and his colleagues wrote.