How effective is Viadur?
In clinical studies, after surgical insertion of one Viadur implant, testosterone concentrations fell to castrate levels within four weeks in 99% of patients following the expected initial increase in serum testosterone. The one remaining patient achieved continuous testosterone reduction after 28 weeks of treatment. Once reduced, testosterone remained well below the castrate threshold for the duration of treatment. In addition, no patient had a clinically significant increase in testosterone levels when the original implant was removed and a new one was inserted.
