Urology
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To evaluate whether combination therapy with testosterone gel (T-gel) and sildenafil citrate is effective in achieving adequate potency in subjects with low-normal serum testosterone levels in whom sildenafil alone has failed. ⋯ The results of this study support the use of T-gel with sildenafil citrate in men with low-normal serum testosterone levels in whom sildenafil alone fails. It also underscores the numbers of men with low to low-normal testosterone levels who would benefit from testosterone screening when evaluated for erectile dysfunction.