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  • Title: Testim 1% testosterone gel for the treatment of male hypogonadism.
    Author: Bouloux P.
    Journal: Clin Ther; 2005 Mar; 27(3):286-98. PubMed ID: 15878382.
    Abstract:
    OBJECTIVE: The aim of this work was to review the pharmacokinetic and clinical profile of Testim (Auxilium Pharmaceuticals, Norristown, Pennsylvania) 1% gel formulation of testosterone for the treatment of male hypogonadism. METHODS: An English-language search of the medical literature was conducted using PubMed (1998-December 2004) and EMBASE (1998-December 2004). Search terms included ag(e)ing male, male hypogonadism, late-onset hypogonadism, testosterone, testosterone deficiency, testosterone therapy, testosterone replacement therapy, androgen therapy, testosterone gel, and Testim. Bibliographies of retrieved articles were also reviewed. RESULTS: Five published clinical studies were reviewed. Testim 50 mg showed clear pharmacokinetic differences from AndroGel (known as Testogel in Europe; Unimed Pharmaceuticals, Inc., and Solvay Pharmaceuticals, Inc., Marietta, Georgia) 1% testosterone gel 50 mg, with increases of 30% (90% CI, 8%-57%) and 47% (90% CI, 20%-79%) versus AndroGel, respectively, in AUC(0-24h) for total serum testosterone and free testosterone. In a 30-day study of 638 men with hypogonadism, sexual desire scores and sexual motivation scores increased after Testim treatment at weeks 1, 2, 3, and 4 (each, P < 0.001). During 12 months of treatment with Testim 50 or 100 mg in 371 men with hypogonadism, total serum testosterone levels were raised to and maintained within the normal adult range, lean body mass increased by 2.2 kg (P < 0.001), fat mass fell by 2.1% (P < 0.001), and bone mineral density increased by 2.58% (P < 0.001). Mean scores for sexual desire, performance, motivation, and spontaneous erections were all significantly higher (all, P < 0.001) than at baseline for all time points during 12-month studies of Testim. In 2 studies comparing Testim with different testosterone patches, treatment with the gel resulted in 10-fold fewer application-site reactions than either patch. CONCLUSIONS: In men with hypogonadism, Testim gel raised and maintained serum testosterone levels to within the normal adult range, alleviated signs and symptoms associated with hypogonadism, and was well tolerated.
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