Summary
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▴ Nightly application of testosterone transdermal (TTD) system to nonscrotal sites in men with hypogonadism results in a 24-hour serum testosterone concentration profile which mimics the circadian pattern observed in healthy young men.
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▴ The system also normalises dihydrotestosterone/testosterone and estradiol/testosterone ratios and reduces luteinising hormone levels towards the normal range.
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▴ A multicentre, open-label study demonstrated that nocturnal erectile response and overall sexual function improved during 12 months’ treatment with the TTD system (5 mg/day) in men with hypogonadism. Individual variables of sexual desire, arousal, frequency of sexual activity, orgasm and satisfaction also improved.
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▴ The TTD system is well tolerated, with application site reactions such as pruritus, burn-like blisters and erythema being the most commonly reported events.
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▴ Prostate-specific antigen levels and prostate volume remain in the normal range during long term treatment.
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McClellan, K.J., Goa, K.L. Transdermal Testosterone. Drugs 55, 253–258 (1998). https://doi.org/10.2165/00003495-199855020-00006
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DOI: https://doi.org/10.2165/00003495-199855020-00006