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Viagra, methamphetamine, and HIV risk: results from a probability sample of MSM, San Francisco.

Spindler HH, Scheer S, Chen SY, Klausner JD, Katz MH, Valleroy LA, Schwarcz SK

San Francisco Department of Public Health, San Francisco, California, USA. hilary.spindler@gmail.com

OBJECTIVES: To determine the prevalence and factors of Viagra use in combination with crystal methamphetamine and its association with HIV risk behavior in a probability sample of men who have sex with men (MSM). STUDY DESIGN: A cross-sectional, random-digit dial telephone survey of MSM in San Francisco conducted between June 2002 and January 2003. RESULTS: Of the 1976 MSM, 13.5% used Viagra alone, 7.1% used methamphetamine without Viagra, 9.6% used Viagra with a mood-altering substance (excluding methamphetamine), and 5.1% used Viagra with methamphetamine. Of the MSM using Viagra with methamphetamine, 57% were HIV-infected and 24% of these men reported serodiscordant unprotected insertive intercourse. Viagra used with methamphetamine was independently associated with a higher risk of serodiscordant unprotected insertive intercourse, serodiscordant unprotected receptive intercourse, and a recent diagnosis of a sexually transmitted disease. CONCLUSION: MSM who use Viagra with crystal methamphetamine have high prevalence rates of HIV and engage in HIV risk behaviors.

Published 16 August 2007 in Sex Transm Dis, 34(8): 586-91.
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