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


METHODS
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.


CONCLUSIONS
MSM who use Viagra with crystal methamphetamine have high prevalence rates of HIV and engage in HIV risk behaviors.
Spindler
Hilary H
HH
San Francisco Department of Public Health, San Francisco, California, USA. hilary.spindler@gmail.com
Scheer
Susan
S
Chen
Sanny Y
SY
Klausner
Jeffrey D
JD
Katz
Mitchell H
MH
Valleroy
Linda A
LA
Schwarcz
Sandra K
SK
D000328:Adult; D015658:HIV Infections / Q000453:epidemiology* / Q000209:etiology / Q000517:prevention & control*; D018451:Homosexuality, Male; D006801:Humans; D008297:Male; D008694:Methamphetamine; D008875:Middle Aged; D010879:Piperazines; D015995:Prevalence; D011687:Purines; D012307:Risk Factors; D012309:Risk-Taking; D012494:Sampling Studies; D012495:San Francisco / Q000453:epidemiology; D000068677:Sildenafil Citrate; D013450:Sulfones
D010879:Piperazines; D011687:Purines; D013450:Sulfones; D008694:Methamphetamine; D000068677:Sildenafil Citrate