Resumen
Background: Little is known about the extent and pattern of use of erectile dysfunction medications (EDM) (Viagra®, Cialis®, Levitra®) by MSM in Spain. Objective: To examine the relationships between EDM, recreational drugs, sexual risk behaviour, and STI in MSM. Methods: The European MSM Internet Survey (EMIS) was implemented in 2010 in 38 European countries on websites for MSM and collected data on socio-demographics, drugs use, sexual behaviour, and other variables. A logistic regression analysis was conducted to assess variables associated with EDM use in the previous 12 months. Results: A total of 13,111 respondents living in Spain completed the questionnaire. Thirteen percent of MSM reported using EDM. Users were more likely to: be 25-39 years old (aOR= 3.5, 95%CI: 2.6-4.7) and =40 years old (aOR=14.4, CI: 10.7-19.3); report drug use in the previous 12 months: ecstasy/MDMA (aOR=1.3, CI: 1.1-1.6), cocaine (aOR= 1.4, CI: 1.2-1.7), poppers (aOR=1.6, CI: 1.4-1.9), mephedrone (aOR= 1.7, CI: 1.1-2.6), and GHB (aOR=2.9, CI: 2.3-3.8); have unprotected anal intercourse with a non-steady partner (aOR=1.3, CI: 1.1-1.5); visit a sex-focused venue: public sex venue (aOR= 1.2, CI: 1.1-1.4), private sex venue (aOR=1.4, CI: 1.2-1.7), and sauna (aOR=1.4, CI: 1.2-1.7); or having been diagnosed with gonorrhoea in the previous 12 months (aOR=1.5, CI: 1.1-2). Conclusions: The use of EDM is associated with the use of many drugs (some of which interact dangerously with EDM), attendance at sex-focused venues (that provide opportunities for multiple sexual partners) and having sexual risk behaviours which expose MSM to STI acquisition.