BACKGROUND: Chronic drug abuse and sexual dysfunction specifically erectile 
dysfunction may lead drug abusers to seek over-the-counter or non-prescription 
medications, out of which Sildenafil citrate, sold as the trade name of Viagra® 
can be considered as a prime and important treatment. Therefore, the research 
purpose was to draw a comparison and review the role of methamphetamine abuse 
and sildenafil use in increasing the likelihood of high-risk sexual behaviors 
(both concomitant and non-concomitant use).
METHODS: Hence, a total of 40 patients diagnosed with methamphetamine abuse were 
recruited through the administration of structured clinical interview for DSM-IV 
(Diagnostic and Statistical Manual of Mental Disorders, 4th Edition), through 
purposive sampling and subsequent to being qualified in accordance with the 
selection criteria by psychologists and general practitioners. All the 40 drug 
abusers (20 methamphetamine abusers with concomitant use of Aphrodisiac drugs 
(sexual stimulant pills) and 20 methamphetamine abusers) described their sexual 
risk behaviors subsequent to the drug use.
FINDINGS: Supported the between-group difference that is to say that, the group 
with concomitant methamphetamine abuse differed significantly in all the items 
when compared with the control group. However, this group scored lower on the 
item of sexual intercourse with drug addicted prostitutes using condom and both 
groups demonstrated high pick on this item.
CONCLUSION: Overall, the concomitant methamphetamine chronic abuse with sexual 
stimulant drugs generates Aphrodisiac drugs impulses and is found to be related 
to higher frequencies of sexual risk behaviors and sexual intercourse with 
addicted prostitutes.