Prescription drug use and misuse in a cohort of people who inject drugs (PWID) in Baltimore.

BACKGROUND

Prescription drug misuse and its consequences (e.g., overdose) are a major public health concern. While national focus has been on opioids, misuse of sedatives/tranquilizers also occurs. Here we describe the use, correlates, and sources of prescription drugs in a community-based cohort of people who inject drugs (PWID).

METHODS

We included participants of the AIDS Linked to the IntraVenous Experience (ALIVE) study in follow-up in 2014. We defined prescription drug use as use of opioids or sedatives/tranquilizers considering both medical "prescribed by a doctor" and non-medical sources "obtained from the street/friend/relative." Correlates were evaluated separately for opioids and sedatives/tranquilizers using logistic regression and included socioeconomic factors, health conditions, substance use, and health care access.

RESULTS

823 predominantly African-American (90.6%) and male (66.3%) ALIVE participants with a median age of 55 were included. Prevalence of prescription opioid and sedative/tranquilizer use was 25.3% and 16.3% respectively. While the majority (70%) obtained prescription drugs exclusively through medical sources, the 30% who reported any non-medical source were also more likely to use other substances by injection and non-injection routes. PWID reporting prescription drug use (from medical and non-medical sources) were significantly more likely to report other substance use, mental health disorder, and recent contact with health care providers or detoxification facilities.

CONCLUSIONS

Prescription drug use was highly prevalent among PWID. While it is difficult to distinguish medically indicated from non-medical use, high levels of prescription drug use in conjunction with other drugs and alcohol heightens the risk for drug overdose and other adverse consequences.