Increasing Heroin‐Methamphetamine (Goofball) Use and Related Morbidity Among Seattle Area People Who Inject Drugs

Abstract

Background and Objectives Methamphetamine use is increasing in the United States, potentially including the simultaneous injection of methamphetamine with heroin (goofball). We compared demographic, behavioral, contextual, and health factors among people who inject drugs (PWID) in the Seattle area and who reported that their main drug was goofball, heroin, or methamphetamine. Methods We used data from 2017 and 2019 cross‐sectional surveys of clients at Public Health—Seattle & King County's syringe services program (N = 792). Results Among PWID participants, 55.3% reported using goofball in the last 3 months, and the proportion reporting goofball as their main drug doubled between 2017 (10.3%) and 2019 (20.1%, P < .001). The goofball group had the highest proportions of people who were aged less than 30, women, homeless or unstably housed, and recently incarcerated. PWID whose main drug was goofball reported considerable health risks and morbidity. Witnessing an opioid overdose was most commonly reported by participants whose main drug was goofball. This group also reported naloxone possession and use in an overdose situation more than other participants. The majority of participants were interested in reducing or stopping their opioid and stimulant use. Discussion and Conclusions Among PWID, using goofball as a main drug doubled over 2 years and was characterized by contextual and individual factors that increase the risk of morbidity and mortality. Scientific Significance This is the first study to characterize goofball use as a main drug. Clinical and public health efforts to diminish morbidity associated with opioid use need to integrate interventions that address the co‐use of methamphetamine. (Am J Addict 2020;00:00–00)

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