Psilocybin for Opioid Use Disorder in Patients on Methadone Maintenance With Ongoing Opioid Use
Opioid Use Disorder
About this trial
This is an interventional treatment trial for Opioid Use Disorder
Eligibility Criteria
Inclusion Criteria:
- Age 21-70 years
- Have OUD
- Enrolled in a methadone maintenance program for at least 3 months
- Urine toxicology positive for methadone
- Urine toxicology positive for an additional opioid
- Access to stable housing
- Read, write, and speak English
- Be judged by study team clinicians to be at low risk for suicidality
- Have limited lifetime use of classic psychedelics (no use in the past 5 years; total classic psychedelic use less than 20 times)
- Are local to the Baltimore area
Exclusion Criteria:
- Women who are pregnant, nursing, or not practicing an effective means of birth control
- Cardiovascular conditions: hypertension with resting blood pressure systolic >140 or diastolic >90, angina, a clinically significant ECG abnormality (e.g., atrial fibrillation, corrected QT interval > 450), transient ischemic attack in the last 6 months stroke, peripheral or pulmonary vascular disease
- Epilepsy
- Insulin-dependent diabetes; if taking oral hypoglycemic agent, then no history of hypoglycemia
- Currently taking a prescribed psychoactive medication on a daily basis (except methadone)
Currently taking on a daily basis any medications (including herbal substances and supplements) with a central nervous system effect on serotonin, including serotonin-reuptake inhibitors and monoamine oxidase inhibitors.
o For individuals who have intermittent or as needed use of such medications, psilocybin sessions will not be conducted until at least 5 half-lives of the agent have elapsed after the last dose.
- Currently taking efavirenz, Acetaldehyde dehydrogenase inhibitors such as disulfiram (Antabuse), Alcohol dehydrogenase inhibitors, or Uridine 5'-diphospho-glucuronosyltransferase Family 1 Member A9 (UGT1A9) inhibitors or UGT1A10 inhibitors such as phenytoin, regorafenib, eltrombopag.
- Have a seizure disorder, multiple sclerosis, history of significant head trauma, central nervous system tumor, movement disorders or any neurodegenerative condition.
- Morbidly obese (>100 lbs above idea body weight, or BMI >=40, or BMI >=35 with high blood pressure or diabetes)
- Body weight < 45kg
- Recent (within past 12 months) or extensive history of classic psychedelic use (>19 lifetime uses).
- Physiological dependence on benzodiazepines or alcohol
- Abnormal screening labs: values for hemoglobin, white blood count, creatinine, potassium, and bilirubin outside of the normal lab reference rage. Transaminases greater than x2 the upper limit of normal lab reference range.
Sites / Locations
Arms of the Study
Arm 1
Arm 2
Experimental
Placebo Comparator
Psilocybin
Placebo
Participants will be administered 40mg of psilocybin in a clinical setting. Psilocybin is administered orally as a capsule and taken with water. At 3 months, half will be randomized to receive a blinded dose of psilocybin 40mg and half a blinded dose of placebo.
Participants will be administered placebo in a clinical setting. Placebo is administered orally as a capsule taken with water. At 3 months, participants will receive a blinded dose of psilocybin 40mg.