About this trial
The goal of this clinical trial is to learn if a single dose of psilocybin (5mg Vs 10mg Vs 25mg) alongside psychotherapy is safe and can help treat treatment resistant depression (TRD) with co-occurring substance use disorder (SUD) in veterans and first responders. We seek to answer:
* Whether 5mgs, 10mgs and 25mgs of psilocybin are safe in individuals with co-occurring TRD and SUD * Whether psilocybin assisted psychotherapy will reduce substance use severity and depression symptoms * What neurobiological processes are associated with the effects of psilocybin assisted psychotherapy.
The researchers will compare the effects of a single dose of psilocybin (either 5mgs or 10mgs or 25mg) alongside psychotherapy on substance use severity and depression symptoms over six weeks in veterans and first responders with TRD and co-occurring SUD.
In this 14-week study, participants will:
* Visit the clinic for two intake sessions * Complete seven psychotherapy sessions. This will include three sessions before psilocybin administration, an 8 to 10 hour dosing session, and three sessions following psilocybin administration * Complete short, repeated daily assessments for six weeks, in total, before and after psilocybin administration * Complete two brain scans before and after psilocybin administration
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
None
Disqualifiers
None
Trial design
Parallel
Treatments tested in this trial
Psilocybin
DrugParticipants will be randomly administered a single dose of either 5mg or 10mg or 25mg psilocybin
Treatment groups
Trial outcomes
Primary outcomes
percentage number of participants with Adverse Events (AEs)
AEs that occur after administration of the single psilocybin dose or worsen from a pre-treatment state.
Change in % number of positive urines
urine toxicology screens for alcohol and substance use will be collected
Change in % number of days spent using substances
Self reports of alcohol and substance use, using the timeline followback (TLFB) and brief ecological momentary assessment (EMA) items
Change in severity of depression symptoms
Self reports of depressive symptomatology, using the Quick Inventory of Depression Symptoms-Self-Report (QIDS-SR) and brief EMA items using the Positive and Negative Affect Schedule (PANAS)
Secondary outcomes
Change in amount of substance consumed per occasion
Self reports of alcohol and substance use, using the TLFB and brief EMA items
Change in number of binge episodes
Self reports of alcohol and substance use, using the TLFB and brief EMA items
Change in craving
Various standardized craving scales will be used to collect self-report craving data in addition to brief EMA items
Change in anxiety
The State-Trait Anxiety Inventory (STAI) will be used to collect self-report anxiety data in addition to brief momentary assessment items
Sponsors and contacts
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This trial is not recruiting at the moment. You can still explore other options: