Opioid Dependence

This research is being done to evaluate whether suvorexant may reduce the use of, subjective liking, and demand for various drugs.

This proposal is relevant to the 240,000 cancer survivors who continue to use opioids long after they have successfully completed treatment for cancer at the VHA, placing them at risk of opioid addiction and overdose, and other opioid-related problems. Yet, there are no programs at the VHA to help them find alternatives to opioids, nor evidence to inform the choice of interventions. This study will meet these needs by examining four interventions that are effective at reducing opioid use in patients with chronic musculoskeletal pain but have yet to be tested in cancer survivors on long term opioid therapy. The proposed work is relevant to the VHA Pain Office's mission to provide Veterans better pain management while limiting the risks of long-term opioid therapy and it aligns with VHA Research and Development's priority to examine clinical interventions for tapering opioids. Successful completion this project will keep VHA at the forefront of the battle against the opioid epidemic with a strategy that may be adapted to address the same needs in non-Veterans.

Patients with chronic pain are often prescribed long-term opioid therapy, despite the serious risks and growing concerns related to opioid use. The Toronto General Hospital has created the world's first multidisciplinary perioperative Transitional Pain Service Program (TPSP) aimed at reducing the incidence and severity of chronic post-surgical pain. The TPSP incorporates a variety of mechanisms and interventions to help patients manage pain and to wean off opioids. The approach consists of: pain education, Acceptance and Commitment Therapy (ACT), and an e-mobile self- management tool to help patients manage chronic pain more effectively. With the TPSP team, the investigators hope to continually assist patients to achieve a balance between the benefits and potential harms of opioid use to promote long-term health and well-being.

This first-in-human, randomized, double-blind, placebo-controlled, single ascending dose (SAD), phase I study is designed to assess the safety, tolerability and pharmacokinetics of VK4-116 in healthy volunteers in fasted and fed state.

Addictive full-agonist opioids, like oxycodone and hydrocodone, are often used to treat pain after surgery. However, these full-agonist opioids can be very addictive. After ankle fracture surgery, about 1 in 5 patients that did not take opioids before surgery become addicted to opioids after surgery. Buprenorphine is an opioid with unique properties that may offer a way to reduce the number of patients that become addicted to opioids after surgery. Buprenorphine has good analgesic (painkilling) effects. It is also thought to be less addictive and cause less of a high than full-agonist opioids, like oxycodone and hydrocodone. This project's goal is to determine if transdermal buprenorphine can safely and effectively control pain after ankle fracture surgery. This study will be a pilot study, which sets the stage for future studies that investigate whether buprenorphine can reduce the rate that patients become addicted to opioids after surgery. This study's multidisciplinary team will divide patients into two groups. Participants in one group will be treated with a 7-day transdermal buprenorphine patch (where the buprenorphine is slowly absorbed through the skin over 7 days). Participants in the other group will be treated with a placebo patch. A placebo has no drug in it, it just looks like the buprenorphine patch. Aside from the buprenorphine patch or placebo patch, both groups' pain management plans will be the same as if they were not in the study. Over the first week after surgery, the investigators will measure the amount of full-agonist opioids (for example, oxycodone or hydrocodone) that participants consume, participants' pain scores, the frequency of side effects related to opioids, and the number of calls and patient portal messages to the clinic for uncontrolled pain. The investigators will also assess whether participants are continuing to use opioids 3 months after surgery for pain related to their ankle fracture.

The goal of this pilot clinical trial is to learn if a community informed designed program of addiction counseling with coordinated community peer navigator for people with Opioid Use Disorder (OUD) and other medical conditions can improve engagement in primary care and retention on buprenorphine. The main questions it aims to answer are: * Does the addition of a counseling and peer referral interventions in addition to usual primary care with low-threshold buprenorphine increase retention on medications for opioid use disorder? * Does the addition of counseling and peer referral intervention in addition to usual primary care with low-threshold buprenorphine increase engagement in primary care? Researchers will compare the MOUD "Plus" intervention compared to primary care treatment as usual low-threshold buprenorphine prescribing practice to see if MOUD "Plus" improves retention and engagement. Participants will upon screening and enrollment: * Meet with prescribers who will determine dose of buprenorphine and assess other medical issues as per treatment as usual with visits every 2-4 weeks * Meet with the integrated addictions counselor to develop rapport and support around clinic engagement, brief counseling intervention, and coordination of care in support of their MOUD * Be referred to a community based peer who meets with participants outside the clinic for support and advocacy for patient directed recovery goals * Meet with the research coordinator at 2, 3, and 6 months to complete follow-up surveys about their care and experiences

This is an open-label pilot trial to assess the safety and feasibility of a novel 8-week psilocybin-assisted psychotherapy intervention to facilitate successful tapering/discontinuation of opioid pain medication in adult patients receiving long-term opioid therapy for chronic pain. Participation will last approximately 8 months and includes one or two psilocybin-assisted therapy sessions. The study will evaluate the incidence and severity of adverse events during and after treatment, the number of participants who drop out of the study for intervention-related reasons, and the self-reported benefits and harms of the intervention.

This project examines functional connectivity patterns associated with subsequent relapse to illicit opioids during treatment for OUD.

The goal of the proposed study is to generate evidence on the acceptability, feasibility, effectiveness, and cost-effectiveness of introducing long-acting depot buprenorphine (LADB) as an additional option for the treatment of opioid dependence in low- and middle-income countries (LMIC) among people who inject drugs (PWID) with opioid dependence. The study results will be used to inform global and local policies and guidelines to introduce LADB as a treatment option and to advocate for access to a sustainable supply of LADB in LMIC.

The Houston Emergency Response Opioid Engagement System for Youths and Adolescents (Young HEROES) is a community-based research program integrating assertive outreach, medication for opioid use disorder (MOUD), behavioral counseling, and peer recovery support. The objective is to compare differences in engagement and retention in treatment for individuals with opioid use disorder. The investigators also intend to understand the prevalence of opioid overdoses and OUD among youth in Houston.

A Clinical Trial to Assess Pharmacokinetic Profiles, Safety and Tolerability of IVL3004 and IVL4002 in Healthy Male Subjects.