Prevention/Reduction of ASRs and PTSD to Sustain Civilian Performance With Sublingual Cyclobenzaprine HCl (TNX-102 SL) - (Optimizing Acute Stress Reaction Interventions With TNX-102 SL - OASIS)
This study will examine the safety and efficacy of TNX-102 SL to reduce ASR symptoms and behavioral changes among patients presenting to the emergency department (ED) after motor vehicle collision (MVC). Specifically, the investigators will perform the Optimizing Acute Stress reaction Interventions with TNX-102 SL (OASIS) Trial, a double-blind placebo-controlled randomized clinical trial (RCT) to determine if TNX-102 SL initiated in the ED in the hours after MVC to high risk individuals, treats/reduces acute stress reaction (ASR)/acute stress disorder (ASD) symptoms (primary outcome), improves neurocognitive function, and prevents/reduces posttraumatic stress (PTS) symptoms (secondary outcomes) long term. 180 participants will be randomized, receive study drug in ED and be discharged with a 2-week drug supply. Prior to initial dose of study drug administration, and during the hours, days, and weeks after participants will receive serial longitudinal assessments of psychological and somatic symptoms, neurocognitive function, and adverse events.
• ≥ 18 years and ≤ 55 years of age
• Presentation to ED within 72 hours of MVC
• Anticipated to be discharged home from the ED
• Stated willingness to comply with all study procedures and availability for the duration of the study
• Consent to receive unencrypted communications
• Has a smartphone with continuous service for ≥ 1 year
• Has a personal email address they regularly access
• Able to speak and read English
• Pain severity in the ED ≥ 4 (0-10 numeric rating scale)
⁃ People who are not of childbearing potential (e.g., hysterectomy, bilateral oophorectomy, or confirmed postmenopausal for at least last 12 consecutive months)
⁃ People with the capacity to conceive a pregnancy must agree to employ a highly effective form of birth control throughout the first 21 days of study participation (e.g., oral, injected, transdermal, or implanted hormonal methods of contraception for at least one full menstrual cycle prior to study drug administration; placement of an intrauterine device (IUD) or intrauterine system (IUS); or double barrier methods such as condoms and diaphragms)