XG005 for Pain Control in Subjects Undergoing Bunionectomy

Main inclusion criteria: * Scheduled to undergo unilateral first metatarsal bunionectomy * Have negative urine drug screen * Non-pregnant, non-lactating Main exclusion criteria: * Medical condition or history that in the investigator's opinion could adversely impact the subject's participation or safety * Use of disallowed medications (e.g. pain medication, CNS active drugs such as benzodiazepines, tricyclic antidepressants, Serotonin, and norepinephrine reuptake inhibitors (SNRIs), selective serotonin reuptake inhibitors (SSRIs), or any other serotonergic medications, parenteral or oral corticosteroids) * Antihypertensive agent or diabetic regimen at a dose that has not been stable for at least 30 days * Digoxin, warfarin lithium, theophylline preparations, aminoglycosides, and all antiarrhythmics * Monoamine oxidase inhibitors (MAOIs) * Positive HbsAg and/or anti-HBc but negative anti-HBs * HIV infection * History of illicit drug use * History of opioid dependence * History of NSAID-induced bronchospasm or presence of nasal polyps, history of asthma or chronic rhinitis * Significant history of allergic reactions or known intolerance to naproxen, pregabalin or any gabapentinoid, or to any rescue medication used in the study, or any medication used in the surgical and anesthetic protocol. * Presence of severe depression as indicated by Patient Health Questionnaire (PHQ 9) total score of ≥20 or item 9 score \>0 * Presence of severe anxiety as indicated by General Anxiety Di…