Skin and salivary gland malignancies
High daily opioid use (defined as 30 mg oral morphine equivalent dose or higher) for more than 7 days at time of enrollment
Concurrent second active malignancy
Pregnant or lactating women
Psychological disorder requiring pharmacologic treatment
Regular systemic steroid use
Regular anticonvulsant, neuropathic or antidepressant use
Renal Impairment
Defined as creatinine clearance < 60 mL/min
Liver Dysfunction
Defined as total bilirubin > 34.2 μmol/L
Documented true allergy or contraindications to Acetaminophen, NSAIDs, Pregabalin, pantoprazole or opioids
History of upper gastrointestinal bleed
Known bleeding disorder
History of or current substance use disorder
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