Considering the patient's current medication regimen for chronic pain and migraines, which mechanism best explains the role of CYP2D6 in the effectiveness of their treatment?
CYP2D6 is responsible for the metabolism of acetaminophen, preventing hepatotoxicity. CYP2D6 metabolizes hydrocodone to its active form, enhancing analgesic efficacy. CYP2D6 is involved in the metabolism of NSAIDs, increasing their anti-inflammatory action. CYP2D6 converts oxycodone into an inactive metabolite, reducing side effects.