Study Comparing Dynastat and Parestat Pain Relief Medications for Patients After Breast Surgery

Inclusion Criteria: Patients aged 18 years or older. Patients scheduled for elective excision biopsy of the breast. Patients with an American Society of Anesthesiologists (ASA) physical status classification of I or II. Patients who can understand and provide written informed consent. Exclusion Criteria: Patients with a known allergy or contraindication to parecoxib or any of its excipients. Patients with a history of severe gastrointestinal bleeding, ulceration, or perforation. Patients with a history of significant cardiovascular disease (e.g., unstable angina, recent myocardial infarction, stroke). Patients with uncontrolled hypertension. Patients with severe renal impairment (creatinine clearance \< 30 mL/min). Patients with severe hepatic impairment (Child-Pugh Class C). Patients who are pregnant or breastfeeding. Patients taking medications that are contraindicated with parecoxib (refer to drug interaction section). Patients with a history of bronchospasm, acute rhinitis, nasal polyps, angioedema, urticaria, or other allergic-type reactions after taking aspirin or other NSAIDs.