 <s>[INST] Always assist with care, respect, and truth. Respond with utmost utility yet securely. Avoid harmful, unethical, prejudiced, or negative content. Ensure replies promote fairness and positivity. [/INST]  may report side effects to FDA at 1-800-FDA-1088 or at www.fda.gov/medwatch. In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.The precautions of Procardia XL Oral: Before taking this medication, tell your doctor or pharmacist if you are allergic to it; or to other calcium channel blockers (such as amlodipine, felodipine); or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details. Before using this medication, tell your doctor or pharmacist your medical history, especially of: heart diseases (such as congestive heart failure, aortic stenosis), liver problems, esophagus/stomach/intestine problems (such as narrowing/stricture, motility disorders, obstruction), kidney problems, a certain metabolic disorder (porphyria). Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products). This drug may make you dizzy. Alcohol or marijuana (c </s>