 <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]  calcium or magnesium sulfate received through a vein, digoxin, fentanyl, melatonin. Other medications can affect the removal of nifedipine from your body, which may affect how nifedipine works. Examples include apalutamide, cimetidine, enzalutamide, mitotane, quinupristin/dalfopristin, St. John's wort, rifamycins (such as rifabutin, rifampin), drugs used to treat seizures (such as carbamazepine, phenytoin), among others. Some products have ingredients that could raise your heart rate or blood pressure. Tell your pharmacist what products you are using, and ask how to use them safely (especially cough-and-cold products, diet aids, or NSAIDs such as ibuprofen/naproxen). Does Procardia XL interact with other drugs you are taking? Enter your medication into the WebMD interaction checker Check InteractionThe overdose of Procardia XL Oral: If someone has overdosed and has serious symptoms such as passing out or trouble breathing, call 911. Otherwise, call a poison control center right away. US residents can call their local poison control </s>