PRECAUTIONS: Before taking montelukast, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies.Before using this drug, tell your doctor or pharmacist your medical history, especially of: liver disease, certain blood disorders (phenylketonuria).Use of the 4 milligram tablets is not recommended in children less than 2 years old. Use of the 5 milligram tablets is not recommended in children less than 6 years old.This medicine may contain aspartame. If you have phenylketonuria (PKU) or any other condition where you must restrict your intake of aspartame (or phenylalanine), consult your doctor or pharmacist regarding the safe use of this medicine.This medication should be used only when clearly needed during pregnancy. Discuss the risks and benefits with your doctor.It is not known whether this drug is excreted into breast milk. Consult your doctor before breast-feeding.
DRUG INTERACTIONS: Your doctor or pharmacist may already be aware of any possible drug interactions and may be monitoring you for them. Do not start, stop, or change the dosage of any medicine before checking with them first.Before using this medication, tell your doctor or pharmacist of all prescription and nonprescription/herbal products you may use, especially of: other asthma drugs, certain drugs which stimulate liver metabolism (e.g., phenytoin, phenobarbital, carbamazepine), rifamycin antibiotics (e.g., rifampin).This document does not contain all possible interactions. Therefore, before using this product, tell your doctor or pharmacist of all the products you use. Keep a list of all your medications with you, and share the list with your doctor and pharmacist.
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