 <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]  any medicines without your doctor's approval. Some drugs that may interact with this product include: other decongestants (taken by mouth or sprayed into the nose), tricyclic antidepressants (such as nortriptyline, amitriptyline). Taking MAO inhibitors with this medication may cause a serious (possibly fatal) drug interaction. Avoid taking MAO inhibitors (isocarboxazid, linezolid, metaxalone, methylene blue, moclobemide, phenelzine, procarbazine, rasagiline, safinamide, selegiline, tranylcypromine) during treatment with this medication. Most MAO inhibitors should also not be taken for two weeks before treatment with this medication. Ask your doctor when to start or stop taking this medication. Pseudoephedrine may decrease the effectiveness of some blood pressure medications (such as beta blockers, guanethidine, methyldopa, mecamylamine). 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 or diet aids). Pseudoephedrine and guaif </s>