May cause drowsiness—avoid driving/operating machinery. Use with caution in liver or kidney disease, asthma/COPD unless prescribed, peptic ulcer disease, glaucoma, prostate enlargement/urinary retention. Do not use with other cough/cold medicines without advice. Seek medical help if cough persists >7 days, high fever, shortness of breath, blood in sputum, or worsening symptoms.
