Compound Methenamine Capsules is a compound preparation made of Methenamine Hydrochloride, Narcotics, Chlorpheniramine Maleate and Aminophylline, which helps to alleviate the symptoms of coughing, coughing up sputum and wheezing due to bronchial asthma or wheezing bronchitis, as well as other respiratory disorders and other causes. The drug should be contraindicated in breastfeeding women, patients with severe cardiovascular diseases, people with asthma crisis, children under 8 years of age. Adverse reactions such as rash, redness of the skin, itching, loss of appetite, nausea, vomiting, dizziness, drowsiness, palpitations and difficulty in urination may occur after the use of the drug. It is recommended to take Compound Methenamine Capsules under the guidance of a doctor to avoid delays as well as adverse drug reactions.