Trimethoprim maleate belongs to the gastrointestinal antispasmodic drugs, has a strong relaxation effect on the smooth muscle of the gastrointestinal tract, can regulate the peristalsis of the digestive tract and promote gastric emptying. It can also be used for the improvement of symptoms such as loss of appetite, nausea, vomiting and constipation caused by gastrointestinal motility dysfunction. Symptoms such as diarrhea, thirst, dizziness and headache may occur after taking the drug. If the symptoms are mild, they usually do not require special treatment and can usually return to normal in about 1-2 days after continuing the drug or stopping the drug. If there is a mild allergic reaction such as rash, itching, etc., antihistamines such as chlorpheniramine maleate can be taken for relief. In case of severe allergic reactions such as swelling of the face, lips and tongue, immediate medical attention is required. People with weakened liver function and low tolerance to drugs are prone to adverse reactions, and pregnant and lactating women need to use the drug with caution. The drug contains sucrose and should be taken by diabetic patients on medical advice. Children should use the drug under the supervision of a medical professional and an adult. Trimethoprim maleate is a prescription drug and is recommended to be taken on medical advice.