Furosemide tablets drug instructions do not specify when to take the best, usually before or after meals can be taken. Patients please according to their own situation, under the guidance of the doctor reasonable use of drugs. Furosemide tablets are mainly used for the treatment of edematous diseases, hypertension, prevention of acute renal failure, hyperkalemia and hypercalcemia, dilutional hyponatremia, antidiuretic hormone hypersecretion, acute drug toxicity such as barbiturate poisoning. Common adverse reactions to furosemide tablets are related to water and electrolyte disturbances, especially with prolonged heavy dosing, including postural hypotension, shock, hypokalemia, hypochloremia, hypochloremic alkalosis, hyponatremia, hypocalcemia, thirst, malaise, muscular aches and pains, and cardiac arrhythmias. Rarely, allergic reactions, blurred vision, dizziness, headache, poor sodium, nausea, vomiting, abdominal pain and other symptoms. The contraindications of furosemide tablets are not clear, but patients with anuria or severe renal impairment, diabetes mellitus, hyperuricemia or gout disease, severe hepatic impairment, acute myocardial infarction, pancreatitis, hypokalemic tendency, lupus erythematosus, prostate hypertrophy should be used with caution, pregnant women, especially in the first 3 months of pregnancy should avoid the use of medication, and breastfeeding women should be used with caution. If you need to use furosemide tablets, it is recommended that you consult a professional doctor and follow the doctor’s instructions to standardize the use of medication.