When taking drugs should be appropriate to drink water, do not dry swallow tablets, so as not to attach the drug to the esophageal wall, causing damage to the mucosa, and even cause ulcers bleeding. When taking certain drugs, drink more water. For drugs with small solubility and large doses, increasing the amount of water can increase the speed of dissolution and the amount of the drug, thus enhancing its effectiveness. For irritating drugs, if there is not enough water in the stomach to dilute them, it will cause excessive local drug concentration and increase irritation, leading to stomach ulcers. When taking the following drugs, it is advisable to drink more water. 1, the treatment of urinary tract infection drugs can treat urinary tract infection many drugs, commonly used oral antibiotics are sulfonamides, quinolones (fluazinic acid, haloperidol, ofloxacin, levofloxacin, etc.), cephalosporins (cefaclor), penicillin (ampicillin, hydroxybenzyl penicillin), etc.. 2, antipyretic drugs The antipyretic drugs should drink more water, on the one hand, help the body to urinate a lot, in order to discharge the toxins in the body; on the other hand, antipyretic drugs will make the patient sweat a lot, a lot of water can be timely replenishment of water in the body. 3, aminophylline or asthma drugs These drugs can increase renal blood flow, with diuretic effect, easy to cause dehydration, so that patients appear dry mouth, polyuria or palpitations. At the same time, the blood volume of asthmatics tends to be low, so drinking more water can avoid dehydration. 4.Biliary drugs Biliary drugs can promote the secretion and discharge of bile and mechanically flush the bile duct, which helps to discharge the sediment-like stones in the bile duct and the stones left after gallstone surgery. Phenylpropanol, hydroxymethyl coumarin and goose deoxycholic acid in cholagogic drugs can cause overproduction of bile and diarrhea. Therefore, you should drink as much water as possible during taking cholagogic drugs to avoid dehydration caused by diarrhea. 5.Biphosphonates Alendronate, pamidronate, clodronate and other drugs used in the treatment of hypercalcemia can cause electrolyte disorders and water loss, so attention should be paid to replenish water. 6.Anti-gout drugs When applying anti-gout drugs such as benzbromarone or allopurinol, drink more water and keep the daily urine volume >2000 ml. 7.Anti-urinary stone drugs After taking Chinese patent medicine lithotripsy soup and lithotripsy punch, drink more water and keep the daily urine volume at 2500-3000 ml to flush the urethra and dilute the urine, reduce the concentration of salts in the urine and reduce the chance of urine salt precipitation. 8, sulfonamides Sulfonamides are mainly excreted by the kidneys, and the high concentration in the urine can form crystalline precipitates, causing crystalluria, hematuria and urinary closure. After taking sulfadiazine, sulfamethoxazole, compound sulfamethoxazole and other sulfonamides, it is advisable to drink a lot of water and add sodium bicarbonate to alkalize the urine and promote the solubility of crystals.