@李女士：我去年患尿路感染，医生为我开了复方新诺明(磺胺类药物)，并吩咐服药后要多喝水。我严格按医嘱服药，一周后尿急、尿频、尿痛等症状消除，尿路感染被治愈。最近我又被查出患有胃溃疡，医生为我开了硫糖铝等几种胃药，医生却吩咐服药时要少喝些水。这一下让我搞不懂了：患病吃药到底是多喝点水好还是少喝点水好？

@ ms li:Last year I had urinary tract infection,The doctor opened co-trimoxazole for me(Sulfa drugs),And said to drink more water after taking this medicine.I strictly according to the medicine the doctor's advice,A week after the urgency/Frequent urination/Urinary symptoms such as pain,Urinary tract infection is cured.I was recently diagnosed with stomach ulcers,The doctor opened to me sucralfate some stomach medicine, etc,The doctor has ordered medication to drink less water.This let I can't understand:Ill drink lots of water to take medicine is good or less good drink some water?

　　暨南大学附属第一医院陈祖辉博士：大多数人认为平时多喝水对身体健康有利，患病服药时当然是多喝点水好；也有人认为吃药喝水多少无所谓，关键是只要把药能服下去就会发挥药效，因此图省事干脆来个“干吞”了事。这些观点和做法都是欠妥的。有病服药的时候，多喝水是一条捷径，因为多喝水不但能预防药物损伤身体，还能促进药效，譬如说治疗感冒、发烧、结石类疾病的药物，多喝水的确有着很好的效果。但是，并不是所有药服用时都需要多喝水。有些药物因其特殊的起效方式，服用时不仅不能多喝水，甚至不能喝水，否则会降低药效，失去治疗作用。下面这些药物服用时不宜多喝水：

Dr Chen Zuhui jinan university first affiliated hospital:Most people think that drink water more at ordinary times is good for health,Medication, of course, is to drink lots of water when the well;Also some people think that take medicine drink how much it doesn't matter,The key is as long as the medicine it will can exert effect,Therefore figure simply to save trouble"Dry swallow"settle.These ideas and practices are not satisfactory.Ill take medicine,Drinking more water is a shortcut,Because drinking more water can not only prevent drug damage to the body,Also can promote the efficacy,Such as cold remedies/Have a fever/Stone diseases drugs,Drink more water indeed have a very good effect.but,Not all medication when they need to drink more water.Some drugs because of its special way of work,When taking not only cannot drink more water,Can't even drink water,Otherwise it will reduce effectiveness,Loss treatment.When taking these drugs should not drink more water:

　　一些治疗胃溃疡的药物，服药之时就不适宜多喝水。这类药物多被制成混悬剂，进入胃后变成无数不溶解的细小颗粒，像粉末一样覆盖在受损的胃黏膜上，这样胃黏膜才能免于胃酸侵蚀，慢慢长出新的组织，并恢复其原有功能。服用这类药物时，如果喝水多反而会稀释药物，使覆盖在受损胃黏膜上的药物颗粒减少，保护膜变薄，从而失去治疗作用。而且，服这类药后半小时内也不要喝水，因为短时间内大量喝水，同样会把刚刚形成的保护膜冲掉，使受损胃黏膜重新暴露在有腐蚀性的胃酸中。

Some of the treatment of peptic ulcer drugs,When the medication is not suitable to drink more water.The drugs were made more suspension agent,After entering stomach into millions of tiny particles insoluble,Like powder covered on the damaged gastric mucosa,In this way can the gastric mucosa from gastric acid erosion,Slowly grow new organization,And restore its original function.When taking the drugs,If water can dilute drugs instead,Make the cover on the damaged gastric mucosa drug particles decreases,Thinning of the protective film,Thus loss of therapeutic effect.and,Take this medicine after half an hour and don't drink water,Drink lots of water for a short time,Will also see a recently formed the protective film,Make the damaged gastric mucosa to show in a corrosive acid.

　　吃止咳药时也不宜多喝水。常见的止咳糖浆药物较黏稠，服用后药物会黏附在咽部，直接作用于病变部位，从而起到消炎止咳作用。如果喝过多的水，会把咽部药物的有效成分冲掉，使局部药物浓度降低，影响药效发挥。如果觉得口干，应在服药半小时后再喝水。苦味健胃剂如复方龙胆酊利用其苦味，通过舌头的味觉感受器，反射性地促进胃液分泌来增进食欲，因此也不宜多喝水，以免冲淡苦味而影响药效。记者 赵兵辉

When to eat some cough medicine, also should not drink more water.Common cough syrup drugs more viscous,After taking drugs can stick in the pharynx,Act directly on the lesion site,Thus the antiphlogistic cough.If you drink too much water,The active components of the pharyngeal drug bath,Lower the local drug concentration,Impact effects play a.If you feel dry mouth,Medicine should be in half an hour before drink.Bitter stomachic, such as compound gentian tincture used its bitter taste,Through the tongue taste receptor,Reflective to promote gastric juice to secrete stomachic,So unfavorable also drink more water,So as not to dilute the bitter taste and affect efficacy.The reporter zhao hui