If the stool is hard, if it is caused by inflammation stimulation, you can eat metronidazole, but for drug factors, dietary factors, gastrointestinal power insufficiency and other reasons, the stool is hard, you can not eat metronidazole. 1. You can eat metronidazole: when suffering from colonic and rectal inflammation, due to inflammatory stimulation, it may lead to excessive absorption of fecal water stored in the intestinal tract and become dry and hard, and the symptom of hard stools with one grain of stools will occur more often than not during defecation. It is recommended to take oral antibiotic drugs for treatment, such as metronidazole, levofloxacin, etc., and also need to take bifidobacteria, lactobacillus tablets and other medications when necessary. 2. can not eat metronidazole treatment: some patients have a grain of hard stool symptoms, may be due to drug factors (such as: the abuse of laxatives, antispasmodic painkillers, etc.), dietary factors (such as: eating too little fiber food, eat too much difficult to digest food), gastric power insufficiency and other reasons. The above causes of the symptoms of a hard stool can not eat metronidazole treatment, need to be directed at the primary disease conditioning, the effect is better. Therefore, the symptoms of a hard stool, whether you can take metronidazole need to be in the doctor’s interview, combined with the relevant project examination, comprehensive judgment.