Antibiotics that need to be taken after meals are usually taken 30 to 60 minutes after meals, and it should be noted that some antibiotics need to be taken before meals. Some antibiotics, such as cephalosporins, carbapenems, etc., due to the gastrointestinal tract may cause some stimulation after taking, so need to be taken after meals, 30 to 60 minutes after meals to take medication is because the drug can try to avoid the impact of food on the drug in this time period, try to ensure that the drug is maximized by the body to ensure that the body is absorbed and utilized. However, it should be noted that not all drugs are suitable for taking after meals, such as levofloxacin, azithromycin and other concentration-dependent antibacterial drugs, you need to take before meals. Antibiotics should be used with caution in patients suffering from liver or kidney insufficiency, and are contraindicated in people who are allergic to the corresponding antibiotics. If any abnormal symptoms are found in the course of medication, prompt medical attention is needed to avoid accidents.