Take it about 1 hour after meals. Generally speaking, tonic medicines should be taken before meals. Most anthelmintics and laxatives are taken on an empty stomach. Stomachic medicines and medicines that are more irritating to the stomach and intestines should be taken after meals. Malaria medicines should be taken 1-2 hours before an attack. Sleeping medicines should be taken before bedtime. Other drugs are generally appropriate to serve after meals, in short, no matter before or after meals, there should be a slight interval, such as before meals, after 1 hour or so, so as not to affect the efficacy of the treatment.