Taking pills before or after meals depends on the condition and medicinal properties. Generally speaking, tonics should be taken before meals; Insecticides and purgatives are mostly taken on an empty stomach; Stomach-invigorating drugs and drugs with great gastrointestinal irritation should be taken after meals; Other drugs should generally be taken after meals; The sleeping medicine should be taken before going to bed. Note: No matter taking medicine before or after meals, there should be a slight interval, such as1~ 2 hours before or after meals, so as not to affect the curative effect.