Pu Di Lan Oral Liquid belongs to the Chinese patent class of drugs, clinically mainly used in the treatment of chronic pharyngitis, tonsillitis, mumps and other diseases, with anti-inflammatory, antiviral effect. Pandan oral solution clinically most recommend that patients are best about half an hour after meals orally, better. Pandan Oral Liquid, if consumed on an empty stomach, may cause some stimulation to the patient’s gastrointestinal tract, it is generally recommended that oral intake of about half an hour after meals, the effect is a little bit better, because the oral liquid taken after meals on the gastrointestinal tract stimulation is relatively small. As most drugs are absorbed in the small intestine, if the patient takes the drug immediately after eating, after a full meal, the food reduces the rate of gastric emptying, prolonging the residence time of the drug in the stomach, thus delaying the absorption of Pudilan oral solution in the small intestine, clinically it is generally recommended to eat half an hour or so after meals to have a better effect, and the stimulation of the various aspects are less.