In general, eating food does not have the effect of emetic, if you want to emetic quickly, we suggest you choose physical methods, by stimulating the throat can achieve the effect of emetic, you can use the tongue depressor to touch the pharyngeal arch and the back wall of the pharynx to cause vomiting reaction, this method is simple and effective, you can also take emetic drugs under the guidance of doctors, emetic faster drugs are deshydromorphine, copper sulfate, etc., for opioid poisoning should not choose If you have hepatomegaly, you cannot use copper sulfate to induce emesis, which may lead to aggravation of copper poisoning. Emesis can discharge the toxins accumulated in the gastrointestinal tract, and rehydration is needed after emesis to avoid electrolyte disorders and dehydration. It should be noted that emesis is prohibited if strong acid or strong alkaline preparations are taken to avoid more serious damage to the esophageal mucosa, etc.