Cinnabar eaten too much may have oral mucous membrane ulcers, vomiting, abdominal pain, pus and blood stools, muscle tremors, and even coma and convulsions, kidney damage and other bad effects of poisoning. Cinnabar its flavor is sweet, slightly cold, toxic, into the heart meridian. It has the effect of clearing the heart and detoxifying the toxin, brightening the eyes, calming the mind (using drugs of heavy nature to stabilize the mind), and is used for insomnia, convulsions (diseases with fainting, twitching, and convulsions as the main manifestations), sores, carbuncles, and swollen poisons, and palpitations (accelerated heartbeat often accompanied by panic attacks) and other illnesses. It should be noted that Cinnabar is toxic and dosage should be cautious. Adverse reactions of Cinnabar include, prolonged or excessive consumption of Cinnabar may cause oral mucosal ulcers, vomiting, abdominal pain, pus and blood stools, muscle tremors, and even coma and convulsions, kidney damage and other manifestations of acute and chronic poisoning. This product should not be taken in large quantities or in small quantities for a long time to avoid mercury poisoning. It is forbidden for pregnant women, people with liver and kidney insufficiency. This drug is usually not included in decoctions, and fire calcination is contraindicated. Before taking this medicine, it should be used under the guidance of a Chinese doctor to identify the symptoms, and should not be purchased and used on its own to avoid adverse consequences.