Dilong is a concoction of Dilong, i.e. Dilong is removed from impurities, washed, cut into pieces and dried. Dilong is also known as earthworms, due to the inconvenience of the living body into the medicine, and fishy smell is heavy, often will be removed from the impurities of Dilong cut off, washed, dried concocted for use, has a heat, shock, through the collaterals, asthma, diuresis and other efficacy, clinically commonly used in the treatment of high fever and dizziness, epileptic convulsions, paralysis pain in the joints, numbness of the limbs, hemiplegia (one side of the limbs can not be free to move), lung fever, asthma cough, edema and urination, and so on. It should be noted that not all patients can use Dilong to treat their diseases, due to the cold nature of the preparation of Dilong, such as for the spleen and stomach cold (spleen and stomach weakness and cold), the application of the drug can aggravate the original condition. The drug should not be used by pregnant women, as there is a risk of miscarriage. Excessive oral dosage of Dilong can lead to poisoning, which is mainly manifested as headache, dizziness, blood pressure increasing and then decreasing, abdominal pain, gastrointestinal bleeding, palpitation (rapid heartbeat, often accompanied by panic), and respiratory difficulties. If patients need to apply the preparation of Dilantin, should be under the guidance of a professional physician, so as not to blindly use the drug, resulting in adverse consequences.