The epiphyllum should be boiled for one hour to half an hour. The symptoms are numbness of the mouth and tongue, numbness of the face, numbness of other organs of the body, trembling of the limbs, burning of the mouth, salivation, nausea, vomiting, dizziness, blurred vision, panic, irritability, and also difficulty in breathing, dilated pupils, pale face, arrhythmia, etc., which can cause death in severe cases. Therefore, when taking epiphyllum orally, be sure to first decoct it in boiling water for half an hour to an hour. If the amount of epimedium is larger, you can decoct it for more time.