The correct way to use Cynanchum is to take it internally: decoction, soaked in wine, into pills, bulk; external use: pounding compresses, water decoction wash and so on. If used internally, it can be directly subdued or fried with bran.
Cang Er Zi enters the lung meridian. Cang Er Ye is bitter, pungent, warm and poisonous. It disperses wind-cold, opens the nose and dispels wind-dampness. Used for wind-cold headache, nasal congestion, congested nose, nasal abyss (mainly manifested as filthy nasal mucus, the amount of wipe not clean), wind rash itching, damp paralysis contracture.
Cang Er Zi is toxic, taking too large a dose can lead to poisoning, should not be taken in excess pregnant women should be cautious of using Cang Er Leaf. Cang Er Zi is contraindicated for those with a history of allergy to Cang Er Zi.
Please use under the guidance of a professional Chinese medicine practitioner, do not self-medication.