Cang Er Zi can not be applied externally to treat poisoning. Cang Er Zi has the effect of evacuating wind-cold, dispelling wind-dampness, and promoting the opening of nasal orifices.
Cang Er Zi is often used in the treatment of headache, nasal congestion, congested nose, nasal congestion, nasal abyss (mainly manifested as obscene nasal discharge, the amount of wiping unclean), rubella itching, dampness paralysis, etc. It is a good medicine for nasal abyss and can not cure poisoning. Cang Er Zi is mainly used externally for nasal congestion, which is a good medicine for treating nasal congestion and does not play a role in treating poisoning.
It should be noted that Cang Er Zi is poisonous and the dosage should not be too large, as excessive dosage can easily cause symptoms such as chest tightness and palpitation.
If you need to use the drug, should be under the guidance of a professional physician, not self-medication, so as not to cause adverse reactions.