Xuan Shen

not to use in cases of diarrhea due to infection. Some Chinese medical classics mentioned that this herb does not mix well with huang qi.

Zhi Mu

large dosage can be toxic and lower blood pressure.

Zhi Zi

large dosage can be toxic to liver.[1]

Xia Ku Cao

long term usage can inhibit immune system

Bie Jia

not to use during pregnancy or in cases of weak digestion

Chuan Niu Xi

not to use during menstruation or during pregnancy.

Mu Li

not to use during high fever due to excess (function) with no sweating.

Zhe Bei Mu

not for long term use

Yuan Zhi

did not find any published information on toxicity

Huang Qi

in rare occasion some patients show shin irritation (rash). Some Chinese medical classics mentioned that this herb should not be used with xuan shen.

Fang Feng

long term large dosage is toxic especially exposure to sunlight because it contains psoralen. Not to use with blood thinning medication

Gan Cao

long term large usage may be toxic to adrenal system.