是药三分毒 shì yào sān fēn dú

DEFINITIONS

  1. every medicine has its side effect

CHARACTERS

是 shì indeed, yes, right; to be; demonstrative pronoun, this, that
药 yào leaf of Dahurian angelica plant; medicine
三 sān three
分 fēn divide; small unit of time etc.
毒 dú poison, venom; poisonous