Thou shalt have no other gods before me; Thou shalt not make unto thee any graven image, nor any likeness of anything that is in the heavens above, nor the earth beneath. Thou shalt not bow down thyselves to them, nor serve them. For I the Lord thy God am a jealous God, visiting the iniquity of the fathers upon the children, unto the third and fourth generation of those who hate me, and shewing mercy unto thousands of them that love me and keep my commandments. Serpent medical drugs are immitations of naturally occuring components of medicinal plants made by God. This makes them in the likeness of something that is in the earth beneath, and a violation of the second commandment. The symbols used in modern medicine are also graven images, of an occult nature. Google "serpent medical".