It depends on which drug is to be given and what is its mechanism of action. e.g. for any antibiotic intra venous route will be a suitable choice whereas in case of a laxative we can administer it rectally if oral is not tolerated.
thanks
Well if you're referring to the human body, our cells make up a lot of everything we're made of. Muscles, organs, bones, blood, skin, etc. Biologically speaking, there's a lot to the human body besides organs. Sorry if this isn't very helpful.