Anurse is preparing a client with type 1 diabetes for discharge. the client can care for himself; however, he's had a problem with unstable blood glucose levels in the past. based on the client's history, he should be referred to which health care worker?

Insulin is a peptide therapeutic used to manage type 1 diabetes, which affects more than 20 million people worldwide according to the international diabetes federation. a significant limitation to the broad distribution and use of insulin to treat type 1 diabetes is the fact that it must be administered by injection rather than orally. why is insulin administered by injection and not orally?