The argument of this paper is that Plato's position on medicinal lies is neither dishonest nor inconsistent. When adequately understood in its context, the account Plato gives of truth and falsehood offers valuable insights into the nature of each and the role both play in the moral life of the individual and the state.
Wiles, Anne M., "Plato on Truth and Falsehood" (2009). The Society for Ancient Greek Philosophy Newsletter. 371.