Pharmaceutical companies: do pharmaceutical companies have any moral responsibility to ensure their products are not consumed illegitimately?

Pharmaceutical companies

•Do pharmaceutical companies have any moral responsibility to ensure their products are not consumed illegitimately?

•How would you recognize an ethical pharmaceutical company – what are its characteristics?

•Which organization should be held morally culpable for solving this issue?

Be sure to include the perspectives of social contract theory and virtue ethics in your responses.