"The obligation to treat subsists, even when it may not be possible to cure!" I did not know that there was an "obligation to treat" and especially "when it may not be possible to cure". I have never heard of this obligation.
Nothing new here except the supposed obligation to treat. I would have thought the bolded words applied to all medicine, not just narcotic and psychotropic substances. I have known treatments to be forced on patients, one in particular: a child who had asked to have no more chemotherapy. Her parents supported her in her wish and she was removed from their custody. She died in cruel circumstances without her loving parents able to be with her.
The obligation to treat refers to the moral obligation to offer treatment to the ill. No one is obligated to accept treatment that they feel is useless or where the side effects outweigh the benefits