Should unapproved drugs be made available as a last resort to patients with conditions for which conventional treatments are known to be ineffective?

If a person want to take experimental drugs as a last resort let them. Because if all the other options didn’t work or make the patient feel slightly better let them go ahead with the last resort. Because sometimes even though it is experimental maybe it will be successful or slows down the process or even just relieve them of the pain. A patient should know all their possible choices and know the possible side-effects or consequences when it comes to this so they know what could possibly be done for them.