P.M.
There are charitable organizations that collect medical suppllies for disaster relief. I don't know offhand if they also collect drugs, but it would be worth asking. If the following organizations don't accept medication, perhaps they can recommend other groups that will:
Doctors Without Borders <http://www.doctorswithoutborders.org/donate/?ref=main-men...;
American Red Cross <http://www.redcross.org/portal/site/en/menuitem.d8aaecf21...;