For free drop-off locations, go to www.StopWaste.org/RESource and search "medications." Do a second search for "needles" or "sharps." Detailed information at http://www.stopwaste.org/at-home/household-hazardous-waste/common-hazardous-materials
There is a drop off box inside the entrance to Highland Hospital next to elevators by information.
Thanks! Your answer is awaiting moderation.