There are many reasons why a pharmacy may end up with medication they no longer need. Examples include: Pharmacists with customers who move. Pharmacists with medications that have recently lost their patent. Pharmacists with customers who have changed their prescriptions. Pharmacists with an overstock of prescription drugs. Pharmacists dealing with less than ideal manufacturer package sizes. Sellers are licensed neighborhood pharmacists from California who wish to minimize waste and see their prescription drugs end up in the hands of other independent pharmacists and their patients.