Are controlled substances shipped differently than other medications?
Medco ships controlled substances with a high potential for addiction or abuse (C2) via 2-day air and requires a signature upon receipt to ensure that the medications have been received. If you are not home, the carrier will leave a notice that delivery was attempted, along with instructions on how you can schedule redelivery or pick up your package. We ship controlled substances with a lower potential for abuse (C3 – C5) by regular mail through the U.S. Postal Service.