UPS delivers prescription medications to US homes by drone for the first time:

These aren’t the first drone deliveries that have been made in the US, nor are they even the first from UPS specifically. Google offshoot Wing launched a drone delivery service of its own last month in Virginia which delivers over-the-counter medicines and other health and wellness items, and UPS has also been operating a drone delivery pilot at WakeMed Hospital in North Carolina since March where it says it has now made 1,500 deliveries. What’s new is that UPS Flight Forward’s service includes prescription medications, and that it’s flying them directly to residential homes.

My guess is that in less than 5 years drone delivery will not only be commonplace, but it will be the primary mechanism for delivering small packages. It's easy to imagine a tractor trailer full of packages and drones arriving in a community and spending several hours flying those packages to their final destinations. This approach would be much more efficient than driving the truck to every delivery.