If it's a generic medication, then dispose of it according to the strongpak program if you work for CVS. I'm sure every chain has a strongpak equivalent (pharmaceutical waste). Nothing bad will happen. You have to do this, as it is accounted for in inventory. You can't simply throw it in the garbage as I've seen people do. It won't come off your inventory and you will be short. People say "oh it was only 4 pills, how can my inventory come up short." But if you drop 4 amlodipine 10 mg tablets once a day, over the course of a year thats 1200 tablets. That about 13 bottles of 90 count Amlodipine 10mg tablets that retails for thousands of dollars. It freaking adds up. You have to be careful and ALWAYS STRONGPAK!!
If it's a generic, really, don't think twice, just strongpak it.
If it's a brand name medication, the best thing is prevention. You have to be careful. Tell your techs to be ultra careful whenever counting brand name drugs. Stress that the bottle costs thousands of dollars and dropping a pill is equivalent to losing a 20 dollar bill if they were at pickup. Once you explain it like that, you get the message through and they will be careful. However, if you still happen to drop that brand name pill, use your professional judgment. If the pill has no visible stain on it, and it looks fine, and you literally just picked it up off of the floor, then use your best judgment. If you drop it and someone steps on it, then do the right thing and process it as waste.