I suppose its always possible for anything to make mistakes, us or machines. However, CVS is all over the new in Atlanta area for making mistakes with giving out the wrong medicine and its not once in awhile. So, I would bring it to their attention, no matter what pharmacy it is that you use, so it can be corrected.

I use a local family owned pharmacy and any time they may not have enough of something to fill my script, they always let me know how many they owe me and when they will have it available. Also, if a pill changes form, they always call that to my attention so I will know that what I got was right but that it may have a different shape or color. This usually happens with generics.