Being a long-term and/or good customer is sometimes, unfortunately, determined by the vendor. And too often do the "not so reputable" IOPs try to pass off fakes in hopes that people don't notice. But there could be other factors that could contribute to the sending of fake pills (ie: testing Customs, greedy drop shippers, etc).
Also, to strengthen the point that
, definitely skim through the threads in this area of the forum for tips on how to spot fake medications from the alternative brands.
Throw a pepper into the air. If it fails to come down, you've gone mad, so trust nothing.