I’ve seen a lot of counterfeit pills, as good as some are if you truly look you’ll see something is off. There are pill identification sites to help you compare. Like once I got a counterfeit Xanax, looked ok at first glance, but when I actually looked at it I could see the G was rounded while the real thing had corners, the #s didn’t look quite right, you drop them they break cause they’re super brittle but never break at the scores like the real thing if it were old and brittle. There are more things to check for but those were applicable to the example. And I was the type that mixed opioids like fentanyl with benzos and other crap and I’d pass out in food or on my face somewhere, basically I was a zombie most of the time and I still spotted them.