Yes, but the OP got the medication online meaning it's not prescription
Exactly.
It is exactly like buying tires off Amazon, then calling your car dealer or tire store and asking how they will affect handling because something doesn't feel right. When they also sells tires.
Of course they are going to tell you to call the manufacturer. Or bring it in and "they'll look at it".
That's why people need to carefully think before buying something online rather than a source who will stand behind it and offer help.
I wish it weren't that way.