Possibly. There are branded products that she is allergic to and she's not allergic to the generic, but it tends to be the generics using the ingredient she can't have.
My point is that the generalizations are MOSTLY true, but there can be exceptions. People who discount all generics out of hand are usually just blowhards.
But the Never Trump Republican Refugees will tell you that it was THEM that realized the truth! Not the left that has been saying it all along!