Do non-substitutable generics always require a clinical trial?
What are the criteria that the FDA uses to differentiate a substitutable from a non-substitutable generic?
How do you refer to a drug that is a non-substitutable generic? In other words, what is the correct terminology to distinguish a substitutable from a non-substitutable generic?
If a ocmpany applies to be a substitutable generic, but the FDA says it is not substitutable, does the FDA then use another pathway to approve (or not approve) the drug?