This paper studies the effect of two regulatory instruments - a price cap and a reference price system - a mandatory substitution rule, and the combination of both on generic competition in a Salop-type model with an off-patent brand-name drug and n differentiated generic versions. The price cap...

Price discrimination has raised numerous public concerns and many regulatory agencies have enacted fairness regulations on prices to curb such controversial practices. In this work, we find that, relative to non-regulation, appropriate regulation may alleviate the cut-throat price competition...