Fact of life - parallel trade (PT) is legal and is the only competition to medicines under patent. The pharma industry can "learn" to live with it losing revenue or can do something about it. So far there is no good solution to parallel trade as this business of parallel trade is steadily growing.
First, and so far the only, effective solution to PT is the OGP - Optimal Global Pricing technology. It is employing a finitely converging algorithm to resolve the economic equilibrium problem with optimal prices, optimal trade flows.