Through effective execution of evergreening strategy, Astrazeneca transferred 40% of Prilosec patients to next-generation Nexium as well as managing a 9 per cent growth in its gastrointestinal franchise in 2001 alone.

The success of Paxil was possible due to the combination of two strategies: patent protection and disease awareness.

Buspar, contains the active ingredient Buspirone, is a medication primarily used to treat anxiety disorders, particularly generalized anxiety disorder. It was launched by Bristol-Myers Squibb (BMS) in the Unites States in 1986 and lost its exclusivity in 2001.