Vernalis plc was a UK-based pharmaceuticals business headquartered in Winnersh, with research in Cambridge, and with a Berwyn, PA, US-based commercial operation, Vernalis Therapeutics Inc., focusing on the sales and marketing of slow-release formulations of prescription cough and cold medicines. Tuzistra XR (codeine polistirex/ chlorpheniramine polistirex) was the first launched product which arose from this strategy,[1] however sales did not reach expectations.[2] As a result, the strategy was abandoned and the company was put up for sale.[3] Vernalis plc was listed on AIM until its acquisition by Ligand Holdings (UK) Ltd, a subsidiary of Ligand Pharmaceuticals, Inc. (NASDAQ:LGND) on 10 October 2018.[4]
Vernalis plc (formerly known as