From Healthcare & Pharma and USA - 23 Apr 2014 08:27 UTC Valeant, Ackman may have fight on hands for Allergan Add to My Stories Print page Add to Favourites Whilst the US$46bn offer by Canada’s Valeant Pharmaceuticals International and activist investor William Ackman for Allergan, the US pharmaceuticals group that manufactures Botox, has been described as “compelling” we can…