Valeant Pharmaceuticals (VRX) has gotten a lot of face time due to a stream of recent acquisitions that include Sprout Pharmaceuticals, maker of “female Viagra” Addyi. But it’s not the only drugmaker on a shopping spree. Sector Leader Allergan (AGN) has been busy, too. Formerly known as Actavis, the firm changed its name to Allergan in June after trumping Valeant in a bidding war for the Botox maker.