Prestige Brands Holdings, Inc. has completed the purchase of the two remaining brands of the 17 brands it agreed to acquire from GlaxoSmithKline (GSK) on December 20, 2011. Friday’s purchase of Debrox ear wax remover and Gly-Oxide oral rinse completes the transaction. The purchase of 15 of the 17 brands Prestige agreed to acquire was completed on January 31, 2012 for $615 million. The subsequent purchase of the remaining two brands finalizes the transaction, which called for Prestige to...