HAYWARD, Calif.--(BUSINESS WIRE)--Impax Laboratories, Inc. (NASDAQ: IPXL) today reported second quarter 2012 financial results. Adjusted net income increased $28.4 million to $41.0 million in the second quarter 2012, or $0.60 per diluted share, compared to $12.6 million, or $0.19 per diluted share, in the prior year period, primarily attributable to the benefit of the revenue and gross profit earned from United States (U.S.) Zomig® sales pursuant to the previously disclosed License Agreement with AstraZeneca UK Limited (AstraZeneca License Agreement) and higher generic Adderall XR® sales. Adjusted results exclude certain items related to recent third-party business development transactions.