Before we get started, I'd like to remind you that this conference call contains forward-looking statements as defined by the Private Securities Litigation Reform Act of 1995, including all revenue and earnings per share guidance, and other statements regarding anticipated results of operations, market conditions and integration of any acquisitions.
Forward-looking statements depend on assumptions, data or methods that may be incorrect or imprecise, and are subject to risks and uncertainties. Events that could cause our actual results and future actions of the Company to differ materially from those described in forward-looking statements are set forth under the caption, 'Forward-Looking Statements,' in today's earnings release, and are described in our SEC filings, including the business section of Cooper's Annual Report on Form 10-K. These are publicly available and on request from the Company's Investor Relations department.
Now, before I turn the call over to Bob, let me comment on the agenda for the call. Bob will begin by providing highlights on the quarter, followed by Greg who will then discuss first quarter results.
We will keep the formal presentation to roughly 30 minutes then open up the call for questions. We expect the call to last approximately one hour. We request that anyone asking questions please limit yourselves to one question. Should you have any additional questions, please call our Investor line at 925-460-3663 or email firstname.lastname@example.org. As a reminder, this call is being webcast and a copy of the earnings release is available through the Investor Relations section of the Cooper Companies' website.And with that, I'll turn the call over to Bob for his opening remarks. Bob Weiss Thank you, Kim. Good afternoon good evening everyone. After a successful 2011 we started 2012 out strong. Our Biofinity and Proclear momentum continued for the first quarter of 2012 we put up solid top line growth plus 11% also in constant currency. We delivered $326 million in revenue, our gross profit margin achieved 65% with the strong top line, solid margins, lower interest expense non-GAAP earnings per share was up 32% to $1.12 35% on a GAAP basis.