CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We consent to the incorporation
by reference in Registration Statements Nos. 333-160201 and 333-164606 on Form S-8, of our reports dated February 16, 2011, relating to the (1) consolidated financial statements and financial statement schedule of Mead Johnson Nutrition
Company and subsidiaries (the Company) (which report expresses an unqualified opinion and includes an explanatory paragraph relating to the financial statement allocations of expenses from Bristol-Myers Squibb Company in 2008) and
(2) the effectiveness of the Companys internal control over financial reporting, appearing in the Annual Report on Form 10-K of Mead Johnson Nutrition Company for the year ended December 31, 2010.
/s/ DELOITTE & TOUCHE LLP
February 16, 2011