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Exhibit 4.1 
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Exhibit 4.1
NUMBER
MJN
SHARES
COMMON STOCK
INCORPORATED UNDER
THE LAWS OF THE STATE
OF DELAWARE
MEAD JOHNSON NUTRITION COMPANY
THIS CERTIFICATE IS TRANSFERABLE IN JERSEY CITY, NJ, NEW YORK, NY AND PITTSBURGH, PA
SEE REVERSE FOR CERTAIN DEFINITIONS
This Certifies that
CUSIP 582839 10 6
is the owner of
SPECIMEN
FULLY PAID AND NONASSESSABLE SHARES OF COMMON STOCK, $0.01 PAR VALUE, OF
MEAD JOHNSON NUTRITION COMPANY
transferable on the books of the Corporation by the holder hereof in person or by duly authorized attorney upon surrender of this certificate properly endorsed.
This certificate is not valid until countersigned by the Transfer Agent and registered by the Registrar.
WITNESS the facsimile seal of the Corporation and the facsimile signatures of its duly authorized officers.
Dated:
MEAD JOHNSON NUTRITION COMPANY
CORPORATE
SEAL
2008
DELAWARE
Mead Johnson Nutrition TM
Senior Vice President and Chief Financial Officer
Senior Vice President, General Counsel and Secretary
COUNTERSIGNED AND REGISTERED:
MELLON INVESTOR SERVICES LLC
TRANSFER AGENT AND REGISTRAR
BY:
AUTHORIZED SIGNATURE

The following abbreviations, when used in the inscription on the face of this certificate, shall be construed as though they were written out in full according to applicable laws or regulations:
TEN COM – as tenants in common
TEN ENT – as tenants by the entireties
JT TEN – as joint tenants with right of survivorship and not as tenants in common
UNIF GIFT MIN ACT – Custodian
(Cust) (Minor)
under Uniform Gifts to Minors
Act
(State)
UNIF TRF MIN ACT – Custodian (until age)
(Cust)
under Uniform Transfers
(Minor)
to Minors Act
(State)
Additional abbreviations may also be used though not in the above list.
FOR VALUE RECEIVED, hereby sell, assign and transfer unto
PLEASE INSERT SOCIAL SECURITY OR OTHER
IDENTIFYING NUMBER OF ASSIGNEE
(PLEASE PRINT OR TYPE NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE)
Shares of the Common Stock represented by the within Certificate, and do hereby irrevocably constitute and appoint
Attorney to transfer the said stock on the books of the within named Corporation with full power of substitution in the premises.
Dated
X
X
NOTICE: THE SIGNATURE(S) TO THIS ASSIGNMENT MUST CORRESPOND WITH THE NAME(S) AS WRITTEN UPON THE FACE OF THE CERTIFICATE IN EVERY PARTICULAR, WITHOUT ALTERATION OR ENLARGEMENT OR ANY CHANGE WHATEVER.
Signature(s) Guaranteed
By
THE SIGNATURE(S) MUST BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION (BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS WITH MEMBERSHIP IN AN APPROVED MEDALLION SIGNATURE GUARANTEE PROGRAM), PURSUANT TO S.E.C. RULE 17Ad-15.