Exhibit 4.3

INCORPORATED UNDER THE LAWS OF

THE STATE OF DELAWARE


COMMON STOCK	AMAG PHARMACEUTICALS, INC.	CUSIP 00163U 10 6
$.01 PAR VALUE	THIS CERTIFICATE IS TRANSFERABLE IN BOSTON, MASSACHUSETTS AND IN NEW YORK, NEW YORK	SEE REVERSE FOR CERTAIN DEFINITIONS

THIS CERTIFIES

THAT

is the owner of

FULLY PAID AND NON-ASSESSABLE SHARES OF COMMON STOCK, $.01 PAR VALUE, OF

AMAG PHARMACEUTICALS, INC. transferable on the books of the Corporation in person or by attorney upon surrender of this certificate properly endorsed. This certificate and the shares represented hereby are subject to the laws of the State of Delaware and to the Certificate of Incorporation and the By-laws of the Corporation as from time to time amended.

This certificate is not valid until countersigned and registered by the Transfer Agent and Registrar.

IN WITNESS WHEREOF, AMAG PHARMACEUTICALS, INC. has caused its facsimile corporate seal and the facsimile signatures of its duly authorized officers to be hereunto affixed.

Dated:


PRESIDENT	AMAG Pharmaceuticals, Inc		TREASURER
	CORPORATE
	SEAL
	1981
	DELAWARE

		COUNTERSIGNED AND REGISTERED:
		AMERICAN STOCK TRANSFER & TRUST COMPANY, LLC
		(NEW YORK, N.Y.)
		TRANSFER AGENT AND REGISTRAR
		BY
		AUTHORIZED SIGNATURE

The Corporation will furnish without charge to each stockholder who so requests the powers, designations, preferences and relative, participating, optional or other special rights of each class of stock or series thereof and the qualifications, limitations or restrictions of such preferences and/or rights.

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	UNIF GIFT MIN ACT - Custodian
TEN ENT	- as tenants by the entireties	(Cust) (Minor)
JT TEN	- as joint tenants with right of survivorship	under Uniform Gifts to Minors
	and not as tenants in common	Act
COM PROP	- as community property	(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 TYPEWRITE NAME AND ADDRESS OF ASSIGNEE

Shares of the capital 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,*
	NOTICE:	THE SIGNATURE TO THIS ASSIGNMENT MUST CORRESPOND WITH THE NAME AS WRITTEN UPON THE FACE OF THE CERTIFICATE IN EVERY PARTICULAR, WITHOUT ALTERATION OR ENLARGEMENT OR ANY CHANGE WHATEVER

Signature(s) Guaranteed:

THIS CERTIFICATE ALSO EVIDENCES AND ENTITLES THE HOLDER HEREOF TO CERTAIN RIGHTS AS SET FORTH IN A

THE SIGNATURE(S) MUST BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION (BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS WITH MEMBERSHIP N AN APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM), PURSUANT TO S.E.C. RULE 17Ad-15.

RIGHTS AGREEMENT BETWEEN AMAG PHARMACEUTICALS, INC. (THE “COMPANY”) AND AMERICAN STOCK TRANSFER & TRUST COMPANY, LLC AS RIGHTS AGENT (THE “RIGHTS AGENT”), DATED AS OF SEPTEMBER 4, 2009, AS AMENDED FROM TIME TO TIME (THE “RIGHTS AGREEMENT”), THE TERMS OF WHICH ARE HEREBY INCORPORATED HEREIN BY REFERENCE AND A COPY OF WHICH IS ON FILE AT THE PRINCIPAL EXECUTIVE OFFICES OF THE COMPANY. UNDER CERTAIN CIRCUMSTANCES, AS SET FORTH IN THE RIGHTS AGREEMENT, SUCH RIGHTS WILL BE EVIDENCED BY SEPARATE CERTIFICATES AND WILL NO LONGER BE EVIDENCED BY THIS CERTIFICATE. THE COMPANY WILL MAIL TO THE HOLDER OF THIS CERTIFICATE A COPY OF THE RIGHTS AGREEMENT WITHOUT CHARGE AFTER RECEIPT OF A WRITTEN REQUEST THEREFOR. AS DESCRIBED IN THE RIGHTS AGREEMENT, RIGHTS ISSUED TO ANY PERSON WHO BECOMES AN ACQUIRING PERSON OR AN AFFILIATE OR ASSOCIATE THEREOF (AS DEFINED IN THE RIGHTS AGREEMENT) AND CERTAIN RELATED PERSONS, WHETHER CURRENTLY HELD BY OR ON BEHALF OF SUCH PERSON OR BY ANY SUBSEQUENT HOLDER, SHALL BECOME NULL AND VOID.