SC 13G/A

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13G

Under the Securities Exchange Act of 1934
(Amendment No. 1)*

AUXILIUM PHARMACEUTICALS, INC.

(Name of Issuer)

Common Stock, Par Value $0.01 Per Share

(Title of Class of Securities)

05334D107

(CUSIP Number)

December 31, 2008

(Date of Event which Requires Filing

of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

o Rule 13d-1(b)

þ Rule 13d-1(c)

o Rule 13d-1(d)

*The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

Page 1 of 10

TABLE OF CONTENTS


	Item 1(a)Name of Issuer
	Item 1(b) Address of Issuer’s Principal Executive Offices
	Items 2 (a) Name of Person Filing
	Item 2(b) Address of Principal Business Office
	Item 2(c) Citizenship
	Item 2(d) Title of Class of Securities
	Item 2(e) CUSIP Number
	Item 3 Not Applicable
	Item 4 Ownership
	Item 5 Ownership of Five Percent or Less of a Class
	Item 6 Ownership of More than Five Percent on Behalf of Another Person
	Item 7 Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company
	Item 8 Identification and Classification of Members of the Group
	Item 9 Notice of Dissolution of Group
	Item 10 Certification
SIGNATURE


CUSIP No.		05334D107	13G	Page		2		of		10	Pages


1	NAME OF REPORTING PERSON I.R.S. IDENTIFICATION NO. OF ABOVE PERSON S.A.C. Capital Advisors, LLC


2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
	(a) o
	(b) þ

3	SEC USE ONLY



4	CITIZENSHIP OR PLACE OF ORGANIZATION

	Delaware

		5	SOLE VOTING POWER

NUMBER OF			0

SHARES		6	SHARED VOTING POWER
BENEFICIALLY
OWNED BY			125,000 (see Item 4)

EACH		7	SOLE DISPOSITIVE POWER
REPORTING
PERSON			0

WITH		8	SHARED DISPOSITIVE POWER

			125,000 (see Item 4)

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

	125,000 (see Item 4)

10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

	o

11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

	0.3% (see Item 4)

12	TYPE OF REPORTING PERSON*

	00

*SEE INSTRUCTION BEFORE FILLING OUT

Page 2 of 10


CUSIP No.		05334D107	13G	Page		3		of		10	Pages


1	NAME OF REPORTING PERSON I.R.S. IDENTIFICATION NO. OF ABOVE PERSON S.A.C. Capital Management, LLC


2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
	(a) o
	(b) þ

3	SEC USE ONLY



4	CITIZENSHIP OR PLACE OF ORGANIZATION

	Delaware

		5	SOLE VOTING POWER

NUMBER OF			0

SHARES		6	SHARED VOTING POWER
BENEFICIALLY
OWNED BY			125,000 (see Item 4)

EACH		7	SOLE DISPOSITIVE POWER
REPORTING
PERSON			0

WITH		8	SHARED DISPOSITIVE POWER

			125,000 (see Item 4)

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

	125,000 (see Item 4)

10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

	o

11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

	0.3% (see Item 4)

12	TYPE OF REPORTING PERSON*

	00

*SEE INSTRUCTION BEFORE FILLING OUT

Page 3 of 10


CUSIP No.		05334D107	13G	Page		4		of		10	Pages


1	NAME OF REPORTING PERSON I.R.S. IDENTIFICATION NO. OF ABOVE PERSON Sigma Capital Management, LLC


2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
	(a) o
	(b) þ

3	SEC USE ONLY



4	CITIZENSHIP OR PLACE OF ORGANIZATION

	Delaware

		5	SOLE VOTING POWER

NUMBER OF			0

SHARES		6	SHARED VOTING POWER
BENEFICIALLY
OWNED BY			0 (see Item 4)

EACH		7	SOLE DISPOSITIVE POWER
REPORTING
PERSON			0

WITH		8	SHARED DISPOSITIVE POWER

			0 (see Item 4)

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

	0 (see Item 4)

10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

	o

11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

	0% (see Item 4)

12	TYPE OF REPORTING PERSON*

	00

*SEE INSTRUCTION BEFORE FILLING OUT

Page 4 of 10


CUSIP No.		05334D107	13G	Page		5		of		10	Pages


1	NAME OF REPORTING PERSON I.R.S. IDENTIFICATION NO. OF ABOVE PERSON Steven A. Cohen


2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
	(a) o
	(b) þ

3	SEC USE ONLY



4	CITIZENSHIP OR PLACE OF ORGANIZATION

	United States

		5	SOLE VOTING POWER

NUMBER OF			0

SHARES		6	SHARED VOTING POWER
BENEFICIALLY
OWNED BY			125,000 (see Item 4)

EACH		7	SOLE DISPOSITIVE POWER
REPORTING
PERSON			0

WITH		8	SHARED DISPOSITIVE POWER

			125,000 (see Item 4)

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

	125,000 (see Item 4)

10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

	o

11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

	0.3% (see Item 4)

12	TYPE OF REPORTING PERSON*

	IN

*SEE INSTRUCTION BEFORE FILLING OUT

Page 5 of 10


Item 1(a)		Name of Issuer:


		Auxilium Pharmaceuticals, Inc.


Item 1(b)		Address of Issuer’s Principal Executive Offices:


		40 Valley Stream Parkway, Malvern, PA 19355


Items 2(a)		Name of Person Filing:


		This statement is filed by: (i) S.A.C. Capital Advisors, LLC (“SAC Capital Advisors”) with respect to shares of common stock, $0.01 par value (“Shares”) per share, of the Issuer beneficially owned by S.A.C. Capital Associates, LLC (“SAC Capital Associates”), S.A.C. MultiQuant Fund, LLC (“SAC MultiQuant Fund”) and S.A.C. Select Fund, LLC (“SAC Select Fund”); (ii) S.A.C. Capital Management, LLC (“SAC Capital Management”) with respect to Shares beneficially owned by SAC Capital Associates, SAC MultiQuant Fund and SAC Select Fund; (iii) Sigma Capital Management, LLC (“Sigma Management”) with respect to Shares beneficially owned by Sigma Capital Associates, LLC (“Sigma Capital Associates”); and (iv) Steven A. Cohen with respect to Shares beneficially owned by SAC Capital Advisors, SAC Capital Management, SAC Capital Associates, SAC MultiQuant Fund, SAC Select Fund, Sigma Management and Sigma Capital Associates.


Item 2(b)		Address of Principal Business Office:


		The address of the principal business office of (i) SAC Capital Advisors and Mr. Cohen is 72 Cummings Point Road, Stamford, Connecticut 06902 and (ii) SAC Capital Management and Sigma Management is 540 Madison Avenue, New York, New York 10022.


Item 2(c)		Citizenship:


		SAC Capital Advisors, SAC Capital Management and Sigma Management are Delaware limited liability companies. Mr. Cohen is a United States citizen.


Item 2(d)		Title of Class of Securities:


		Common Stock, par value $0.01 per share

Page 6 of 10


Item 2(e)		CUSIP Number:


		05334D107


Item 3		Not Applicable


Item 4		Ownership:


		The percentages used herein are calculated based upon the Shares issued and outstanding as of November 3, 2008 as reported on the Issuer’s quarterly report on Form 10-Q filed with the Securities and Exchange Commission for the quarterly period ended September 30, 2008.


		As of the close of business on December 31, 2008:


		1. S.A.C. Capital Advisors, LLC
		(a) Amount beneficially owned: 125,000
		(b) Percent of class: 0.3%
		(c)(i) Sole power to vote or direct the vote: -0-
		(ii) Shared power to vote or direct the vote: 125,000
		(iii) Sole power to dispose or direct the disposition: -0-
		(iv) Shared power to dispose or direct the disposition: 125,000


		2. S.A.C. Capital Management, LLC
		(a) Amount beneficially owned: 125,000
		(b) Percent of class: 0.3%
		(c)(i) Sole power to vote or direct the vote: -0-
		(ii) Shared power to vote or direct the vote: 125,000
		(iii) Sole power to dispose or direct the disposition: -0-
		(iv) Shared power to dispose or direct the disposition: 125,000


		3. Sigma Capital Management, LLC
		(a) Amount beneficially owned: -0-
		(b) Percent of class: 0%
		(c)(i) Sole power to vote or direct the vote: -0-
		(ii) Shared power to vote or direct the vote: -0-
		(iii) Sole power to dispose or direct the disposition: -0-
		(iv) Shared power to dispose or direct the disposition: -0-

Page 7 of 10


		4. Steven A. Cohen
		(a) Amount beneficially owned: 125,000
		(b) Percent of class: 0.3%
		(c)(i) Sole power to vote or direct the vote: -0-
		(ii) Shared power to vote or direct the vote: 125,000
		(iii) Sole power to dispose or direct the disposition: -0-
		(iv) Shared power to dispose or direct the disposition: 125,000


		SAC Capital Advisors, SAC Capital Management, Sigma Management and Mr. Cohen own directly no Shares. Pursuant to investment management agreements in effect at the time, each of SAC Capital Advisors and SAC Capital Management shared all investment and voting power with respect to the securities held by SAC Capital Associates, SAC MultiQuant Fund and SAC Select Fund. Pursuant to an investment management agreement, Sigma Management maintains investment and voting power with respect to the securities held by Sigma Capital Associates. Mr. Cohen controls each of SAC Capital Advisors, SAC Capital Management and Sigma Management. As of December 31, 2008, by reason of the provisions of Rule 13d-3 of the Securities Exchange Act of 1934, as amended, each of SAC Capital Advisors, SAC Capital Management and Mr. Cohen may be deemed to own beneficially 125,000 Shares (constituting approximately 0.3% of the Shares outstanding). Each of SAC Capital Advisors, SAC Capital Management, Sigma Management and Mr. Cohen disclaims beneficial ownership of any of the securities covered by this statement.


Item 5		Ownership of Five Percent or Less of a Class:


		If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following. þ


Item 6		Ownership of More than Five Percent on Behalf of Another Person:


		Not Applicable

Page 8 of 10


Item 7		Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company:


		Not Applicable


Item 8		Identification and Classification of Members of the Group:


		Not Applicable


Item 9		Notice of Dissolution of Group:


		Not Applicable


Item 10		Certification:

By signing below the signatory certifies that, to the best of his knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect.

Page 9 of 10

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.


Dated: January 8, 2009

S.A.C. CAPITAL ADVISORS, LLC

By:		/s/ Peter Nussbaum

Name:		Peter Nussbaum
Title:		Authorized Person

S.A.C. CAPITAL MANAGEMENT, LLC

By:		/s/ Peter Nussbaum

Name:		Peter Nussbaum
Title:		Authorized Person

SIGMA CAPITAL MANAGEMENT, LLC

By:		/s/ Peter Nussbaum

Name:		Peter Nussbaum
Title:		Authorized Person

STEVEN A. COHEN

By:		/s/ Peter Nussbaum

Name:		Peter Nussbaum
Title:		Authorized Person

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