- Statement of Changes in Beneficial Ownership (4)

FORM 4 [ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES	OMB APPROVAL OMB Number: 3235-0287 Expires: February 28, 2011 Estimated average burden hours per response... 0.5
	Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(f) of the Investment Company Act of 1940

1. Name and Address of Reporting Person * SANOFI-AVENTIS	2. Issuer Name and Ticker or Trading Symbol CHATTEM INC [ CHTT ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director                      __ X __ 10% Owner _____ Officer (give title below)      _____ Other (specify below)
(Last)          (First)          (Middle) 174, AVENUE DE FRANCE	3. Date of Earliest Transaction (MM/DD/YYYY) 2/9/2010
(Street) PARIS, I0 75013 (City)        (State)        (Zip)	4. If Amendment, Date Original Filed (MM/DD/YYYY)	6. Individual or Joint/Group Filing (Check Applicable Line) ___ Form filed by One Reporting Person _ X _ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security (Instr. 3)	2. Trans. Date	2A. Deemed Execution Date, if any	3. Trans. Code (Instr. 8)		4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock, without par value	2/9/2010		P		28864905   (1)	A	$93.50	44622694	I	By River Acquisition Corp.   (2)
Common Stock, without par value	2/9/2010		P		552321   (3)	A	$93.50	45175015	I	By River Acquisition Corp.   (2)
Common Stock, without par value	2/10/2010		P		300936   (3)	A	$93.50	45475951	I	By River Acquisition Corp.   (2)
Common Stock, without par value	2/11/2010		P		923268   (3)	A	$93.50	46399219	I	By River Acquisition Corp.   (2)

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	4. Trans. Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:
( 1)	Reflects shares acquired by Aventis Inc. ("Aventis") from Chattem, Inc. ("Chattem"), pursuant to the exercise of the "top-up" option provided for in the Agreement and Plan of Merger, dated as of December 20, 2009, among sanofi-aventis ("Parent"), River Acquisition Corp. (the "Purchaser") and Chattem, and subsequently contributed to the Purchaser.
( 2)	The shares are held by the Purchaser. The Purchaser is an indirect, wholly-owned subsidiary of Parent and a direct, wholly-owned subsidiary of Aventis. Aventis is a wholly-owned subsidiary of Sanofi-aventis Am??rique du Nord S.N.C. ("ADN"). ADN is a wholly-owned subsidiary of Parent. The shares may also be deemed to be indirectly beneficially owned by Parent, ADN and Aventis.
( 3)	Reflects shares purchased in a tender offer.

Reporting Owners
Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
SANOFI-AVENTIS 174, AVENUE DE FRANCE PARIS, I0 75013		X
River Acquisition Corp. 55 CORPORATE DRIVE BRIDGEWATER, NJ 08807		X
Sanofi-Aventis Amerique du Nord S.N.C. 174, AVENUE DE FRANCE PARIS, I0 75013		X
AVENTIS INC 3711 KENNETT PIKE, SUITE 200 GREENVILLE, DE 19807		X

Signatures
/s/ SEE EXHIBIT 99.1		2/11/2010
** Signature of Reporting Person		Date

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note:	File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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