Ownership Submission
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

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(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
PREHN MARY E
   2. Issuer Name and Ticker or Trading Symbol
FOREST LABORATORIES INC [FRX] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
VP Licensing
(Last)
(First)
(Middle)
C/O FOREST LABORATORIES, INC., 909 THIRD AVENUE		 3. Date of Earliest Transaction (Month/Day/Year)
02/21/2007
(Street)

NEW YORK, NY 10022		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction 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 02/21/2007   M   27,380 A $ 38.145 39,361 D  
Common Stock 02/21/2007   M   18,000 A $ 48.34 57,361 D  
Common Stock 02/21/2007   M   2,999 A $ 42.535 60,360 D  
Common Stock 02/21/2007   M   1,500 A $ 40.29 61,860 D  
Common Stock 02/21/2007   S   3,600 D $ 54.5 58,260 D  
Common Stock 02/21/2007   S   4,200 D $ 54.49 54,060 D  
Common Stock 02/21/2007   S   4,900 D $ 54.48 49,160 D  
Common Stock 02/21/2007   S   700 D $ 54.47 48,460 D  
Common Stock 02/21/2007   S   21,700 D $ 54.46 26,760 D  
Common Stock 02/21/2007   S   6,900 D $ 54.45 19,860 D  
Common Stock 02/21/2007   S   4,600 D $ 54.44 15,260 D  
Common Stock 02/21/2007   S   3,000 D $ 54.43 12,260 D  
Common Stock 02/21/2007   S   279 D $ 54.42 11,981 (1) D  

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction 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
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(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
Stock Options (Right to Buy) $ 38.145 02/21/2007   M     27,380 12/14/2002(2) 12/14/2011 Common Stock 27,380 $ 0 0 D  
Stock Options (Right to Buy) $ 48.34 02/21/2007   M     18,000 12/13/2003(3) 12/13/2012 Common Stock 18,000 $ 0 9,932 D  
Stock Options (Right to Buy) $ 42.535 02/21/2007   M     2,999 12/13/2005(4) 12/13/2014 Common Stock 2,999 $ 0 4,649 D  
Stock Options (Right to Buy) $ 40.29 02/21/2007   M     1,500 12/09/2006(5) 12/09/2015 Common Stock 1,500 $ 0 6,018 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
PREHN MARY E
C/O FOREST LABORATORIES, INC.
909 THIRD AVENUE
NEW YORK, NY 10022		       VP Licensing  

Signatures

 /s/ Mary E. Prehn   02/22/2007
**Signature of Reporting Person Date

Explanation of Responses:

* 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).
(1) The reporting person beneficially owns 59, 481 shares which includes options to purchase 47,500 shares.
(2) The option was exercisable as to 15% of the shares covered by the option on each of the first four anniversaries of the date of the grant (December 14, 2001) and as to the remaining 40% on the fifth anniversary of the date of grant.
(3) The option is exercisable as to 15% of the shares covered by the option on each of the first four anniversaries of the date of the grant (December 13, 2002) and as to the remaining 40% on the fifth anniversary of the date of grant.
(4) The option is exercisable as to 15% of the shares covered by the option on each of the first four anniversaries of the date of the grant (December 13, 2004) and as to the remaining 40% on the fifth anniversary of the date of grant.
(5) The option is exercisable as to 15% of the shares covered by the option on each of the first four anniversaries of the date of the grant (December 9, 2005) and as to the remaining 40% on the fifth anniversary of the date of grant.

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