FORM 4
[ X ] 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
                                                                                  
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OMB Number: 3235-0287
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

Byrd Scott A. 		2. Issuer Name and Ticker or Trading Symbol

CADENCE PHARMACEUTICALS INC [ CADX ] 		5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director                      _____ 10% Owner
__ X __ Officer (give title below)      _____ Other (specify below)
SVP, Chief Commercial Officer
(Last)          (First)          (Middle)

C/O CADENCE PHARMACEUTICALS, INC., 12481 HIGH BLUFF DRIVE, STE 200 		3. Date of Earliest Transaction (MM/DD/YYYY)

3/19/2014
(Street)

SAN DIEGO, CA 92130
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
6. Individual or Joint/Group Filing (Check Applicable Line)

_ X _ Form filed by One Reporting Person
___ 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   3/19/2014     U    2000   D $14.00   0   D    

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
stock option (right to buy)   $11.00   3/19/2014     D         125000      (1) 7/14/2019   common stock   125000   $3.00   0   D    
stock option (right to buy)   $9.22   3/19/2014     D         8000      (1) 3/25/2020   common stock   8000   $4.78   0   D    
stock option (right to buy)   $9.22   3/19/2014     D         240000      (1) 3/25/2020   common stock   240000   $4.78   0   D    
stock option (right to buy)   $8.55   3/19/2014     D         80000      (1) 3/16/2021   common stock   80000   $5.45   0   D    
stock option (right to buy)   $3.51   3/19/2014     D         70314      (1) 3/14/2022   common stock   70314   $10.49   0   D    
stock option (right to buy)   $5.40   3/19/2014     D         100000      (1) 3/13/2023   common stock   100000   $8.60   0   D    
restricted stock unit   $0.00   3/19/2014     D         100000      (2)   (2) common stock   100000   $14.00   0   D    

Explanation of Responses:
( 1)  In connection with the merger of Cadence Pharmaceuticals, Inc. ("Cadence") with Madison Merger Sub, Inc. ("Merger Sub") on March 19, 2014, and pursuant to the terms of the Agreement and Plan of Merger (the "Merger Agreement") by and among Cadence, Mallinckrodt plc ("Parent") and Merger Sub, dated February 10, 2014, this option became fully vested and was automatically canceled and terminated and the holder became entitled to receive an amount in cash, without interest and less the amount of any tax withholding, equal to the product of (a) the number of shares of common stock of Cadence underlying such option multiplied by (b) the excess, if any, of $14.00 (the "Offer Price") over the exercise price per share of such option.
( 2)  Pursuant to the terms of the Merger Agreement, these restricted stock units were converted into a right to receive a cash payment upon vesting equal to the product of the Offer Price, without interest, and the number of shares of Cadence common stock subject to this grant (the "Converted Award"). The Converted Award will vest in accordance with the original vesting schedule of the restricted stock units, subject to accelerated vesting upon the earlier to occur of (a) September 11, 2014 or (b) certain terminations of the reporting person's employment as set forth in the Merger Agreement.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
Byrd Scott A.
C/O CADENCE PHARMACEUTICALS, INC.
12481 HIGH BLUFF DRIVE, STE 200
SAN DIEGO, CA 92130

SVP, Chief Commercial Officer

Signatures
/s/ Hazel M. Aker, Attorney-in-fact 3/21/2014
** 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.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.
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