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

OMB APPROVAL OMB Number: 3235-0287 Expires: January 31, 2005 Estimated average burden hours per response... 0.5

(Print or Type Responses)

1. Name and Address of Reporting Person * Topper James N   2. Issuer Name and Ticker or Trading Symbol LA JOLLA PHARMACEUTICAL CO [LJPC] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 601 UNION STREET, SUITE 3200 3. Date of Earliest Transaction (Month/Day/Year) 12/14/2005 (Street) SEATTLE, WA 98101 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 12/14/2005   P   20,000,000 (1) A $ 0.75 (2) 20,000,000 (1) I By Frazier Healthcare V, LP (1)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
	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.		SEC 1474 (9-02)

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 Option (right to buy)

$ 0.69

12/14/2005

A

40,000

(3)

12/14/2015

Common Stock

40,000

$ 0

40,000

D

Warrants (right to buy) (1)

$ 1

12/14/2005

P

5,000,000

12/14/2005

12/14/2010

Common Stock

5,000,000

(2)

5,000,000

I

By Frazier Healthcare V, LP

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Topper James N 601 UNION STREET, SUITE 3200 SEATTLE, WA 98101	X

Signatures

/s/ Gail A. Sloan Attorney-in-fact for James N. Topper		12/14/2005
**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)	These securities are held by Frazier Healthcare V, L.P. Mr. Topper is a member of the investment committee of FHM V, LLC, the general partner of FHM V, L.P., which is the general partner of Frazier Healthcare V, L.P. As a member of the FHM V, LLC investment committee, Mr. Topper may be deemed to share voting and investment power for securities held by Frazier Healthcare V, L.P. Mr. Topper and the Frazier entities disclaim beneficial ownership of all such securities except to the extent of their proportionate pecuniary interests therein.
(2)	Acquired pursuant to that certain Securities Purchase Agreement, dated October 6, 2005.
(3)	The stock options vest and become exercisable with respect to 25% of the underlying shares on 12/14/2005 and with respect to an additional 25% of the underlying shares on each of the next three annual anniversaries thereof.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.