UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                  SCHEDULE 13G
                                 (Rule 13d-102)
                    INFORMATION TO BE INCLUDED IN STATEMENTS
                  FILED PURSUANT TO RULE 13d-1(b), (c) AND (d)
                AND AMENDMENTS THERETO FILED PURSUANT TO 13d-2(b)

                               (Amendment No. 1)*



                             CHAD THERAPEUTICS, INC.
--------------------------------------------------------------------------------
                                (Name of Issuer)

                    Common Stock, $.0.01 par value per share
--------------------------------------------------------------------------------
                         (Title of Class of Securities)

                                    157228107
--------------------------------------------------------------------------------
                                 (CUSIP Number)

                                December 31, 2007
--------------------------------------------------------------------------------
             (Date of Event Which Requires Filing of this Statement)


Check the appropriate box to designate the rule pursuant to  which this Schedule
13G is filed:

         [ ] Rule 13d-1(b)
         [X] Rule 13d-1(c)
         [ ] 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 in 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).





CUSIP No.  157228107
--------------------------------------------------------------------------------

(1)  Names of Reporting Persons.   I.R.S.  Identification  Nos. of Above Persons
     (entities only):

      Laurus Master Fund, Ltd.
      98-0337673
--------------------------------------------------------------------------------

(2)  Check the Appropriate Box if a Member of a Group (See Instructions)
        (a) [ ]
        (b) [X]
--------------------------------------------------------------------------------

(3)     SEC Use Only
--------------------------------------------------------------------------------

(4)     Citizenship or Place of Organization:  Cayman Islands
--------------------------------------------------------------------------------
Number of Shares Beneficially Owned
  by Each Reporting Person With       (5) Sole Voting Power:                  0*
                                          --------------------------------------
                                      (6) Shared Voting Power:        1,016,982*
                                          --------------------------------------
                                      (7) Sole Dispositive Power:             0*
                                          --------------------------------------
                                      (8) Shared Dispositive Power:   1,016,982*
                                          --------------------------------------
--------------------------------------------------------------------------------
 (9) Aggregate Amount Beneficially Owned by Each Reporting Person:

           1,016,982
--------------------------------------------------------------------------------

(10) Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See
     Instructions):   [X]
--------------------------------------------------------------------------------

(11) Percent of Class Represented by Amount in Row (9): 9.99%*
--------------------------------------------------------------------------------

(12) Type of Reporting Person (See Instructions):  CO, HC
--------------------------------------------------------------------------------

* Based on 10,180,000 shares of the common stock, $0.01 par value per share (the
"Shares") outstanding of Chad Therapeutics,  Inc., a California corporation (the
"Company"),  as disclosed in the Company's Quarterly Report on Form 10-Q for the
quarterly  period ended  September 30, 2007.  As of December 31, 2007,  Calliope
Capital  Corporation  ("Calliope")  and Valens U.S. SPV I, LLC ("Valens US", and
together with Calliope,  the "Investors")  collectively  held (i) a warrant (the
"Warrant") to acquire 976,744  Shares,  at an exercise price of $1.24 per Share,
subject to certain  adjustments,  and (ii) a secured  convertible term note (the
"Note") in the aggregate principal amount of $750,000, which is convertible into
Shares at a conversion rate of $1.18 per Share,  subject to certain adjustments.
The Warrant and Note contain an issuance  limitation  prohibiting  the Investors
from exercising or converting  those securities to the extent that such exercise
would result in beneficial  ownership by the Investors of more than 9.99% of the
Shares then issued and  outstanding  (the "Issuance  Limitation").  The Issuance
Limitation  may be waived by the Investors upon at least 61 days prior notice to
the Company and shall automatically become null and void (i) following notice to
the Issuer of the occurrence  and during the  continuance of an event of default
(as defined in and pursuant to the terms of the applicable instrument),  or (ii)
upon  receipt  by the  Investors  of a Notice of  Redemption  (as  defined in an
pursuant to the terms of the applicable instrument).  Calliope is a wholly owned
subsidiary  of Laurus  Master  Fund,  Ltd.  which is managed  by Laurus  Capital
Management,  LLC. Valens US is managed by Valens Capital Management, LLC. Eugene
Grin and David Grin, through other entities,  are the controlling  principals of
Laurus  Capital  Management,  LLC and Valens Capital  Management,  LLC and share
voting and investment power over the securities owned by the Investors  reported
in this Schedule 13G, as amended.





CUSIP No.  157228107
--------------------------------------------------------------------------------

(1)  Names of Reporting Persons.   I.R.S.  Identification  Nos. of Above Persons
     (entities only):

      Calliope Capital Corporation
      57-1237865
--------------------------------------------------------------------------------

(2)  Check the Appropriate Box if a Member of a Group (See Instructions)
        (a) [ ]
        (b) [X]
--------------------------------------------------------------------------------

(3)     SEC Use Only
--------------------------------------------------------------------------------

(4)     Citizenship or Place of Organization:  Delaware
--------------------------------------------------------------------------------
Number of Shares Beneficially Owned
  by Each Reporting Person With       (5) Sole Voting Power:                  0*
                                          --------------------------------------
                                      (6) Shared Voting Power:        1,016,982*
                                          --------------------------------------
                                      (7) Sole Dispositive Power:             0*
                                          --------------------------------------
                                      (8) Shared Dispositive Power:   1,016,982*
                                          --------------------------------------
--------------------------------------------------------------------------------
 (9) Aggregate Amount Beneficially Owned by Each Reporting Person:

           1,016,982
--------------------------------------------------------------------------------

(10) Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See
     Instructions):   [X]
--------------------------------------------------------------------------------

(11) Percent of Class Represented by Amount in Row (9): 9.99%*
--------------------------------------------------------------------------------

(12) Type of Reporting Person (See Instructions):  CO
--------------------------------------------------------------------------------

* Based on 10,180,000 shares of the common stock, $0.01 par value per share (the
"Shares") outstanding of Chad Therapeutics,  Inc., a California corporation (the
"Company"),  as disclosed in the Company's Quarterly Report on Form 10-Q for the
quarterly  period ended  September 30, 2007.  As of December 31, 2007,  Calliope
Capital  Corporation  ("Calliope")  and Valens U.S. SPV I, LLC ("Valens US", and
together with Calliope,  the "Investors")  collectively  held (i) a warrant (the
"Warrant") to acquire 976,744  Shares,  at an exercise price of $1.24 per Share,
subject to certain  adjustments,  and (ii) a secured  convertible term note (the
"Note") in the aggregate principal amount of $750,000, which is convertible into
Shares at a conversion rate of $1.18 per Share,  subject to certain adjustments.
The Warrant and Note contain an issuance  limitation  prohibiting  the Investors
from exercising or converting  those securities to the extent that such exercise
would result in beneficial  ownership by the Investors of more than 9.99% of the
Shares then issued and  outstanding  (the "Issuance  Limitation").  The Issuance
Limitation  may be waived by the Investors upon at least 61 days prior notice to
the Company and shall automatically become null and void (i) following notice to
the Issuer of the occurrence  and during the  continuance of an event of default
(as defined in and pursuant to the terms of the applicable instrument),  or (ii)
upon  receipt  by the  Investors  of a Notice of  Redemption  (as  defined in an
pursuant to the terms of the applicable instrument).  Calliope is a wholly owned
subsidiary  of Laurus  Master  Fund,  Ltd.  which is managed  by Laurus  Capital
Management,  LLC. Valens US is managed by Valens Capital Management, LLC. Eugene
Grin and David Grin, through other entities,  are the controlling  principals of
Laurus  Capital  Management,  LLC and Valens Capital  Management,  LLC and share
voting and investment power over the securities owned by the Investors  reported
in this Schedule 13G, as amended.




CUSIP No.  157228107
--------------------------------------------------------------------------------

(1)  Names of Reporting Persons.   I.R.S.  Identification  Nos. of Above Persons
     (entities only):

      Laurus Capital Management, LLC
      13-4150669
--------------------------------------------------------------------------------

(2)  Check the Appropriate Box if a Member of a Group (See Instructions)
        (a) [ ]
        (b) [X]
--------------------------------------------------------------------------------

(3)     SEC Use Only
--------------------------------------------------------------------------------

(4)     Citizenship or Place of Organization:  Delaware
--------------------------------------------------------------------------------
Number of Shares Beneficially Owned
  by Each Reporting Person With       (5) Sole Voting Power:                  0*
                                          --------------------------------------
                                      (6) Shared Voting Power:        1,016,982*
                                          --------------------------------------
                                      (7) Sole Dispositive Power:             0*
                                          --------------------------------------
                                      (8) Shared Dispositive Power:   1,016,982*
                                          --------------------------------------
--------------------------------------------------------------------------------
 (9) Aggregate Amount Beneficially Owned by Each Reporting Person:

           1,016,982
--------------------------------------------------------------------------------

(10) Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See
     Instructions):   [X]
--------------------------------------------------------------------------------

(11) Percent of Class Represented by Amount in Row (9): 9.99%
--------------------------------------------------------------------------------

(12) Type of Reporting Person (See Instructions):  OO
--------------------------------------------------------------------------------

* Based on 10,180,000 shares of the common stock, $0.01 par value per share (the
"Shares") outstanding of Chad Therapeutics,  Inc., a California corporation (the
"Company"),  as disclosed in the Company's Quarterly Report on Form 10-Q for the
quarterly  period ended  September 30, 2007.  As of December 31, 2007,  Calliope
Capital  Corporation  ("Calliope")  and Valens U.S. SPV I, LLC ("Valens US", and
together with Calliope,  the "Investors")  collectively  held (i) a warrant (the
"Warrant") to acquire 976,744  Shares,  at an exercise price of $1.24 per Share,
subject to certain  adjustments,  and (ii) a secured  convertible term note (the
"Note") in the aggregate principal amount of $750,000, which is convertible into
Shares at a conversion rate of $1.18 per Share,  subject to certain adjustments.
The Warrant and Note contain an issuance  limitation  prohibiting  the Investors
from exercising or converting  those securities to the extent that such exercise
would result in beneficial  ownership by the Investors of more than 9.99% of the
Shares then issued and  outstanding  (the "Issuance  Limitation").  The Issuance
Limitation  may be waived by the Investors upon at least 61 days prior notice to
the Company and shall automatically become null and void (i) following notice to
the Issuer of the occurrence  and during the  continuance of an event of default
(as defined in and pursuant to the terms of the applicable instrument),  or (ii)
upon  receipt  by the  Investors  of a Notice of  Redemption  (as  defined in an
pursuant to the terms of the applicable instrument).  Calliope is a wholly owned
subsidiary  of Laurus  Master  Fund,  Ltd.  which is managed  by Laurus  Capital
Management,  LLC. Valens US is managed by Valens Capital Management, LLC. Eugene
Grin and David Grin, through other entities,  are the controlling  principals of
Laurus  Capital  Management,  LLC and Valens Capital  Management,  LLC and share
voting and investment power over the securities owned by the Investors  reported
in this Schedule 13G, as amended.




CUSIP No.  157228107
--------------------------------------------------------------------------------

(1)  Names of Reporting Persons.   I.R.S.  Identification  Nos. of Above Persons
     (entities only):

      Valens U.S. SPV I, LLC
      20-8903266
--------------------------------------------------------------------------------

(2)  Check the Appropriate Box if a Member of a Group (See Instructions)
        (a) [ ]
        (b) [X]
--------------------------------------------------------------------------------

(3)     SEC Use Only
--------------------------------------------------------------------------------

(4)     Citizenship or Place of Organization:  Delaware
--------------------------------------------------------------------------------
Number of Shares Beneficially Owned
  by Each Reporting Person With       (5) Sole Voting Power:                  0*
                                          --------------------------------------
                                      (6) Shared Voting Power:        1,016,982*
                                          --------------------------------------
                                      (7) Sole Dispositive Power:             0*
                                          --------------------------------------
                                      (8) Shared Dispositive Power:   1,016,982*
                                          --------------------------------------
--------------------------------------------------------------------------------
 (9) Aggregate Amount Beneficially Owned by Each Reporting Person:

           1,016,982
--------------------------------------------------------------------------------

(10) Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See
     Instructions):   [X]
--------------------------------------------------------------------------------

(11) Percent of Class Represented by Amount in Row (9): 9.99%*
--------------------------------------------------------------------------------

(12) Type of Reporting Person (See Instructions):  OO
--------------------------------------------------------------------------------

* Based on 10,180,000 shares of the common stock, $0.01 par value per share (the
"Shares") outstanding of Chad Therapeutics,  Inc., a California corporation (the
"Company"),  as disclosed in the Company's Quarterly Report on Form 10-Q for the
quarterly  period ended  September 30, 2007.  As of December 31, 2007,  Calliope
Capital  Corporation  ("Calliope")  and Valens U.S. SPV I, LLC ("Valens US", and
together with Calliope,  the "Investors")  collectively  held (i) a warrant (the
"Warrant") to acquire 976,744  Shares,  at an exercise price of $1.24 per Share,
subject to certain  adjustments,  and (ii) a secured  convertible term note (the
"Note") in the aggregate principal amount of $750,000, which is convertible into
Shares at a conversion rate of $1.18 per Share,  subject to certain adjustments.
The Warrant and Note contain an issuance  limitation  prohibiting  the Investors
from exercising or converting  those securities to the extent that such exercise
would result in beneficial  ownership by the Investors of more than 9.99% of the
Shares then issued and  outstanding  (the "Issuance  Limitation").  The Issuance
Limitation  may be waived by the Investors upon at least 61 days prior notice to
the Company and shall automatically become null and void (i) following notice to
the Issuer of the occurrence  and during the  continuance of an event of default
(as defined in and pursuant to the terms of the applicable instrument),  or (ii)
upon  receipt  by the  Investors  of a Notice of  Redemption  (as  defined in an
pursuant to the terms of the applicable instrument).  Calliope is a wholly owned
subsidiary  of Laurus  Master  Fund,  Ltd.  which is managed  by Laurus  Capital
Management,  LLC. Valens US is managed by Valens Capital Management, LLC. Eugene
Grin and David Grin, through other entities,  are the controlling  principals of
Laurus  Capital  Management,  LLC and Valens Capital  Management,  LLC and share
voting and investment power over the securities owned by the Investors  reported
in this Schedule 13G, as amended.





CUSIP No.  157228107
--------------------------------------------------------------------------------

(1)  Names of Reporting Persons.   I.R.S.  Identification  Nos. of Above Persons
     (entities only):

      Valens Capital Management, LLC
      20-8903345
--------------------------------------------------------------------------------

(2)  Check the Appropriate Box if a Member of a Group (See Instructions)
        (a) [ ]
        (b) [X]
--------------------------------------------------------------------------------

(3)     SEC Use Only
--------------------------------------------------------------------------------

(4)     Citizenship or Place of Organization:  Delaware
--------------------------------------------------------------------------------
Number of Shares Beneficially Owned
  by Each Reporting Person With       (5) Sole Voting Power:                  0*
                                          --------------------------------------
                                      (6) Shared Voting Power:        1,016,982*
                                          --------------------------------------
                                      (7) Sole Dispositive Power:             0*
                                          --------------------------------------
                                      (8) Shared Dispositive Power:   1,016,982*
                                          --------------------------------------
--------------------------------------------------------------------------------
 (9) Aggregate Amount Beneficially Owned by Each Reporting Person:

           1,016,982
--------------------------------------------------------------------------------

(10) Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See
     Instructions):   [X]
--------------------------------------------------------------------------------

(11) Percent of Class Represented by Amount in Row (9): 9.99%*
--------------------------------------------------------------------------------

(12) Type of Reporting Person (See Instructions):  OO
--------------------------------------------------------------------------------

* Based on 10,180,000 shares of the common stock, $0.01 par value per share (the
"Shares") outstanding of Chad Therapeutics,  Inc., a California corporation (the
"Company"),  as disclosed in the Company's Quarterly Report on Form 10-Q for the
quarterly  period ended  September 30, 2007.  As of December 31, 2007,  Calliope
Capital  Corporation  ("Calliope")  and Valens U.S. SPV I, LLC ("Valens US", and
together with Calliope,  the "Investors")  collectively  held (i) a warrant (the
"Warrant") to acquire 976,744  Shares,  at an exercise price of $1.24 per Share,
subject to certain  adjustments,  and (ii) a secured  convertible term note (the
"Note") in the aggregate principal amount of $750,000, which is convertible into
Shares at a conversion rate of $1.18 per Share,  subject to certain adjustments.
The Warrant and Note contain an issuance  limitation  prohibiting  the Investors
from exercising or converting  those securities to the extent that such exercise
would result in beneficial  ownership by the Investors of more than 9.99% of the
Shares then issued and  outstanding  (the "Issuance  Limitation").  The Issuance
Limitation  may be waived by the Investors upon at least 61 days prior notice to
the Company and shall automatically become null and void (i) following notice to
the Issuer of the occurrence  and during the  continuance of an event of default
(as defined in and pursuant to the terms of the applicable instrument),  or (ii)
upon  receipt  by the  Investors  of a Notice of  Redemption  (as  defined in an
pursuant to the terms of the applicable instrument).  Calliope is a wholly owned
subsidiary  of Laurus  Master  Fund,  Ltd.  which is managed  by Laurus  Capital
Management,  LLC. Valens US is managed by Valens Capital Management, LLC. Eugene
Grin and David Grin, through other entities,  are the controlling  principals of
Laurus  Capital  Management,  LLC and Valens Capital  Management,  LLC and share
voting and investment power over the securities owned by the Investors  reported
in this Schedule 13G, as amended.





CUSIP No.  157228107
--------------------------------------------------------------------------------

(1)  Names of Reporting Persons.   I.R.S.  Identification  Nos. of Above Persons
     (entities only):

      David Grin

--------------------------------------------------------------------------------

(2)  Check the Appropriate Box if a Member of a Group (See Instructions)
        (a) [ ]
        (b) [X]
--------------------------------------------------------------------------------

(3)     SEC Use Only
--------------------------------------------------------------------------------

(4)     Citizenship or Place of Organization:  Israel
--------------------------------------------------------------------------------
Number of Shares Beneficially Owned
  by Each Reporting Person With       (5) Sole Voting Power:                  0*
                                          --------------------------------------
                                      (6) Shared Voting Power:        1,016,982*
                                          --------------------------------------
                                      (7) Sole Dispositive Power:             0*
                                          --------------------------------------
                                      (8) Shared Dispositive Power:   1,016,982*
                                          --------------------------------------
--------------------------------------------------------------------------------
 (9) Aggregate Amount Beneficially Owned by Each Reporting Person:

          1,016,982
--------------------------------------------------------------------------------

(10) Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See
     Instructions):   [X]
--------------------------------------------------------------------------------

(11) Percent of Class Represented by Amount in Row (9): 9.99%
--------------------------------------------------------------------------------

(12) Type of Reporting Person (See Instructions):  IN
--------------------------------------------------------------------------------

* Based on 10,180,000 shares of the common stock, $0.01 par value per share (the
"Shares") outstanding of Chad Therapeutics,  Inc., a California corporation (the
"Company"),  as disclosed in the Company's Quarterly Report on Form 10-Q for the
quarterly  period ended  September 30, 2007.  As of December 31, 2007,  Calliope
Capital  Corporation  ("Calliope")  and Valens U.S. SPV I, LLC ("Valens US", and
together with Calliope,  the "Investors")  collectively  held (i) a warrant (the
"Warrant") to acquire 976,744  Shares,  at an exercise price of $1.24 per Share,
subject to certain  adjustments,  and (ii) a secured  convertible term note (the
"Note") in the aggregate principal amount of $750,000, which is convertible into
Shares at a conversion rate of $1.18 per Share,  subject to certain adjustments.
The Warrant and Note contain an issuance  limitation  prohibiting  the Investors
from exercising or converting  those securities to the extent that such exercise
would result in beneficial  ownership by the Investors of more than 9.99% of the
Shares then issued and  outstanding  (the "Issuance  Limitation").  The Issuance
Limitation  may be waived by the Investors upon at least 61 days prior notice to
the Company and shall automatically become null and void (i) following notice to
the Issuer of the occurrence  and during the  continuance of an event of default
(as defined in and pursuant to the terms of the applicable instrument),  or (ii)
upon  receipt  by the  Investors  of a Notice of  Redemption  (as  defined in an
pursuant to the terms of the applicable instrument).  Calliope is a wholly owned
subsidiary  of Laurus  Master  Fund,  Ltd.  which is managed  by Laurus  Capital
Management,  LLC. Valens US is managed by Valens Capital Management, LLC. Eugene
Grin and David Grin, through other entities,  are the controlling  principals of
Laurus  Capital  Management,  LLC and Valens Capital  Management,  LLC and share
voting and investment power over the securities owned by the Investors  reported
in this Schedule 13G, as amended.





CUSIP No.  157228107
--------------------------------------------------------------------------------

(1)  Names of Reporting Persons.   I.R.S.  Identification  Nos. of Above Persons
     (entities only):

      Eugene Grin

--------------------------------------------------------------------------------

(2)  Check the Appropriate Box if a Member of a Group (See Instructions)
        (a) [ ]
        (b) [X]
--------------------------------------------------------------------------------

(3)     SEC Use Only
--------------------------------------------------------------------------------

(4)     Citizenship or Place of Organization:  United States
--------------------------------------------------------------------------------
Number of Shares Beneficially Owned
  by Each Reporting Person With       (5) Sole Voting Power:                  0*
                                          --------------------------------------
                                      (6) Shared Voting Power:        1,016,982*
                                          --------------------------------------
                                      (7) Sole Dispositive Power:             0*
                                          --------------------------------------
                                      (8) Shared Dispositive Power:   1,016,982*
                                          --------------------------------------
--------------------------------------------------------------------------------
 (9) Aggregate Amount Beneficially Owned by Each Reporting Person:

           1,016,982
--------------------------------------------------------------------------------

(10) Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See
     Instructions):   [X]
--------------------------------------------------------------------------------

(11) Percent of Class Represented by Amount in Row (9): 9.99%
--------------------------------------------------------------------------------

(12) Type of Reporting Person (See Instructions):  IN
--------------------------------------------------------------------------------

* Based on 10,180,000 shares of the common stock, $0.01 par value per share (the
"Shares") outstanding of Chad Therapeutics,  Inc., a California corporation (the
"Company"),  as disclosed in the Company's Quarterly Report on Form 10-Q for the
quarterly  period ended  September 30, 2007.  As of December 31, 2007,  Calliope
Capital  Corporation  ("Calliope")  and Valens U.S. SPV I, LLC ("Valens US", and
together with Calliope,  the "Investors")  collectively  held (i) a warrant (the
"Warrant") to acquire 976,744  Shares,  at an exercise price of $1.24 per Share,
subject to certain  adjustments,  and (ii) a secured  convertible term note (the
"Note") in the aggregate principal amount of $750,000, which is convertible into
Shares at a conversion rate of $1.18 per Share,  subject to certain adjustments.
The Warrant and Note contain an issuance  limitation  prohibiting  the Investors
from exercising or converting  those securities to the extent that such exercise
would result in beneficial  ownership by the Investors of more than 9.99% of the
Shares then issued and  outstanding  (the "Issuance  Limitation").  The Issuance
Limitation  may be waived by the Investors upon at least 61 days prior notice to
the Company and shall automatically become null and void (i) following notice to
the Issuer of the occurrence  and during the  continuance of an event of default
(as defined in and pursuant to the terms of the applicable instrument),  or (ii)
upon  receipt  by the  Investors  of a Notice of  Redemption  (as  defined in an
pursuant to the terms of the applicable instrument).  Calliope is a wholly owned
subsidiary  of Laurus  Master  Fund,  Ltd.  which is managed  by Laurus  Capital
Management,  LLC. Valens US is managed by Valens Capital Management, LLC. Eugene
Grin and David Grin, through other entities,  are the controlling  principals of
Laurus  Capital  Management,  LLC and Valens Capital  Management,  LLC and share
voting and investment power over the securities owned by the Investors  reported
in this Schedule 13G, as amended.





CUSIP No. 157228107

Item 1(a).  Name Of Issuer:  Chad Therapeutics, Inc.

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

            21622 Plummer Street
            Chatsworth, California 91311


Item 2(a).  Name of Person Filing:

            Laurus Master Fund, Ltd.

          This  Schedule  13G, as  amended,  is also filed on behalf of Calliope
          Capital  Corporation,  a  Delaware  corporation  and  a  wholly  owned
          subsidiary of Laurus Master Fund,  Ltd.,  Laurus  Capital  Management,
          LLC, a Delaware limited liability  company,  Valens U.S. SPV I, LLC, a
          Delaware limited liability company, Valens Capital Management,  LLC, a
          Delaware limited liability company, Eugene Grin and David Grin. Laurus
          Capital  Management,  LLC manages  Laurus  Master  Fund,  Ltd.  Valens
          Capital  Management,  LLC manages Valens U.S. SPV I, LLC.  Eugene Grin
          and David Grin, through other entities, are the controlling principals
          of Laurus Capital Management,  LLC and Valens Capital Management,  LLC
          and share sole voting and  investment  power over the shares  owned by
          Calliope Capital  Corporation and Valens U.S. SPV I, LLC.  Information
          related to each of Laurus  Capital  Management,  LLC,  Valens  Capital
          Management, LLC, Calliope Capital Corporation, Valens U.S. SPV I, LLC,
          Eugene Grin and David Grin is set forth on Appendix A hereto.


Item 2(b).  Address of Principal Business Office or, if None, Residence:

            c/o Laurus Capital Management, LLC,
            335 Madison Avenue, 10th Floor
            New York, NY 10017

Item 2(c).  Citizenship:

            Cayman Islands

Item 2(d).  Title of Class of Securities:  Common Stock ("Common Stock")


Item 2(e).  CUSIP No.:   157228107


Item 3.     If This Statement Is Filed Pursuant to Sections 240.13d-1(b) or
            240.13d-2(b) or (c), check whether the Person Filing is a:

            Not Applicable.


Item 4.  Ownership

         (a) Amount Beneficially Owned: 1,016,982

         (b) Percent of Class:  9.99%

         (c) Number of Shares as to which the person has:

             (i)  sole power to vote or to direct the vote                    0*

             (ii) shared power to vote or to direct the vote          1,016,982*

            (iii) sole power to dispose or to direct the
                  disposition of                                              0*

             (iv) shared power to dispose or to direct the
                  disposition of                                      1,016,982*

-------------------

* Based on 10,180,000 shares of the common stock, $0.01 par value per share (the
"Shares") outstanding of Chad Therapeutics,  Inc., a California corporation (the
"Company"),  as disclosed in the Company's Quarterly Report on Form 10-Q for the
quarterly  period ended  September 30, 2007.  As of December 31, 2007,  Calliope
Capital  Corporation  ("Calliope")  and Valens U.S. SPV I, LLC ("Valens US", and
together with Calliope,  the "Investors")  collectively  held (i) a warrant (the
"Warrant") to acquire 976,744  Shares,  at an exercise price of $1.24 per Share,
subject to certain  adjustments,  and (ii) a secured  convertible term note (the
"Note") in the aggregate principal amount of $750,000, which is convertible into
Shares at a conversion rate of $1.18 per Share,  subject to certain adjustments.
The Warrant and Note contain an issuance  limitation  prohibiting  the Investors
from exercising or converting  those securities to the extent that such exercise
would result in beneficial  ownership by the Investors of more than 9.99% of the
Shares then issued and  outstanding  (the "Issuance  Limitation").  The Issuance
Limitation  may be waived by the Investors upon at least 61 days prior notice to
the Company and shall automatically become null and void (i) following notice to
the Issuer of the occurrence  and during the  continuance of an event of default
(as defined in and pursuant to the terms of the applicable instrument),  or (ii)
upon  receipt  by the  Investors  of a Notice of  Redemption  (as  defined in an
pursuant to the terms of the applicable instrument).  Calliope is a wholly owned
subsidiary  of Laurus  Master  Fund,  Ltd.  which is managed  by Laurus  Capital
Management,  LLC. Valens US is managed by Valens Capital Management, LLC. Eugene
Grin and David Grin, through other entities,  are the controlling  principals of
Laurus  Capital  Management,  LLC and Valens Capital  Management,  LLC and share
voting and investment power over the securities owned by the Investors  reported
in this Schedule 13G, as amended.



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

         Not applicable


Item 6.  Ownership of More Than Five Percent on Behalf of Another Person

         Not Applicable.


Item 7.  Identification  and  Classification  of the  Subsidiary Which  Acquired
         the Security Being Reported on by the Parent Holding Company or Control
         Person

         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 I certify  that,  to the best of my  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.







                                    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.


                                              February 14, 2008
                                              ----------------
                                              Date


                                              LAURUS MASTER FUND, LTD.

                                              By:   /s/ David Grin
                                                 -------------------------------
                                              Name:  David Grin
                                              Title: Director



      Attention:  Intentional misstatements or omissions of fact constitute
                Federal criminal violations (See 18 U.S.C. 1001)





CUSIP No. 284739109

APPENDIX A

A. Name:                   Laurus Capital Management, LLC, a Delaware limited
                           liability company

   Address:                335 Madison Avenue, 10th Floor
                           New York, New York 10017

   Place of
   Organization:           Delaware


B. Name:                   Calliope Capital Corporation, a Delaware
                           corporation

   Address:                c/o Laurus Capital Management, LLC
                           335 Madison Avenue, 10th Floor
                           New York, New York 10017

   Place of
   Organization:           Delaware


C. Name:                   Valens U.S. SPV I, LLC, a Delaware limited liability
                           company

   Address:                c/o Laurus Capital Management, LLC
                           335 Madison Avenue, 10th Floor
                           New York, New York 10017

   Place of
   Organization:           Delaware


D. Name:                   Valens Capital Management, LLC, a Delaware limited
                           liability company

   Address:                c/o Laurus Capital Management, LLC
                           335 Madison Avenue, 10th Floor
                           New York, New York 10017

   Place of
   Organization:           Delaware


E. Name:                   David Grin
   Business                335 Madison Avenue, 10th Floor
   Address:                New York, New York 10017

   Principal               Director of Laurus Master Fund, Ltd.
   Occupation:             Principal of Laurus Capital Management, LLC

   Citizenship:            Israel


F. Name:                   Eugene Grin
   Business                335 Madison Avenue, 10th Floor
   Address:                New York, New York 10017

   Principal               Director of Laurus Master Fund, Ltd.
   Occupation:             Principal of Laurus Capital Management, LLC

   Citizenship:            United States






CUSIP No. 157228107


Each of Calliope Capital  Corporation,  Laurus Capital  Management,  LLC, Valens
U.S. SPV I, LLC,  Valens  Capital  Management,  LLC,  Eugene Grin and David Grin
hereby agree,  by their execution  below,  that the Schedule 13G (as amended) to
which  this  Appendix  A is  attached  is  filed  on  behalf  of each  of  them,
respectively.

Calliope Capital Corporation

/s/ Eugene Grin
-----------------------------------------
    Eugene Grin
    President, Chairman, Secretary
    February 14, 2008


Laurus Capital Management, LLC

/s/ David Grin
-----------------------------------------
    David Grin
    Principal
    February 14, 2008


Valens U.S. SPV I, LLC

Valens Capital Management, LLC

By:  Valens Capital Management, LLC
Individually and on behalf of Valens U.S. SPV I, LLC



/s/ David Grin
-----------------------------------------
    David Grin
    February 14, 2008

/s/ Eugene Grin
-----------------------------------------
    Eugene Grin
    February 14, 2008