EXHIBIT 23.1


     The  undersigned  hereby  consent to the incorporation by reference in this
Registration  Statement  on  Form  S-3  of  the  report of the undersigned dated
December  23,  2003,  relating to the financial statements of Arrowhead Research
Corporation,  which  appears  in  the  Annual Report on Form 10-KSB of Arrowhead
Research Corporation for the year ended September 30, 2003. The undersigned also
consents  to  the  references  to the undersigned under the heading "Experts" in
such  Registration  Statement.


/s/ Kevin Breard, CPA
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KEVIN BREARD, CPA, AN ACCOUNTANCY CORPORATION

Northridge, California
February 23, 2004




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