EXHIBIT 32.1

                              CAVIT SCIENCES, INC.
                CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350,
                            SECTION 906 CERTIFICATION

Pursuant to 18 U.S.C.  Section 1350, the undersigned  Chief Executive Officer of
Cavit  Sciences,  Inc. (the  "Company"),  hereby  certifies,  to such  officer's
knowledge,  that the  Company's  Quarterly  Report on Form 10-Q for the  quarter
ended June 30, 2008 (the  "Report")  fully  complies  with the  requirements  of
Section 13(a) or Section 15(d), as applicable, of the Securities Exchange Act of
1934 and that the information  contained in the Report fairly  presents,  in all
material  respects,  the  financial  condition  and results of operations of the
Company.


By: /s/ Colm J. King
   ----------------------------------
   Colm J. King
   President, Chief Executive Officer

Date: August 18, 2008