Exhibit 5.1

                                  June 10, 2008

Colm King, President
Cavit Sciences, Inc.
1600 South Dixie highway, Suite 500
Boca Raton, Florida 33432

Re: Cavit Sciences, Inc. - Registration Statement on Form S-1

Dear Mr. King:

     We have acted as counsel to Cavit  Sciences,  Inc.,  a Florida  corporation
("Company"),  in connection with the filing of a Registration  Statement on Form
S-1,  filed  with the  Securities  and  Exchange  Commission  on June  10,  2008
("Registration  Statement"),  which  relates to the  registration  of  5,813,334
shares of common stock,  $.01 par value, of the Company  consisting of 2,500,000
issued and  outstanding  shares  (collectively  the  "Outstanding  Shares")  and
3,313,334  shares  (collectively  the  "Warrant  Shares")  to be issued upon the
exercise  of   3,313,334   common  stock   purchase   warrants  of  the  Company
(collectively the "Warrants")

     This letter is being  furnished as your request and in accordance  with the
requirements  of Item 601(b) (5) of Regulation  S-K under the  Securities Act of
1933, as amended ("Act").

     The  opinions  set  forth  in this  letter  are  subject  to the  following
qualifications:

     1. In  rendering  this  opinion,  we have  examined  originals  or  copies,
certified or otherwise  identified to our satisfaction,  of (i) the Registration
Statement,  (ii) the Articles of Incorporation,  as amended,  and By-Laws of the
Company;  (iii) such  evidence of  incumbency  of directors  and officers of the
Company as we have  deemed  appropriate,  (iv) such  evidence  of the  corporate
proceedings of the Company as we have deemed appropriate,  (v) such certificates
of officers of the Company as we have deemed appropriate, (vi) such certificates
of public officials as we have deemed appropriate and (vii) such representations
and warranties of the selling  shareholders  as we have deemed  appropriate  and
(viii) such agreements and instruments as we have deemed appropriate.

     2. We have assumed  without  inquiry or other  investigation  (a) the legal
capacity  of  each  natural  person,  (b) the  genuineness  of  signatures,  the
authenticity of any document  submitted to us as an original,  the conformity to
the original of any document  submitted to us as a copy and the  authenticity of
the original of any  document  submitted to us as a copy and (c) the accuracy on
the date of this letter,  as well as on the date made,  of each  statement as to
any factual matter made in any document submitted to us.

     3. We do not express any opinion  concerning any law other than the Florida
Business  Corporation Act and reported judicial decisions addressing the Florida
Business Corporation Act.

     4. Any opinion  set forth in this  letter (a) deals only with the  specific
legal issue or issues it explicitly addresses and (b) does not address any other
matter  (including,  but not limited to,  except as expressly  set forth in such
opinion, any matter concerning the contents of the Registration Statement).

     5. This letter is given without regard to any change after the date of this
letter  with  respect  to any  factual  or legal  matter,  and we  disclaim  any
obligation to notify you of any such change or any effect any such change on any
opinion set forth in this letter.

     Subsequent  to the  qualifications  set  forth  in this  letter,  it is our
opinion  that under the  Florida  Business  Corporation  Act,  the  Articles  of
Incorporation (as amended) and the By-Laws of the Company:

     1.   The  Outstanding  Shares  have been duly  authorized  and are  legally
          issued, fully paid and nonassessable;

     2.   The Warrants have been duly authorized and are legally issued; and

     3.   Assuming that (a) the Warrants are duly  exercised in accordance  with
          their terms and (b) the exercise price of the Warrants is duly paid in
          the  manner  contemplated  by  the  Registration   Statement  and  the
          Warrants,  the Warrant Shares will be legally  issued,  fully paid and
          nonassessable.

     We  consent to the use of this  letter as an  exhibit  to the  registration
Statement  and to the reference to us under the heading  "Legal  Matters" in the
prospectus that is a part of the Registration Statement. In giving such consent,
we do not admit that we are in the category of persons whose consent is required
under  Section  7 of the Act or the  rules  and  regulations  of the  Commission
thereunder.

Very truly yours,


/s/ David E. Wise
- -------------------------------
DAVID E. WISE, ATTORNEY AT LAW