Exhibit 16 [LETTERHEAD OF SCILLIA DOWLING & NATARELLI LLC] Securities and Exchange Commission 450 5th Street, N.W. Washington, D.C. 20549 Gentlemen: We have read and agree with the comments in Item 4 of Form 8-K of Pro-Pharmaceuticals, Inc. dated February 25, 2002. /s/ Scillia Dowling & Natarelli LLC Hartford, Connecticut February 25, 2002