0001193125-06-155536 424B3 1 20060728 20060728 PRO PHARMACEUTICALS INC 0001133416 2834 043562325 NV 1231 424B3 33 333-132459 06986204 189 WELLS ST STE 200 NEWTON MA 02459 6175590033 189 WELLS ST STE 200 NEWTON MA 02459 424B3 1 d424b3.htm PROSPECTUS SUPPLEMENT NO.3