Denison Labs. Inc.,60 Dunnell Lane,P.O. Box 1305,Pawtucket, RI 02862,USA,Phone.: 401 7235500 Scot-Tussin Pharmacal, Inc.,50 Clemence Street,P.O. Box 8217,Cranston, RI 02920-0217,USA, Phone.: 401 + 942-8555,fax: 401 + 942-5690