Ive searched the internet for a source for METAPROTERENOL SULFATE SOLUTION and Ive sent emails to 3M, Boehringer Ingelheim, DEY,
Graceway Pharmaceuticals, MORTON GROVE, Novartis. Novex, Par Pharm, Roxio, Sandoz and Watson Labs with no results. Somebody still has to be manufacturing it somewhere but nobody will say who.