 MuscleTech Research and Development Inc was a Canadian company based in Toronto that operated with a group of closely related companies, and developed the Hydroxycut product line.Thousands of lawsuits were filed over ephedra in the early 2000s; the first lawsuits against MuscleTech began in 2000 and by 2004 there were about 80 pending.In 2003 and 2004, most of the assets of the MuscleTech group of companies were sold off to other companies, including Iovate Health Sciences; the same person controlled MuscleTech and Iovate.