Medical device manufacturer Fisher Wallace Laboratories has made the Inc. 5000–a list of the fastest growing companies. The maker of a noninvasive electrotherapy device for insomnia, depression, and anxiety, ranks number 983 on the list. Inc. says the company’s three-year growth is 455% and revenues are $2.1 million.

“Given our explosive growth in 2014, I’m confident we will remain on the list next year,” says president Chip Fisher.