Ludmila Buteyko was Dr. Buteyko’s wife and his closest collaborator throughout his career. She was one of the most advanced teachers of the Buteyko Method and worked as the director of education at the Buteyko Clinic in Moscow. Along with Andrey Novozhilov MD, Ludmila Buteyko was the owner of the intellectual property associated with the Buteyko Method, namely the Russian patents and trademarks. Andrey Novozhilov MD, is K. P. Buteyko’s stepson, who worked closely with him for many years. He is the foremost medical authority on the Buteyko Method in the world and is currently the medical director of the Buteyko Clinic in Moscow. Ludmila Buteyko passed away in 2014.