Keveyis

For four decades, Don Anderson of Seattle has been taking the same drug to help control the temporary bouts of immobility and muscle weakness caused by a rare and frightening genetic illness called periodic paralysis.

Sun Pharmaceuticals Industries' shares fell nearly 4 per cent on Tuesday after its New York Stock Exchange-listed subsidiary Taro Pharmaceutical stopped commercial sales of Keveyis, a drug used in treatment of periodic paralysis.

For four decades, Don Anderson of Seattle has been taking the same drug to help control the temporary bouts of immobility and muscle weakness caused by a rare and frightening genetic illness called periodic paralysis.

Sun Pharmaceuticals Industries' shares fell nearly 4 per cent on Tuesday after its New York Stock Exchange-listed subsidiary Taro Pharmaceutical stopped commercial sales of Keveyis, a drug used in treatment of periodic paralysis.