Two pills-Detective Riddle

Jaikal consecutively kidnaps people and makes them take one of the two pills. One was harmless, the other was poisonous. Whichever pill the victim took, Jaikal took the other one. The victims always took the pills and died. Jaikal always survived. How did he always get a harmless pill ?

Jaikal was tricking people. The poison was in the glass of water his victims drank, not in the pill. Jaikal was tricking people. The poison was in the glass of water his victims drank, not in the pill.