Capstar 11.4mg/57mg Presentation White to light yellow, round, biconvex tablets, with bevelled edges. Capstar 11.4mg tablets:11.4mg nitenpyram imprinted on one side with ``RB'', on the other side with ``CG''. Capstar 57mg tablets: 57mg nitenpyram imprinted on one side with ``HIH'', on the other side with CG''.