The tablets were given to children, aged between 8 to 12, by the anganwadi centre at Kumbharan Bigha village under Atri police station, District Magistrate Bala Murugan D said.
Altogether 22 children out of 36 who were given the tablet fell ill and were taken to Anugrah Narayan Magadh Medical College and Hospital (ANMMCH) here.
One of them, identified as Roshan Kumar (10), died during treatment in ANMMCH, the DM said adding others were discharged from the hospital late this evening.
Civil Surgeon of Gaya has gone to the village to look into the incident.
