Test of efficiency toltraril S 5% in prevent of coccidiosis in newbron piglet. Compared to other types of medication to diminish problems with piglet diarrhea caused by Isospora suis infection. Experiment in piglets all 634. Experiment 2 group divided 3 replicates (106 heads / group). The first group such as used toltraril S 5% and the two group such as used baycox 5% in pump piglet birth to age 3 day. the results revealed that no significant different among treaments. statistically (P> 0.05) in the average weaning weight / stall, The average weaning/heads, the ADG / stall, ADG / heads, weight gain / stall And weight gain /heads. Including % diarrhea