Question: what is the best medicine to take for ibs?
Answer: Alosetron (Lotronex). Alosetron is designed to relax the colon and slow the movement of waste through the lower bowel. ... 
Eluxadoline (Viberzi). ... 
Rifaximin (Xifaxan). ... 
Lubiprostone (Amitiza). ... 
Linaclotide (Linzess).