what is prescribed for ibs?
See Prices. Symax SL (hyoscyamine) is an anticholinergic used to treat irritable bowel syndrome (IBS) and peptic ulcers. It controls muscle spasms, which can ease symptoms of IBS and allow for faster healing of ulcers. Symax SL is a sublingual tablet, also available as Hyomax SL and generic hyoscyamine.UBIPROSTONE is a laxative. It is used to treat chronic constipation and constipation caused by opioids (certain prescription pain medicines). It is also used to treat adult women with irritable bowel syndrome who have constipation.