(Original post by laurie:))
he'll want to test for crohn's and ulcerative colitis, and other bowel conditions, which are much much more serious than IBS, if he's anything like my doctor
if you're taking it thrice daily, it'll last until you next have to take it. the medications are called anti-spasmodics because they calm the muscle spasms in the gut wall that is causing the pain. sometimes they wont spasm anyway, which is why you wont notice the medicine wearing off if you forget to take a tablet.
i suspect after a while he might get you to take it as and when you need it, rather than regularly, that seems to help me more, cause i really hated being on such a strict regimen, and this gives me more freedom.
something else that has really really benefited me was peppermint tea. i drink it more regularly than i take the tablets, and it seems to have just calmed things down a bit. if the peppermint tablets are working for you, its worth checking the tea out as well.