i was taking Levsin: 2 tablets of .125 mg/each 4 times daily - so 8 tablets daily of Levsin(a brand name for: HYOSCYAMINE). mind you, you should start out on like 1/2 tablet to see what happens and then build slowly. my guess is the sideeffects will eventually get to you. you may get blurry vision and then see kidn of spots - this is b/c its relaxing the muscles in your eyes. its kind of odd looking. your pupils will probably dilate a bit. after a while this effect diminishes, but it can linger as mildly blurry vision and also having things kind of go in and out of focus. though you may not need as much as I did so you may be able to avoid these problems. i think this drug is pretty good at reducing bloating due to spasms and also at helping with C even though it slows things down. if you have C b/c your intestines are overworking and tense, then it will help. some say it helps wiht D, but i found that it gave me D on lower dosages - made the urgency MUCH worse. on higher dosages it did the opposite. i know this doesn't make sense, but its true! there is evidence that serotonin has the effect in that it can give a person diarhea at small dosages and then make a person constipated as higher. i think the problem with treating ibs is that you are basically messing with a moving, muscular tube that propels something out - its probably fairly complicated physics involved there to do with timing of contractions, degree of pressure etc., so whenever you slow things down or speed things up you might be causing all KINDS of effects, not necessarily the ones you'd expect.
