oh I like that an intestinally good year!
I don't know. I have heard a wide variety of immodium dosing that has been doctor approved. personally I use Lomotil which is basically Immodium's big brother, I am gun shy to bother with Immodium as that did absolute zero for me when I had active UC and a disease colon, it would probably be different now, but you know how memory goes. anywho I tend to shy away from using Lomotil unless I really need it, because for me it sometimes mimics too closely an obstruction which scares me to death, and also creates a bit of an uncomfortable stoppage in flow for me. and most importantly for me, I see virtually no change in the total number of bowel movements, it just seems to hit the pause button and I just play catch a few hours after the pause effect is run through.
technically immodium has dosing restrictions and warnings but that's is mostly for general population usage. I would just be sure your doctor is okay with what your taking and seek his or her official input. as we are all above average, rules for the general population don't apply to us. ;-)