Has anyone tried riboflavin (B2) and/or propranolol (Inderal) for migraine type headaches? My doctor has me trying both for the headaches I have been having lately (100mg of riboflavin and 80mg of propranolol - currently I'm only up to 60mg, slowly working up to that dosage) The headaches have lessen in severity and frequency, but I have noticed my IBS is beginning to act up again. I'm the C/D type and for the better part of the year I've been tending toward the D side. Now it seems that my gut is getting more "gripey", as in it is more crampy, gassy, and C. I'm wondering if what I am taking is having this effect. I did a little research on the web and as near as I can tell, if it is anything, it is the propranolol that is causing the lastest gripe. But, since I have not had problems so far, could the increased dosage be the culprit? For all I know, it's simply a change in the C/D cycle with no specific cause.Has anyone had any kind reaction to taking one of these?