I have trouble with Aspartame myself it causes me to have intraocular migraines. I get visual disturbances but no headache-and MSG also does this to me.
Needless to say, I stay away from Aspartame. I had been on Weight Watchers and was drinking 2-3 quarts of Crystal Light per day-lemonade-and started having the intraocular migraines. Now all I have to do is have about 1/2 of a cola or yogurt with Aspartame and there goes my eyes again. I have learned my lesson, no more Aspartame for me.