Thanks for the reply Edge. Tried it this morning and wound up getting a migraine aura an hour later and a [thankfully] low level migraine. I'm very cautious about what i eat since i developed repeated migraines a few yrs ago. Cut a lot of 'trigger' foods and now they're very rare. I'll attribute this one to the Red Bull...might have been the caffiene or whatever else is in there. Shoulda thought first but there it is. No Red Bull for me. Haven't noticed anything other than the headache tho. Damnity damn damn...oh well.