In my experience (and reading) the Sugar substitutes may cause headaches. I haven't offered my review of a couple of different brands of Stevia based Sugar substitute yet. I have tested three brands and one of them seems to trigger headaches for me. Yes, I finally suspected the brand of Stevia I was using and changed to a different brand and the headaches were gone. I still had the half full container of that Stevia based sweetener (the brand I suspected gave me a headache) in the back of the cupboard. Well my mother decided that all this headache stuff is in my head (ha) and mixed the old Stevia with the new. I have been putting up with dull headaches for a few weeks now and can't remember how many aspro I have popped in recent weeks. I just discovered what she had done.
I am annoyed by that, but also relieved that I can go back and get the Stevia brand of sweetener that doesn't give me a headache.
Has anyone else been getting headaches?