It triggers a headache for me as well. Happens whether I'm previously aware of its presence in the product or not. I'm fine accepting that it's a generally safe chemical that has been thoroughly studied and I just have a quirk, but I also don't want my quirk to be dismissed because studies don't validate it.

The headaches are replicable and severe enough that it's turned me off of all artificial sweeteners, although I doubt they all have the same effect. I don't want to risk it.