I did a tab the other day, and I can't say I had a bad trip but it definetely wasnt good either. I smoked a lot of weed on the come up which was probably a mistake, and for the rest of the trip I had a headache and stressy feeling in my neck. All I wanted to do was lie down the whole time, and looking at any type of a screen made the headache worse. Im hoping that the weed caused the negative effects, and it wasn't the acid.