Aspartame. In the early 80's it was given to medical staff by pharma reps by the case. Crystal Light and gum balls. First time I tried it I got a migraine which I had never experienced in my life. A few days later I tried it again and same thing happened. I knew from that moment on that the stuff was bad. I never drink diet soda and rarely drink anything else but water.
Good point anon.
no bueno.
It was a sweetener. Searle drug reps gave it out like candy (literally) to medical office staff.
At the time I had a stick and thought to myself I would get into neutral, use parking brake and turn engine off.