Here is my brief Aspartame story. It doesn’t involve a 60-day break, but maybe it will be useful anyway.
I don’t drink diet colas with Aspartame because each time I did several years ago, I would get this strange tightness in my chest.
No pain, just a little knot somewhere around my heart. This was enough for me to simply stay away from these colas. I’ve had less than 10 of these colas in my life.
I had no idea then (and still don’t) if anyone else has experienced this. In other words, I didn’t drink it thinking that this was a possible symptom. It was a pure observation.