Have you ever read the reverse side of a packet of Sugar Twin Original low calorie sweetener? It states:

One pack sweetens like 2 teaspoons of sugar.
Per Packet
Energy 2 cal/8kJ
Protein 0 g
Fat 0 g
Carbohydrates 0.5 g

Contains dextrose, sodium cyclamate (33%). Take only on the advice of a physician.

My question is this. If one should only take on advice of their physician, shouldn't one need a doctor's note to get it in restaurants? Doesn't that leave restaurants open for lawsuits from those who might have some sort of reaction to it?

In my opinion, these kind of sugar substitutes are evil. My cousin who is a RN says that aspartame (which also goes under the name Nutrasweet) changes into formaldehyde due to the heating processes in the body once it is consumed. Sounds scary to me...