Bryan Johnston - use the pink pack when stevia is not available, but use stevia. NuNaturals and NOW both have good stevia products.
marti22 - stop using all diet chemicals, and detox your body from their toxic by-products. Begin drinking more water, and select natural drinks like quality teas and juices. If you want a cola, drink a regular clear cola like ginger ale, and limit yourself to one or two a week.
As you detox from these diet chemical toxins, you should begin to return to a more normal state and should sleep better; this will slowly but surely get your back into balance. This should, in turn, decrease your need for the meds to "hold you together." You have been driven by chemicals in both the diet products and in your meds. Allow your body to intake only real foodstuffs, and this should give it what your body needs to be natural and healthy. This is nature's way, you know?