I started feeling really nauseous and fatigued on days 5 - 9 of the therapy (I don't have the drug names with me. I'm on the road for work now), but the muscle weakness didn't start until after I finished the drug therapy.
Thanks for the suggestions. The muscle weakness/tremors seem to be subsiding as my appetite has increased, but I'm sure the vitamins you suggested with be helpful.
I'm still passing dead parasites, so maybe the toxins load in my body is decreasing.