I'm just starting on my fourth month of taking Hydroxy, and had few side effects to start with. Since starting the most recent prescription, I feel terrible - sick and trembly with palpitations. This seems like low blood sugar (I'm not diabetic) but is scarey, as I live alone. I notice that the last box was a mix of "Plaquenil" and "Quinoric", and this is Quinoric only. I have never before noticed any difference between one brand of a med and another. Could this be the problem? It could, of course, be just a coincidence. Grateful for any help.