Wanted to let those of you who are suffering from Chronic Fatigue Syndrome that L-carnitine or Acetyl L-carnitine has been proven by medical tests to help improve symptoms of weakness and physical stamina. However, you must take around 2 grams per day and give it lots of time. It took me several months. I began to be able to take small walks and hikes, if I have a day or two of rest in between, and I began to be able to do some gentle yoga, with rest in between. I must still be careful not to overdue. 1/2 to 3/4 mile of walking is about my limit for now. I am going through much psychological stress right now, which is working against me, but still I am fairing much better since I have started taking L-Carnitine. L-Carnitine is available as a prescription med called "Carnitor" for those of you who have health insurance. There is also a patient assitance program for those who don't. Thought I would share this with all of you.