To help combat constipation it would be a good idea to not just juice vegetables, but also to eat plenty of them. Many here suffer from constipation. I think this is due to candida overgrowth and also perhaps insufficient bile production? The body releases most of the mercury excreted via the the bowel(through the bile), so it is important to combat constipation. Also due to the fatigue and perhaps also fibromyalgia many here don't get enough exercise. A lack of exercise contributes to constipation.

Some vegetarians with fatigue experience greater energy levels when taking 1,000 to 2,000 mg a day of carnitine supplements.

Another thing I find helpful is Triple Leaf Detox Tea. I tried a few other Detox Teas(Yogi, Long Life, Alvita), and the Triple Leaf seems to give me the most relief.