Metallic taste in one's mouth is definitely a symptom of metal toxicity. Also, it might have messed with their thyroid, thus the hypo/hyper vacillations, which might mean they have Hashimoto's thyroid disease (back and forth is a symptom).

If you go to www.stopthethyroidmadness.com website they have info on Hashis and how to treat it. You can still treat it wihile you are mercury poisoned, in you really need to in order to survive detox (the fatigue and joint and bones aches).

There is a section on Herb Allures (Russ's website) that has a list of mercury poisoned symptoms, you and your friend can check that out to get an idea where you are. Another good website to get info is www.mercurypoisoned.com.

Gabriella