The recommended maximum, if I recall, is 1mg per pound of body weight. You are already exceeding that, so I would send Andy an email or post this to one of the frequent dose chelation groups on yahoo. I very highly doubt Andy would set a maximum dose without a good reason, so you are probably not doing yourself a favor by going up to extreme doses. ALA has other mechanisms in the body, and such high dosages could definitely have unwanted effects.