Hi Diane,

No, there is no problem to take DMSA if you had already eaten. Just stick to taking DMSA on time, every 4 hours, and you should be fine. As for caffeine and sugar,they are both highly addictive. If you were hooked on both before, then suddenly stopping them would make you crave them and cause all the withdrawals associated with addiction. An addition of caffeine into you system would disrupt the chelation. I suppose that that would have you chelate longer, which is already a long process. Try exercise instead of caffeine. This could lift your mood.

Best