See: Mercury amalgam Mercury
[2009 July] 'Heartburn pills wrecked my life': How antacids can have serious side-effects her problems stemmed from the lack of an everyday vitamin, caused by medicine commonly prescribed for ulcers and heartburn - and that Andrea discovered the problem herself by searching on the internet. Andrea was suffering from pernicious anaemia, because of a deficiency of vitamin B12. This vitamin is essential for producing red blood cells and for maintaining a healthy nervous system, specifically the fatty sheath that protects the nerve cells.
VITAMIN B12 LEVELS AND MERCURY - A LINK WITH MULTIPLE SCLEROSIS AND OTHER DISORDERS
''Cobalamin (the bit that hasn't got methyl on it - also known as B12) spends its time floating around looking for heavy metals. It binds to the heavy metals, and the kidney looks out for cobalamin bound to heavy metals (mercury is a heavy metal) and flushes them out in the urine. Actually cobalamin looks for most toxins and flushes them out of the body - that's one reason why alcohol and smoking both reduce your amount of B12 (and cause all sorts of nasty diseases) - because the B12 is doing its best to remove the toxins and is being removed at the same time.'' http://www.b12d.org/methylmercury-myth