Doris, you might find Algin helpful. It's a non-digestible fiber that has an affinity for heavy metals such as mercury, barium, cadmium, etc.

Many mercury-toxic people (including me) use Algin on a daily basis to absorb mercury from the colon so it doesn't get redistributed.

As far as killing candida goes, you might consider trying Olive Leaf Extract along with Algin.