I have not tried it myself. However, I am aware of someone with chronic yeast vaginitis that after trying diet and Rx for months without result took Cimetidine and Zinc for 3 months and was cured.
Cimetidine is the most powerful cell-mediated immune modulator you can find.
If I try it, I will take Nystatin too to attenuate its antiacid effects even when is good to take it away from meals.
800 mg a day for 3 months plus a systemic and a non-absorbed antifungal may solve it. Transfer Factor has been successful in many cases. Cimetidine is better boosting cell-mediated immunity.
The most important is to restore an immune response to eliminate the infection. This will keep away the immune suppression caused by candida albicans. Then, you have chance to work toward improving your acquired immune imbalance chelating and adapting good nutrition.