Primal defense won't kill Candida, but it will help the microbes that keep candida in check.
Acidophilus is like a "wolf" microbe and candida is the "deer." Too few wolves and the deer overpopulate. So more wolves and the deer get into balance.
Garden of Life's anti-fungal product seems like a good one, they included GSE, which has been shown to be an effective fungal killer, more so than most! :)