The anti-fungal active ingredients in coconut oil are caprylic acid, capric acid and lauric acid. All three of these are medium-chain, saturated fatty acids that work together to break down the cell walls of microbes such as bacteria, viruses and fungi. Caprylic acid has been used by doctors and naturopaths for quite some time in fighting candida yeast infections. (It's especially effective on patients who have adverse reactions to anti-fungal pharmaceuticals.) Capric acid is the fastest and most effective killer of all three strains of candida, as it goes directly to the plasma membrane of the target cell, disintegrating it almost instantly. Lauric acid is even more unique: unlike other saturated fats, it's not made in the liver. There are only two significant dietary sources for lauric acid: breast milk and coconut oil.