L glutamin does NOT feed candida. It helps deal with leaky gut - the main cause of candida - L GLutamin and other amino acid will help restore the intestinal lining.
I have used L-GLutamin along with plain jello ( no Sugar no flavor) that I would die with fruit tea and sweeten with stevia or xylitol. Jello is full of amino acid. Amino acid (the basis for protein) is essential to restore damaged gut.