I have been taking this product alongside my Nutristat Pur Native for the last month and have had great results so far. I am always on the search for supplements that can aid in recovery and this particular form of glutamine really **** out to me. A peptide bonded glutamine that will bypass the intestinal walls for an almost immediate effect. I have not experienced any negatives since taking it. The mixability is great with my protein and creates no bitter after taste. I will recommend this product to anyone that is looking for an extra boost in their everyday life.