Yes it has 40 grams of protein and only 9 grams of carb (zero sugar), but it contains something called Acesulfame Potassium, which is an artificial sweeter. I am not a doctor, but there are two issues I have with drinking Labrada and Acesulfame K: 1) your mouth will get serious dry mouth after you drink this; and 2) supposedly it causes cancer. Learn more here: [...] Acesulfame K Acesulfame Potassium (K) was approved for use by the FDA as a safe artificial sweetener in July, l988. It is a derivative of acetoacetic acid. Unfortunately, several potential problems associated with the use of acesulfame have been raised. They are based largely on animal studies since testing on humans remains limited. The findings showed the following: Acesulfame K stimulates insulin secretion in a dose dependent fashion thereby possibly aggravating reactive hypoglycemia ("low blood sugar attacks"). Acesulfame K apparently produced lung tumors, breast tumors, rare types of tumors of other organs (such as the thymus gland), several forms of Leukemia and chronic respiratory disease in several rodent studies, even when less than maximum doses were given. According to the Center for Science in the Public Interest, it was petitioned on August 29, l988 for a stay of approval by the FDA because of "significant doubt" about its safety. Dr. H.J. Roberts, Aspartame (NutraSweet) Is It Safe?, Charles Press, page 283/84