Remember that supplement industry is not regulated and there are no standards for what type of ingredients are used...Be careful with protein supplements or any other supplements because a lot of them are loaded with artificial sweeteners and chemicals. Read the labels. The less ingredients it has the better...Personally I prefer to buy the unsweetened and unflavoured ones.. If it's sweetened with Stevia it's acceptable because it's a natural plant sweetener and usually only used in small amounts, but I would avoid anything that has Sucralose or Aspartame or any other chemical sweetener.