You should not believe what you read when it comes to the labels of nutrition supplements. Instead, believe what you eat when you see the results. With the increasing popularity of nutrtional supplements for health, fitness and athletic performance, new sports nutrition supplement manufacturers and suppliers are always entering the market. Sports nutrition and diet supplements are not fully regulated and often do not contain the breakdown listed on the labels. Purity levels can also be a concern. Buy from established sports nutrition companies, and don’t just go for the cheapest ... it is usually not the best.