Several companies have been on the receiving end of lawsuits claiming lack of protein in their supplements. A large number of the companies in this $7 billion industry are being accused of selling products with less protein content than what they advertise on the label. “Arnold Schwarzenegger Series Iron Mass, for instance, contains half the protein stated on its label, according to third party testing in one lawsuit”. FDA regulations require that content labels on all dietary supplements be accurate and not misleading to the consumers. In this case the expectation is that protein content be evaluated based on actual protein sources, not fillers such as amino acids.