https://www.leanproteinsettlement.com/submit-claim.php -you qualify if you purchased CytoSport Whey Isolate Protein Drink, Monster Milk: Protein Power Shake, Genuine Muscle Milk: Protein Nutrition Shake, Muscle Milk Pro Series 40: Mega Protein Shake products between January 23, 2011 to May 5, 2020. No proof of purchase is necessary.