Direct manufacturer of nutritional supplements Muscle Feast is a family owned and operated nutritional supplement manufacturer, specializing in providing all natural nutritional supplements. Muscle Feast manufactures and distributes all natural whey protein isolate, micellar casein, hydrolyzed whey protein, maltodextrin, waxy maize, meal replacers and weight gain products. We also have a full line of amino acids, creatine monohydrate, pre and post workouts. Superior Nutrition for Healthy Lifestyles.