ALT Grass-Fed Beef Protein Isolate Raspberry Lemonade 25 Servings 575gRaspberry Lemonade A non dairy, non vegan solution for this growing market segment leverages one of the most bioavailable protein sources: grass fed beef. The top three proteins for synthesis are egg, whey, and beef. While egg protein is highly effective, it can trigger allergies when consumed excessively, making it less ideal as a primary source. Whey is often regarded as the top protein supplement but is unsuitable for those seeking non dairy