Phd nutrition tricellar whey is a fast acting protein shake it is made up of whey protein isolate and micellar caseinr protein is the key building block for building or maintain muscle phd nutrition tricellar whey utilises whey protein isolate micellar casein and hydrolysed whey protein to help provide with fast acting and slow release proteinr fastslow protein formulas not only act quickly to help muscle re build but also provides a slower and more sustained release of amino acids ndash