Probolic-SR, the world's first combination protein supplement of its kind, is formulated to provide fast, medium and slow releasing proteins in one advanced formula. The combination of these precise muscle building proteins provides fat greater muscle-building and anti-catabolic benefits than any other single protein supplement. A recent landmark clinical study confirms that consuming a blend of proteins as found exclusively in Probolic-SR supplies a prolonged delivery of highly amino acids to the muscles. This combination increases the muscle-building window, making Probolic-SR a whopping 7X more muscle building than whey for post-workout consumption. Amino acids are the building blocks for muscle tissue, so you must have adequate amounts of aminos to feed your muscles for them to grow. Scientists have identified dive amino acids that are extremely important for stimulating and supporting muscular growth. These are known as the Critical Five Amino Acids - glutamine, arginine, and the BCAAs (leucine, isoleucine and valine). Probolic-SR provides high levels of the Critical Five Amino Acids, thereby increasing its muscle building action. To enhance its already powerful muscle-building/anti-catabolic properties, Probolic-SR contains a patented Sustained Release Micro-Feed Technology that extends the release of amino acids even further for longer action. This breakthrough technology is so advanced, it's patented. If you're looking for explosive muscular growth and maximum effects, you can count on Probolic-SR. It's gym tested and research proven. Test if for yourself. Feed Your Muscles With Probolic-SR - The 12-Hour Muscle Feeder!