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PROBOLIC-SR - Sustained Release Protein!


Sustained Release Micro-Feed Technology
Pre-Workout, Post-Workout and Before Bedtime
High Levels of the Critical 5 Amino Acids
Rich in Energy Stimulating Fatty Acids


12 Hour Sustained Release – Keep Your Muscles Satisfied!


Probolic-SR’s patented 12 hour Sustained Release Micro-Feed Technology and superior Critical Five Amino Acid Score (CFAAS) has been one of the most popular proteins on the market for years. The combination of this release technology and the scientific balancing of enhanced CFAAS set a new standard in bio-efficiency and enhancing the anabolic effects of protein by giving you something no other protein can: a continual supply of the most critical amino acids including high levels of Glutamine, Arginine and BCAAs for up to 12 hours to stimulate muscle growth, improve recovery and prevent catabolic muscle wasting.


Current research shows that while whey protein has definite advantages, so do casein and soy proteins. But rather than making protein powder choices more confusing than ever for the bodybuilder, it’s actually easier to ensure that you get the most from your protein powder. Just choose all three – whey, casein and soy protein powder – before and after workouts, between meals and any time that calls for a protein shake.”
– Muscle & Fitness

Probolic-SR represents a major scientific advancement in protein supplement technology. The sophisticated protein/amino acid matrix and patented sustained release micro-feed delivery system offers athletes a hi-tech solution to improve their bio-efficient protein intake.”
– Daniel Gastelu, M.S., Training and Nutrition Expert, Author of the 2007 Bodybuilding and Sports Supplement User’s Guide

When I switched from taking whey to Probolic-SR, I immediately felt its superior anabolic effects. My muscles are bigger, harder and fuller than ever before. I also recover much faster. This allows me to train heavy and hard every workout.”
– Victor Martinez 2007 Arnold Classic Champion

Patented Technology Increases Anabolic/Anti-Catabolic Effects for Enhanced Muscle Building!

• Patented Sustained Release Technology Feeds Muscle for up to 12 Hours
• Superior Anabolic/Anti-Catabolic Matrix
• Good Anytime- Morning, Pre- and Post-Workout and Nighttime
• High Levels of Glutamine, Arginine and Branched Chain Amino Acids- The Critical Five

While many independent sports nutrition experts and pro-bodybuilders agree that a combination of different proteins is better than whey alone, there is even more to the history-changing Probolic-SR protein breakthrough.

This advanced bio-engineered protein utilizes patented technologies to help overcome protein’s natural limitations on nitrogen retention and muscle growth. Probolic-SR has set new standards in protein quality, bio-availability and anabolic and anti-catabolic muscle building.

As Glutamic Acid


When MHP launched Probolic-SR, it revolutionized the industry and became our new gold standard in protein supplementation. Probolic-SR’s bio-engineered protein was designed to exhibit high bio-availability, amino acid levels and nitrogen retention for maximum anabolic effects to trigger greater muscle growth. Probolic-SR contains a scientifically balanced bio-engineered matrix of high quality muscle building amino acids from the finest quality whey, soy and casein proteins, developed to provide extra amounts of the vital muscle building critical anabolic amino acids.

Additionally, Probolic-SR takes a quantum leap beyond other proteins by employing a 4 stage, 12 hour sustained release Micro-Feed Technology. This patented advanced technology provides your muscles with a bio-efficient steady delivery of protein to trigger muscle growth and support recovery day and night. MHP’s unique Micro-Feed Technology is perhaps the biggest development ever in protein supplementation. Other companies actually offered MHP large sums of money to relinquish this secret technology, but MHP isn’t interested in sharing our proprietary technology and we plan to keep this proprietary technology exclusive to Probolic-SR and our legion of bodybuilders and athletes who rely on MHP to help them meet their muscle building goals.

All told, Probolic-SR’s technological advancements make it an extraordinarily effective and powerful muscle building agent. Probolic-SR’s anabolic and anti-catabolic properties go beyond other proteins.

Overcoming Protein’s Limitations to Enhance Muscle Growth!

Protein’s limitations on achieving and maintaining the anabolic environment needed to augment large increases in muscle mass have been an enigma for the scientific community. If a positive nitrogen balance (from protein) is the needed anabolic stimulus for muscle growth, then why doesn’t consuming large amounts of high quality proteins like whey, casein, soy and egg produce the expected gains in muscle mass?

During MHP’s research effort into this question, our researchers analyzed virtually every known dietary source of protein for their Amino Acid Composition (AAC), Biological Value (BV), Protein Digestibility Correct Amino Acid Score (PDCAAS), Protein Efficiency Ratio (PER) and Rate of Absorption (RA)-the rate in which the protein releases amino acids. We also analyzed the amino acid composition of human muscle tissue and the effects of resistance training on nitrogen depletion and muscle tissue remodeling. We found that:

• No single protein source in nature is capable of maintaining and sustaining positive nitrogen balance for exerting the desired anabolic effect for maximum muscle growth.

• No single protein source provides the optimal levels of key Critical Five Amino Acids (Glutamine, Arginine, Leucine, Isoleucine and Valine).

• Whey protein can work best when combined with other proteins. While whey’s fast release rate is good for quick, post-workout replenishment, it’s not necessarily ideal for maintaining the maximum anabolic/anti-catabolic muscle building state. Whey combined with slower releasing proteins such as soy and casein is beneficial for creating better anabolic/anti-catabolic effects.

• Specially manufactured soy isolates have many unique anabolic properties with impressive bio-availability (a perfect score of 100) and high levels of key amino acids such as glutamine, arginine and BCAAs.

• Casein’s slower release rate has better anabolic/anti-catabolic effects than whey to support sustained muscle growth and recovery and is another protein that when combined with whey and/or other proteins has even greater muscle building effects.

The Scientific Breakthroughs Behind Probolic-SR

With these findings, MHP researchers embarked on formulating Probolic-SR. The biggest challenges in bio-engineering a more powerful anabolic protein were altering the protein’s amino acid composition and controlling the release rate. It was evident that the only way to achieve the desired anabolic/anti-catabolic effects was to bio-engineer a protein utilizing a succinct combination and ratio of various protein sources and employ a special release technology to improve nitrogen balancing and modulation. First, by bio-engineering an advanced protein matrix delivering a complete profile of muscle building amino acids, high in the Critical Five Amino Acids, establishing new standards in amino acid scores; Second, the development of a patented sustained release delivery system, utilizing newly created MICRO-FEED TECHNOLOGY.

New Standards in Amino Acid Scores

The World Health Organization and protein manufacturers use a method known as PDCAAS (Protein Digestibility Correct Amino Acid Score). Protein manufacturers have been using this method to determine the value of their proteins and many proteins such as whey, casein, soy and egg all have perfect scores of 100. However, we note two major flaws with this method relative to bodybuilders and muscle growth. The first flaw is that this score is based on pre-school children’s protein needs. We know that an adult bodybuilder’s protein needs are far greater than a pre-school child’s. Perhaps an even bigger flaw is that this score only takes into account essential amino acids and does not include the very important “conditionally essential” amino acids arginine and glutamine. From MHP’s extensive research on evaluating proteins and muscle tissues amino acid composition, we determined that the five most important aminos for muscle growth in response to training are glutamine, arginine and the branched chain amino acids Leucine, Isoleucine and Valine. These amino acids provide the greatest anabolic response and are needed to support muscle tissue remodeling in response to heavy training. These 5 amino acids are what the protein industry is now calling the Critical Five and they are established as a new standard in measuring the value of a protein called the Critical Five Amino Acid Score (CFAAS). In the development of Probolic-SR, the MHP research staff developed a scientifically formulated protein matrix of whey, soy and casein to provide high levels of essential amino acids and yield the high levels of Critical Five Amino Acids.  Probolic-SR balanced this matrix with free form isoleucine, leucine and valine making Probolic-SR a superior concentrate of the Critical Five Amino Acids.

Patented Micro-Feed Technology: The 12 Hour Muscle Feeder!

This pharmaceutical delivery system is designed to provide a continual supply of amino acids for up to 12 hours. The Micro-Feed Technology works similar to continually supply high concentrations of the Critical Five Amino Acids so that you can sustain an anabolic muscle building state and reduce catabolic muscle depletion. This technology helps achieve nitrogen-balancing modulation and also increases bio-availability.


Let us give you some information regarding protein’s true Biological Value, utilization and ability to maintain a positive nitrogen balance. The protein industry and scientists have been using Biological Value (BV) as a measure of protein quality. Many proteins such as whey and whole egg are given a perfect score of 100, which gives consumers the impression that every gram ingested is utilized. NOT SO—our findings found that these values are based on relatively low dose consumption (only 9-18 grams of protein) and does not take into account the protein’s digestibility and absorption rate. When larger doses are taken, such as 40-60 grams, the amount commonly consumed by bodybuilders, not all of the protein is utilized. Some of it is converted to the waste products urea and ammonia, and can even be converted to body fat. This helps explain why large dose protein consumption doesn’t necessarily produce the desired anabolic effects you might expect. The research also found that the varying release rates of proteins influence their Biological Value, utilization and ability to supply nitrogen. While the whey industry has done a good job trying to lead you to believe faster is better in terms of release rates, new studies show that slower releasing proteins can provide greater anabolic and anti-catabolic effects. Therefore, our research indicates that the ideal protein would provide fast, medium and slow release rates. It is important to realize that when it comes to building muscle, anti-catabolic properties are just as important as anabolic properties.

Exclusive 4-Stage Release Makes Probolic-SR the “Anytime” Anabolic Protein

Due to Probolic-SR’s unique sustained release delivery system, it quickly became the protein supplement of choice for pre-workout and nighttime use. But Probolic-SR can be actually be used “anytime”, due to its exclusive 4-stage time-phased delivery system. This unique blend of proteins provides a fast, medium and slow release of Amino Acids and is further prolonged with the patented Micro-Feed Technology! This advanced release profile supplies the needed quick release (0-2 hours) of amino acids for post-workout replenishment of nitrogen. It is also perfect for pre-workout because its medium and slower release (hours 2-6) will keep supplying aminos and keep you in an anabolic state throughout your entire workout and prevent going into a catabolic state. It keeps delivering amino acids to your muscles for up to 12 hours. When taken before bedtime Probolic-SR’s Micro-Feed Technology will supply high levels of the Critical Five Aminos and help keep you anabolic all night! Probolic-SR will help ensure you don’t never slip into catabolism between meals, during workouts or during the night while you sleep and help keep you in “positive nitrogen balance” and anabolic overdrive!

What is Probolic-SR and how does it work?

Probolic-SR is a revolutionary protein blend consisting of fast, medium and slow release proteins (whey, soy and casein, respectively). Clinical research has shown this precise blend of proteins to be superior to single source proteins. But it gets even better: to improve and extend your anabolic growth potential even further, MHP has enhanced the proteins in Probolic-SR by adding a patented Sustained Release Micro-Feed Technology. This micro-feed system employs a proprietary natural coating to microencapsulate the proteins to meter their release in the stomach. As the natural coating erodes, the proteins are exposed to gastric juices and then dissolved so that they can become absorbed into the bloodstream. This groundbreaking technology used in PROBOLIC-SR allows for a continual supply of amino acids to your muscles for up to 12 hours!

Is Probolic-SR Better than Whey Protein?

A ground breaking clinical study showed that the protein blend used in Probolic-SR is indeed superior to whey protein alone (Reidy et al., 2014). In this study, researchers compared the blend of proteins in Probolic-SR to a whey protein supplement. Subjects were given the protein supplements following a bout of resistance exercise. Results showed a 7X greater anabolic response in muscle over 4 hours post-workout following consumption of Probolic-SR’s protein blend verses whey protein alone! The researchers explained that these benefits were due to Probolic-SR’s protein blend providing a sustained release of amino acids into muscle tissue to further support muscle growth and recovery.

When should I Take Probolic-SR?

Before bed, between meals, after exercise…MHP’s Probolic-SR is your all day, anytime protein choice! Probolic-SR not only supplies the quick release of amino acids needed for rapid post-workout recovery and muscle growth, but also provides a sustained release of amino acids which research shows is critical for continued muscle building hours after exercise. Probolic-SR is also perfect when taken before bedtime, as its Micro-Feed Technology will supply amino acids all night so you can avoid a catabolic catastrophe and stay anabolic while you sleep!

Why Is Probolic-SR Ideal For People Dieting?

When dieting, calories are at a premium and it is critical that dieters consume the highest quality foods to maximize muscle anabolism. Probolic-SR is the ideal protein supplement for anyone on a reduced calorie diet. It allows athletes to consume fewer calories, but still provides a superior anabolic effect by sustaining muscle growth for hours long after consumption. Furthermore, the sustained release of amino acids will provide superior satiety benefits, helping to stabilize blood glucose and abate hunger.

Who Would Benefit From Probolic-SR?

Both men and women who are interested in optimizing muscle growth, speeding recovery and increasing exercise performance. It takes extreme diligence for athletes to consistently consume the protein they need to fuel their bodies. Fortunately, with Probolic-SR you can get the protein you need in a delicious, convenient shake.

Is Soy Protein Bad for Men?

This is a common bodybuilding myth that has been categorically disproved by real science! The perception often found among men is that soy can decrease testosterone. However, a mathematical review of multiple studies (meta-analysis) demonstrated that supplementation with soy proteins had no effect on testosterone, sex hormone-binding globulin (SHBG), free testosterone or the free androgen index (Hamilton-Reeves et al., 2010). Beyond this, research suggests that soy protein may lower cholesterol and support cardiovascular health, among other health benefits (Erdman, 2000).

What Flavors Does Probolic-SR Come In?

Probolic-SR comes in a variety of delicious flavors including Chocolate, Vanilla, Triple Chocolate Cookie, Cookies n’ Cream, Banana Cream and Strawberry!

How should I Take Probolic-SR?

Mix 1-2 scoops with 8-16 oz. of cold water. Probolic-SR mixes instantly in a shaker bottle or glass. For a thicker shake, blend with ice for desired consistency.

How should Probolic-SR Be Stored?

Probolic-SR should be stored in a cool, dry place and kept from heat, light and moisture.

Are there allergens in Probolic-SR?

Probolic-SR contains milk, soy and fish products (from omega fats).

Erdman, J. W. (2000). AHA Science Advisory: Soy protein and cardiovascular disease: A statement for healthcare professionals from the Nutrition Committee of the AHA. Circulation, 102, 2555–2559. doi:10.1161/01.CIR.102.20.2555
Hamilton-Reeves, J. M., Vazquez, G., Duval, S. J., Phipps, W. R., Kurzer, M. S., & Messina, M. J. (2010). Clinical studies show no effects of soy protein or isoflavones on reproductive hormones in men: Results of a meta-analysis. Fertility and Sterility, 94, 997–1007. doi:10.1016/j.fertnstert.2009.04.038
Reidy, P. T., Walker, D. K., Dickinson, J. M., Gundermann, D. M., Drummond, M. J., Timmerman, K. L., … Rasmussen, B. B. (2014). Soy-Dairy Protein Blend and Whey Protein Ingestion After Resistance Exercise Increases Amino Acid Transport and Transporter Expression in Human Skeletal Muscle. Journal of Applied Physiology (Bethesda, Md. : 1985), 1353–1364. doi:10.1152/japplphysiol.01093.2013


*These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure or prevent any disease.

Available Flavors
  • Triple Chocolate Cookie
  • Vanilla
  • Cookies n’ Cream
  • Banana Cream
  • Strawberry
Available Sizes / Price
  • 2lb Bottle $41.99
  • 4lb Bottle ( Vanilla & Chocolate Only) $71.99
Helps You With…
  • Bodybuilding
  • Fitness
  • Strength
“Just wanted to let you know that I’m impressed with your product! This is the first time I’ve used protein powder in several years and your product is far superior to what I used to use. Keep up the good work!”

Jim Carl, GA


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