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GNC Pro Performance® Mass XXX™ - Vanilla Milkshake

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Price: $71.99

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Lean Mass Builder Suitable for collegiate Athletes
  • 50g of High-Quality Protein and 750 Calories for Adding Mass
  • Clinically Shown to Build Mass, Strength and Endurance
  • BCAA and MCTs for Rapid Muscle Fuel.
    GNC Pro Performance Mass XXX is GNC's first clinically studied mass builder: scientific research has shown this formula increases lean mass, muscular strength and endurance with less work in the gym. GNC Pro Performance Mass XXX is the right mass building formula to help fuel your muscles with critical nutrition they need and to help you drive towards your goal of gaining mass and muscle strength.

    Getting the precise amount of calories your muscles need, including a balance of quality protein, carbohydrates, essential amino acids and micro nutrients, is critical for driving rapid results. that's why GNC Pro Performance Mass XXX is powered by a mega-dose of 50g of high-qaulity protein, which gives your muscles the amino acids they need to maximize your potential. GNC Pro Performance Mass XXX supplies the conditionally essential amino acid Arginine to help fuel nitric oxide production to fuel vascularity, pumps and nutrient delivery. This formula is also powered with essential BCAA (branched chain amino acids) isoleucine, leucine and valine to protect against muscle breakdown and to fuel protein synthesis.

    GNC Pro Performance Mass XXX fuels energy with added MCTs (medium chain triglycerides) which are quickly absorbed. More energy is critical to help you fuel the type of training you need to build maximum size and strength. What's more, this formula is powered by a unique blend of carbohydrates, including a complex carbohydrate component (maltodextrin and fiber) for sustained energy.Mix a serving of GNC pro Performance Mass XXX in 2% milk and you get 66g or quality protein for your muscles, 147g of carbohydrates to give you the energy you need and 990 mass building calories for rapid results! The combination of protein, carbs and fat found only in GNC Pro Performance Mass XXX helps to provide the extra calories you need to put on the added pounds that you want!Typical Natural Occuring Amino Acids per 50 Grams of Protein:
    • Alanine 2151mg
    • Arginine 1673mg
    • Aspartic Acid 5048mg
    • Cystine 993mg
    • Glutamine 8877mg
    • Glycine 1068mg
    • Histidine 1113mg
    • Isoleucine 2892mg
    • Leucine 4968mg
    • Lysine 4106mg
    • Methionine 1058mg
    • Phenylalanine 1960mg
    • Proline 3099mg
    • Serine 2549mg
    • Threonine 2877mg
    • Tryptophan 937mg
    • Tyrosine 1733mg
    • Valine 2898mg
    • TOTAL 50000mg

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

    Supplement Facts

    On training days take 1 serving within 30 minutes after your workout. On non-training days take 1 serving first thing in the morning. For best results, take twice daily on training and non-training days.

    Nutrition Facts
    Serving Size 4 level scoop(s)
    Servings Per Container 14
    Amount Per Serving % DV
    Calories 740.00
    Calories from Fat 45.00
    Total Fat 5.00 g 8%
    Saturated Fat 3.00 g 15%
    Trans Fat 0.00 g
    Cholesterol 110.00 mg 37%
    Sodium 550.00 23%
    Total Carbohydrate 123.00 g 41%
    Dietary Fiber 0.00 g 0%
    Sugars 20.00 g
    Protein 50.00 g 0%
    Calcium 400.00 40%
    Iron 1.80 10%
    Vitamin A 0.00 0%
    Vitamin C 0.00 0%
    ** Daily Value (DV) not established
    † Percent Daily Values are based on a 2000 calorie diet.
    Your daily values may be higher or lower depending on
    your calorie needs:
      Calories: 2000 2500
    Total Fat Less than 65 g 80 g
      Sat. Fat Less than 20 g 25 g
    Cholesterol Less than 300 mg 300 mg
    Sodium Less than 2400 mg 2400 mg
    Total Carbohydrate   300 g 375 g
      Dietary Fiber   25 g 30 g
    Calories per gram:
    Fat 9 • Carbohydrate 4 • Protein 4

    Other Ingredients: Maltodextrin, Mass XXX Protein Blend (Whey Protein Concentrate, Soy Protein Isolate, Calcium Caseinate), Natural and Artificial Flavors, Medium Chain Triglycerides, Lecithin, Salt, Acesulfame Potassium, Sucralose

    Storage Instructions: Store in a cool dry place.

    Significant product settling may occur.

    Warning: This product contains ingredients derived from milk and soy.

    Distributed by: General Nutrition Corporation, Pittsburgh, PA 15222

    Health Notes

    Pumping Up? How to Pick Your Protein Supplement

    Pumping Up? How to Pick Your Protein Supplement
    Pumping Up? How to Pick Your Protein Supplement
: Main Image
    Our protein supplement guide will help you excel on the court, in the gym, or on the road
    If you take your workouts seriously, nutrition should be top of mind too. Protein is a great place to start, and focusing on getting the right types of protein, in the right amounts, and at the right times is key. Our protein supplement guide will help you meet your wellness goals, potentially improving your performance on the court, in the gym, or on the road.

    What type?


    Whey protein is quick to digest and provides all of the protein building blocks - the amino acids. Our bodies cannot make some amino acids, and whey is ideal for meeting essential amino acid needs. Whey also supplies branched-chain amino acids (BCAA), and some research supports that they aid muscle recovery after hard workouts.


    Compared with whey, casein is slower to digest, and results in a lower, yet more prolonged rise in blood amino acid levels, which may provide a particular advantage for body builders. At least one study supports that casein outshines whey in terms of promoting strength and lean body mass gains in people following a structured weight-training plan.


    Rice protein is less likely to create allergic reactions than other proteins, and it comes from a plant, making it appropriate for vegetarians. Another potential advantage is that rice protein contains a high proportion of arginine, an amino acid that can dilate blood vessels, possibly enhancing blood flow to muscles. Rice is not a "complete" protein however; it doesn't supply all of the essential amino acids. Some products combine rice protein with proteins from sources like soy or milk to make it complete.


    Egg protein is ideal for people who are looking to build new muscle. It has a very high protein efficiency ratio (PER), which is one measure of how well our bodies can use any particular form of protein. The higher the PER, the more efficiently our bodies can use that protein when we eat it. Egg is off the charts in terms of PER. Egg protein also is a complete protein, and is a good source of essential and branched chain amino acids. Egg protein powder is made from egg whites, and comes in a convenient, pasteurized powder form.


    Soy protein is a high-quality plant protein that provides all essential amino acids, making it a good option for vegetarians. For the body to best utilize soy protein, vegetarians should also eat grain or dairy within a few days. Soy protein comes in two basic forms: soy protein isolate and soy protein concentrate. Soy protein isolate is the most highly purified form, and has a minimum protein content of 90%. Soy protein concentrate contains more carbohydrates, and has a protein content of approximately 70%. Concentrates tend to cost a little less, but if you find soy protein concentrate doesn't agree with you, try isolate, which is easier for some people to digest.

    How much?

    With protein, as with many nutrients, more is not always better. According to Dr. Doug Paddon-Jones, Associate Professor at the University of Texas Medical Branch and Director of Exercise Studies, "30 grams of protein appears to stimulate maximum muscle synthesis. For athletes, each meal and snack is a chance to hit the 30 gram mark, giving your body several opportunities each day to maximize muscle growth and repair."

    Another reason to spread protein evenly through the day is simple efficiency. "Given that your body won't use much beyond 30 grams of protein at a time, it doesn't make sense to load up with more than this," says Paddon-Jones.


    • Breakfast-To support muscle building first thing in the morning, try trading traditional carb-heavy breakfast foods for more protein-rich options, such as a powder protein supplement mixed with milk and cereal.
    • If you're heading into a long strength-training session-Sipping a casein-based protein supplement prior to and during your workout will give muscles sustained access to amino acids. If taken in the evening, casein can provide a steady supply of amino acids while you're sleeping.
    • Immediately pre- or post-workout-Especially if your workout includes aerobic or circuit training, protein manufacturers recommend a whey protein-based liquid or powder supplement.
    Suzanne Dixon, MPH, MS, RD, an author, speaker, and internationally recognized expert in chronic disease prevention, epidemiology, and nutrition, has taught medical, nursing, public health, and alternative medicine coursework. She has delivered over 150 invited lectures to health professionals and consumers and is the creator of a nutrition website acclaimed by the New York Times and Time magazine. Suzanne received her training in epidemiology and nutrition at the University of Michigan, School of Public Health at Ann Arbor.
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