Weight Gainers

It's common to turn to weight gain protein when your fast-burning metabolism won't let you pack on quality pounds through diet alone. Weight gain protein powders don't just fill you up with empty calories, such as low-quality ingredients or sugars either, they contain formulations of high-quality protein blends, complex carbohydrates and healthy fats that make it easy to ingest an extra few thousand calories each day. To further increase muscle mass while minimizing fat gain, some products also include creatine, amino acids and fiber. Save on mass gain protein powder with ProSource today! <<

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  1. CytoGainer


    Item CMX008
    Save 60%

    Your Price $37.20

    Retail $91.99

    Select flavor

    A longtime quality supplement in the hard gainer category, CytoGainer provides a balance of complex carbs (38 grams) to proteins (27 grams) per each 2 scoop serving. Many athletes double that up to 4 scoops per dose for even greater mass gain power. It also contains a wide array of vitamins and minerals and other growth factors. Available in three delicious flavors.
  2. Super Mass Gainer

    Super Mass Gainer

    Item DTZ057
    Save 44%

    Your Price $22.39

    Retail $39.98

    Add to Cart

  3. Real Gains
    Save 64%

    Your Price $17.40

    Retail $48.95

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  4. Muscle-Peak


    Item INA012
    Save 54%

    Your Price $31.99

    Retail $69.99

    Out of stock

  5. N-Large3


    By Prolab
    Item PRO066
    Save 53%

    Your Price $44.76

    Retail $94.99

    Out of stock

  6. Arnold Iron Mass
    Save 51%

    Your Price $39.18

    Retail $79.99

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  7. True-Mass


    By BSN
    Item BSN011
    Save 59%

    Your Price $34.60

    Retail $84.49

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    At 700 calories per serving, True-Mass lives up to its name by offering within that count an extensive blend of six different proteins, a big-time dose of carbs (90 g), healthy fats, BCAA’s and valuable enzymes. This is a serious mass builder formulated specifically for the hard gaining athlete.
  8. Elite Mass Gainer

    Elite Mass Gainer

    Item DTZ042
    Save 59%

    Your Price $33.56

    Retail $80.99

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  9. Monster Massive

    Monster Massive

    Item CMX035
    Save 56%

    Your Price $39.16

    Retail $88.95

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    As the name implies, Monster Massive is formulated to render substantial mass gain power via 600 calories per serving, consisting of a wide range of valued ingredients including a big 50 gram dose of protein, with glutamine, BCAA’s, healthy fats, enzymes, vitamins, minerals and a “monster” serving of carbs (125 grams). This 5.95 pound tub is available in five delicious flavors.
  10. Monster Milk

    Monster Milk

    Item CMX032
    Save 58%

    Your Price $27.16

    Retail $64.99

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    Although Monster Milk might seem to be an offshoot of CytoSport’s original Muscle Milk, the differences are enough for this newer entry to certainly stand alone. It can serve has a solid weight gainer, minus the heavier carb count usually associated with that category, or a slower release nighttime protein. Creatine, glutamine, beta alanine and enzymes are just a few of its other key elements.

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