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Mass Gainers

(45 Results)

Mass gainers are designed to fuel your muscle gains and goals with high calorie, carbohydrate and protein dense formulas. Mass gainers often include popular ingredients like creatine and vitamins and minerals to help support gains in your bulking phase. Browse drinkable high calorie, protein dense supplements that make it easy to get your nutrition and fuel, and also hit your macros. Check out GNC's best mass gainer supplement buying guide here.

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  • Bulk 1340 - Double Chocolate (15 Servings) Double Chocolate | GNC
    4 Flavors Available
    4 Flavors Available
    15 servings
    767
    BOGO 50% Off Mix-and-Match
    $79.99
    Make It a Routine & Save 10%
  • Bulk 1340 - Vanilla Ice Cream (15 Servings) Vanilla Ice Cream | GNC
    4 Flavors Available
    4 Flavors Available
    15 servings
    767
    BOGO 50% Off Mix-and-Match
    $79.99
    Make It a Routine & Save 10%
  • Bulk 1340 - Strawberries and Cream (9 Servings) Strawberries and Cream | GNC
    4 Flavors Available
    4 Flavors Available
    9 servings
    767
    BOGO 50% Off Mix-and-Match
    $49.99
    Make It a Routine & Save 10%
  • Bulk 1340 - Cookies and Cream (9 Servings) Cookies and Cream | GNC
    4 Flavors Available
    4 Flavors Available
    9 servings
    767
    BOGO 50% Off Mix-and-Match
    $49.99
    Make It a Routine & Save 10%
  • Bulk 1340 - Vanilla Ice Cream (9 Servings) Vanilla Ice Cream | GNC
    4 Flavors Available
    4 Flavors Available
    9 servings
    767
    BOGO 50% Off Mix-and-Match
    $49.99
    Make It a Routine & Save 10%
  • Bulk 1340 - Double Chocolate (9 Servings) Double Chocolate | GNC
    4 Flavors Available
    4 Flavors Available
    9 servings
    767
    BOGO 50% Off Mix-and-Match
    $49.99
    Make It a Routine & Save 10%
  • Serious Mass - Chocolate (16 Servings) Chocolate | GNC
    5 Flavors + More Sizes Available
    5 Flavors + More Sizes Available
    16 servings
    413
    $79.99
    Make It a Routine & Save 10%
  • Serious Mass - Vanilla (16 Servings) Vanilla | GNC
    5 Flavors + More Sizes Available
    5 Flavors + More Sizes Available
    16 servings
    413
    $79.99
    Make It a Routine & Save 10%
  • GNC AMP Mass XXX Chocolate with MyoTor Front Tub
    4 Flavors Available
    4 Flavors Available
    13 servings
    153
    BOGO 50% Off Mix-and-Match
    $79.99
    Make It a Routine & Save 10%
  • Weight Gainer - Vanilla Ice Cream (6 Servings) Vanilla Ice Cream | GNC
    3 Flavors Available
    3 Flavors Available
    6 servings
    245
    BOGO 50% Off Mix-and-Match
    $29.99
    Make It a Routine & Save 10%
  • GNC AMP Mass XXX with MyoTor Cookies and Cream
    4 Flavors Available
    4 Flavors Available
    13 servings
    153
    BOGO 50% Off Mix-and-Match
    $79.99
    Make It a Routine & Save 10%
  • Weight Gainer - Double Chocolate (6 Servings) Double Chocolate | GNC
    3 Flavors Available
    3 Flavors Available
    6 servings
    245
    BOGO 50% Off Mix-and-Match
    $29.99
    Make It a Routine & Save 10%

  • Best Mass Gainers of 2024: Top 5 For Bulking Up
    Trying to put on muscle? Here's our picks for the best mass gainer supplements of 2024, according to a Registered Dietitian.
  • GNC AMP Mass XXX Strawberry with MyoTor Front Tub
    4 Flavors Available
    4 Flavors Available
    13 servings
    153
    BOGO 50% Off Mix-and-Match
    $79.99
    Make It a Routine & Save 10%
  • GNC AMP Mass Gainer XXX with MyoTor Vanilla Front Tub
    4 Flavors Available
    4 Flavors Available
    13 servings
    153
    BOGO 50% Off Mix-and-Match
    $79.99
    Make It a Routine & Save 10%
  • 15 servings
    25
    BOGO 50% Off Mix-and-Match
    $69.99
    Make It a Routine & Save 10%
  • 15 servings
    25
    BOGO 50% Off Mix-and-Match
    $69.99
    Make It a Routine & Save 10%
  • Weight Gainer - Strawberries and Cream (6 Servings) Strawberries and Cream | GNC
    3 Flavors Available
    3 Flavors Available
    6 servings
    245
    BOGO 50% Off Mix-and-Match
    $29.99
    Make It a Routine & Save 10%
  • Super Mass Gainer™ - Gourmet Vanilla (8 Servings) Gourmet Vanilla | GNC
    2 Flavors Available
    2 Flavors Available
    8 servings
    44
    $54.99
    Make It a Routine & Save 10%
  • Serious Mass™ - Chocolate Peanut Butter (8 Servings) Chocolate Peanut Butter | GNC
    5 Flavors + More Sizes Available
    5 Flavors + More Sizes Available
    8 servings
    413
    $54.99
    Make It a Routine & Save 10%
  • 15 servings
    25
    BOGO 50% Off Mix-and-Match
    $69.99
    Make It a Routine & Save 10%
  • 14 servings
    41
    $84.99
    Make It a Routine & Save 10%
  • Amplify XL® - Vanilla Flex (48 Servings) Vanilla Flex | GNC
    7 Flavors + More Sizes Available
    7 Flavors + More Sizes Available
    48 servings
    46
    $109.99
    Make It a Routine & Save 10%
  • Mass Pro High Protein Mass Gainer- Vanilla (14 Servings) Vanilla | GNC
    3 Flavors Available
    3 Flavors Available
    14 servings
    23
    $79.99
    Make It a Routine & Save 10%
  • Amplify XL® - Double Chocolate Explosion (24 Servings) Double Chocolate Explosion | GNC
    7 Flavors + More Sizes Available
    7 Flavors + More Sizes Available
    24 servings
    46
    $67.99
    Make It a Routine & Save 10%
  • Super Mass Gainer - Rich Chocolate (8 Servings) Rich Chocolate | GNC
    2 Flavors Available
    2 Flavors Available
    8 servings
    44
    $54.99
    Make It a Routine & Save 10%
  • Serious Mass™ - Chocolate (8 Servings) Chocolate | GNC
    5 Flavors + More Sizes Available
    5 Flavors + More Sizes Available
    8 servings
    413
    $54.99
    Make It a Routine & Save 10%
  • Serious Mass™ - Vanilla (8 Servings) Vanilla | GNC
    5 Flavors + More Sizes Available
    5 Flavors + More Sizes Available
    8 servings
    413
    $54.99
    Make It a Routine & Save 10%
  • True-Mass® - Chocolate Milkshake (16 Servings) Chocolate Milk Shake | GNC
    3 Flavors Available
    3 Flavors Available
    18 servings
    49
    $89.99
    Make It a Routine & Save 10%
  • Mass Pro High Protein Mass Gainer - Cookie Butter (14 Servings) Cookie Butter | GNC
    3 Flavors Available
    3 Flavors Available
    14 servings
    23
    $79.99
  • Mass Pro High Protein Mass Gainer- Chocolate (14 Servings) Chocolate | GNC
    3 Flavors Available
    3 Flavors Available
    14 servings
    23
    $79.99
    Make It a Routine & Save 10%
  • Serious Mass™ - Strawberry (8 Servings) Strawberry | GNC
    5 Flavors
    8 servings
    413
    $54.99
  • PMD Amplify XL Premium Protein Toffee Macchiato
    7 Flavors
    24 servings
    46
    $67.99
    Make It a Routine & Save 10%
  • Amplify XL® - Double Chocolate Explosion (48 Servings) Double Chocolate Explosion | GNC
    7 Flavors + More Sizes Available
    7 Flavors + More Sizes Available
    48 servings
    46
    $109.99
    Make It a Routine & Save 10%
  • Amplify XL® - Strawberry Slam (24 Servings) Strawberry Slam | GNC
    7 Flavors
    38 servings
    46
    $67.99
    Make It a Routine & Save 10%
  • Amplify XL® - Vanilla Flex (24 Servings) Vanilla Flex | GNC
    7 Flavors + More Sizes Available
    7 Flavors + More Sizes Available
    24 servings
    46
    $67.99
    Make It a Routine & Save 10%
  • True-Mass® - Vanilla Ice Cream (16 Servings) Vanilla Ice Cream | GNC
    3 Flavors Available
    3 Flavors Available
    16 servings
    49
    $89.99
  • Amplify® XL - Cinnamon Toast (24 Servings) Cinnamon Toast | GNC
    7 Flavors
    24 servings
    46
    $67.99
    Make It a Routine & Save 10%
  • Amplify® XL - Peanut Butter Cup (24 Servings) Peanut Butter Cup | GNC
    7 Flavors
    24 servings
    46
    $67.99
    Make It a Routine & Save 10%
  • 8 servings
    5
    $54.99
  • 40 servings
    6
    $49.99
    Make It a Routine & Save 10%
  • Amplify XL® - Mango Mania (24 Servings) Mango Mania | GNC
    7 Flavors
    24 servings
    46
    $67.99
    Make It a Routine & Save 10%
  • Serious Mass - Chocolate Peanut Butter (16 Servings) Chocolate Peanut Butter | GNC
    5 Flavors + More Sizes Available
    5 Flavors + More Sizes Available
    16 servings
    413
    $79.99
    View Options
    View Options
  • True-Mass®  - Cookies and Cream (16 Servings) Cookies and Cream | GNC
    3 Flavors Available
    3 Flavors Available
    16 servings
    49
    $89.99
    View Options
    View Options

Protein is a key player when it comes to supporting your efforts in the gym by fueling muscle strength and gains. If you’re wondering how to gain mass or how to gain muscle mass fast – a mass gainer may be right for you.

How do I gain muscle mass?

More calories, protein and a strength training program is the recipe required to build muscle mass. Demanding training sessions require proper recovery to heal, grow and repeat. Mass gaining goals require calories and nutrition above and beyond what one might consume in a typical day. Excess calories from nutrient dense sources are in fact, dense. Volume wise, these high nutrient foods may be tough to swallow, leaving lots of room for error in meeting your macro goals. Especially if you’re aiming to consume the recommended 500+ ADDITIONAL calories needed each day for weight gain.

What is a mass gainer?

Mass gainers are powders with more calories, protein, carbohydrates and (occasionally) fats you’re your traditional protein powder. They may also contain other ingredients like vitamins, minerals, and creatine – an all-around shake for convenience.

What does a mass gainer do?

Mass gainers provide the additional nutrients you need like amino acids, creatine and carbohydrates to support proper recovery from intense training, while also putting the building blocks in place for muscle growth.

Why should I use a mass gainer?

With the strenuous demands on your body during heavy training, having the right blend of amino acids for proper recovery and muscle building gives you the advantage you need to grow. Gainers may be the perfect supplement to add to your routine if you’re having trouble figuring out what to eat to gain muscle mass, not meeting your nutritional needs from food alone, or looking to dial in your macros.

Wondering when to take mass gainer? Perfect for post-workout recovery or anytime during the day when you need a bit extra.

Do mass gainers work?

For a quick fix of extra nutrition for your weight gaining goals, mass gainers can help to fuel results. With so many great tasting options to choose from, you can trust GNC has your back in supporting that extra lift you need to reach those massive goals.

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