Mass Gainer Optimum Nutrition Serious Mass [5.4kg] - Chrome Supplements and Accessories

Optimum Nutrition Serious Mass [5.4kg]

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For Those Who Demand More!


The Branched Chain Amino Acids Leucine, Isoleucine and Valine are valued for their anabolic and anti-catabolic properties. Used in the 2:1:1 ratio before and/or after endurance exercise they may help spare muscle tissue. Used after strength training, BCAAs help kick-start protein synthesis which plays an important role in muscle growth. We also included 5 grams of L-Glutamine because this conditionally essential amino acid may help support recovery after intense exercise.

Beyond The Basics:

  • 8 Grams of BCAAs per Serving
  • 5 Grams of L-Glutamine per Serving
  • Superior taste and Mixability
  • Electrolytes for Muscle Function Support


  • Add two heaping scoops of SERIOUS MASS to a blender filled with 720ml of water. Blend for 45-60 seconds. Then add a few ice cubes and, if desired, other calorie-contributing ingredients and blend for an additional 30-45 seconds.
  • TIPS: Mixing two scoops of SERIOUS MASS with nonfat or low fat milk instead of water will give you a thicker, creamier, higher-calorie shake. New users may find if beneficial to begin with 1/2 of a serving daily for the first week and then gradually increase to 1 or more full servings several times a day. SERIOUS MASS is a substantial weight-gain supplement that can be used to feed serious calorie needs in a variety of different ways.
  • BETWEEN MEALS: Drink 1/2-1 serving of SERIOUS MASS between meals to maintain positive nitrogen balance and support a high-calorie diet.
  • POST-WORKOUT: Begin drinking 1/2-1 serving of SERIOUS MASS 30-45 minutes following exercise to support maximum recovery.
  • BEFORE BED: Drink 1/2-1 serving of SERIOUS MASS about 45-60 minutes before bed to provide nutrients to recovering muscle throughout the night.
  • NOTE: For best results use SERIOUS MASS combined with intense weight training (3-5 times per week) and a sensible whole foods diet. Also, keep in mind that sufficient recovery between workouts impacts your ability to gain lean mass. Allowing at least 48 hours between workouts involving the same body parts is recommended.


Consult your health care professional prior to use. Use this product as a food supplement only. Keep out of reach of children, not intended for individuals under the age of 18.

Nutritional Facts