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R1 LBS by Rule 1 Proteins

R1 Mass Gainer by Rule 1 Proteins

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Rule1 Mass Gainer empowers you to take control of your growth by XXL-boosting your nutrition with more than 1,220 calories, more than 250g of carbohydrates, and 40g of protein from three different types of whey. A hard gainers stack would benefit greatly from the 6:1 carbohydrate to protein ratio of this calorie-dense dish. R1 Mass Gainer is a conventional weight-growth supplement that helps you gain weight by providing lots of high-quality proteins, complex carbs, and calories. This calorie-dense formula also has creatine, MCTs, and glutamine to help you reach your most SIZEable goals, in addition to a 6:1 carbohydrate to protein ratio.

  • Over 1,220 calories!
  • 40g all-whey protein
  • 250g+ complex carb blend
  • Creatine and MCT enhanced
  • 9g naturally-occurring BCAAs^^ 

Our transparent formula's negatives are real positives:

  • ZERO Creamers
  • ZERO Spiking
  • ZERO Soy Protein
  • ZERO Banned Substances

Per serving

^ 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.

^^ Amino acids are naturally occurring and approximated.



R1 Mass Gainer should be combined with a high-calorie diet and weight training or other high-intensity exercise. Use R1 Mass Gainer in conjunction with the food you normally eat for additional daily calories. Do not use R1 Mass Gainer in place of meals. 

Mixing Directions 

Add two (2) heaping scoops of Mass Gainer with 20-24 oz. of water, or milk, in a shaker cup or blender and mix it up! 

Alternate Suggested

Mix in a blender, add your favorite fruit, a tablespoon of peanut or tree nut butter, and ice to the above, mix, and enjoy a protein-fortified smoothie! Calorie-Dense Suggested Mix In a blender, add one (1) serving of R1 Mass Gainer, 20-24 oz. of whole milk, and two (2) scoops of ice cream. Blend and enjoy a protein-fortified shake!

Rule 1 Mass Gainer Facts

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