Rule1 Proteins
MASS GAINER
$149.99
Unit price perWith over 1,220 calories, more than 250g carbohydrates, and 40g protein from three types of whey, Mass Gainer puts you in charge of transforming to XXL. The 6:1 carb-to-protein ratio in this calorie-packed formula can help you pack on desired pounds.
MASS GAINER
$149.99
Unit price perEstimated delivery between October 28 and October 30.
With over 1,220 calories, more than 250g carbohydrates, and 40g protein from three types of whey, Mass Gainer puts you in charge of transforming to XXL. The 6:1 carb-to-protein ratio in this calorie-packed formula can help you pack on desired pounds.
WHAT’S IN IT
Calorie-Packed Protein
In addition to a 6:1 carb-to-protein ratio, this calorie-packed formula includes creatine, MCTs, and glutamine to help you achieve your most SIZEable aspirations.^
- Over 1,220 calories!†
- 40g all-whey protein†
- 250g+ complex carb blend
- Creatine and MCT enhanced
- 9g naturally-occurring BCAAs†^^
Informed Choice® Certified.
Regularly tested for banned substances by the world class sports anti-doping lab, LGC.
†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.
SELECT FLAVOR
BUILDING LEAN MUSCLE
6:1 Carb To Protein Blend
A formula that prioritizes quality over quantity. With an emphasis on protein and the meticulous inclusion of multiple carbohydrate and fat sources.
1260 Cals in <60 Seconds
This augments your efforts in the gym or workout with quick and effective calories to keep or build your muscle mass.
Naturally Occuring Aminos
40g of protein with naturally occuring amino acids. 47% EAA's and 33% Conditionally Essential Aminos.
Informed Choice Certified
A certification showcasing that the product is true to label and free of banned substances. Amazing for those in competition who need clean products.
HOW TO USE IT
ANYTIME
Mass Gainer should be combined with a high-calorie diet and weight training or other high-intensity exercise. Use Mass Gainer in conjunction with the food you normally eat for additional daily calories. Do not use 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 Mass Gainer, 20-24 oz. of whole milk, and two (2) scoops of ice cream. Blend and enjoy a protein-fortified shake!
FAQs
Gainers are high-calorie supplements designed for people who struggle to consume enough calories through food alone. They're ideal for hard gainers, athletes in bulking phases, or anyone looking to support lean mass growth.
Mass Gainer is formulated with quality calories — a blend of protein, complex carbs, and healthy fats — to support lean muscle growth, not just weight. When paired with training, it helps build muscle, not just bulk.
Take it post-workout, between meals, or before bed — anytime you need a calorie boost. It’s flexible depending on your schedule and goals.
While Mass Gainer is calorie-dense and nutrient-rich, it’s best used in addition to whole foods, not as a sole source of nutrition. It’s ideal to supplement your meals, not replace them
Rule 1’s Mass Gainer uses quality ingredients — no cheap fillers, no added sugars, no low-grade oils. You get clean carbs, premium whey protein, and healthy fats to fuel growth, without the junk.