Rule1 Mass Gainer – High-Calorie Weight Gain Formula with 1,220+ Calories, 250g+ Complex Carb Blend, 40g All-Whey Protein Per Serving (8 Servings, Strawberries & Crème)

Price: $34.99 - $29.99
(as of Feb 09, 2026 11:37:13 UTC – Details)

From the brand

Premium Proteins

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During & After Workouts

For All Active Lifestyles

Is Discontinued By Manufacturer ‏ : ‎ No
Product Dimensions ‏ : ‎ 8 x 8 x 11 inches; 6 Pounds
Item model number ‏ : ‎ RZ0437
Date First Available ‏ : ‎ October 18, 2022
Manufacturer ‏ : ‎ Rule One Proteins, LLC
ASIN ‏ : ‎ B0BJMNP8MT
Best Sellers Rank: #23,143 in Health & Household (See Top 100 in Health & Household) #19 in Sports Nutrition Weight Gainers
Customer Reviews: 4.3 4.3 out of 5 stars (203) var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
Serious Weight Gainer: 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
6:1 CARB-TO-PROTEIN RATIO – The 6:1 carb-to-protein ratio in this calorie-packed formula can help you pack on desired pounds.
QUALITY CALORIES – Our formula also includes 9g naturally-occurring BCAAs, creatine, MCTs, and glutamine. We intentionally left out: creamers, soy protein, and banned substances.
HOW TO USE IT – R1 Mass Gainer should be combined with a high-calorie diet and weight training or other high-intensity exercise. Use it in conjunction with the food you normally eat for additional daily calories. Do not use in place of meals.
BETTER INPUT, BETTER OUTPUT – You’ll see these words all over our products. It means we’re relentlessly pursuing better input to ensure we never put a product on our site—or on a shelf—that we wouldn’t put in our own gym bag.