Price: $53.99 - $49.99
(as of Sep 27, 2025 05:55:34 UTC – Details)
More calories. More protein. More carbs. SERIOUS MASS by Optimum Nutrition serves over 1,200 calories, 50g of blended protein, and over 249g of carbohydrates per 2-scoop serving to help you maximize your daily caloric intake – the ideal post-workout and between meals shake for sizing up your goals. SERIOUS MASS provides you with more tools to help you pack on pounds, when taken in addition to normal calorie intake and over time with regular resistance training.
Is Discontinued By Manufacturer : Yes
Product Dimensions : 8.06 x 8.06 x 10.39 inches; 6 Pounds
Item model number : 1098370
Department : unisex-adult
Date First Available : September 21, 2004
Manufacturer : Glanbia Performance Nutrition
ASIN : B0015R6ZPQ
Best Sellers Rank: #2,412 in Health & Household (See Top 100 in Health & Household) #2 in Sports Nutrition Weight Gainers #351 in Sales & Deals
Customer Reviews: 4.5 4.5 out of 5 stars 39,351 ratings 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); } }); });
HIGH CALORIE WEIGHT GAINER: More than 1,200 calories per 2-scoop serving
50 grams of blended protein per 2-scoop serving
Over 250 grams of carbohydrates per 2-scoop serving
22 vitamins and minerals including Vitamin C, Vitamin D, and Zinc to provide immune support
With over 20 vitamins and minerals including Vitamin C and Zinc to provide immune support
MORE VERSATILITY: Using an electric blender, add fresh or frozen fruits, peanut butter, nuts, and other calorie dense foods to boost your weight gain potential
Customers say
Customers find this protein powder effective for muscle growth and recovery, helping them gain up to 15 pounds of solid muscle. The product receives positive feedback for its taste, quality, and value for money, with customers noting it works well as a meal replacement. The mixability receives mixed reviews – while some say it blends well without clumps, others find it very hard to mix properly. The serving size is also mixed, with customers appreciating the 16 servings per container but finding the 12-pound bag size too large.