--- product_id: 18548319 title: "Serious Mass Protein Powder, Chocolate Peanut Butter 12LB" brand: "optimum nutrition" price: "S$299" currency: SGD in_stock: true category: "Optimum Nutrition" url: https://www.desertcart.sg/products/18548319-serious-mass-protein-powder-chocolate-peanut-butter-12lb store_origin: SG region: Singapore --- # 250g carbs per serving 50g blended protein 1200+ calories/serving Serious Mass Protein Powder, Chocolate Peanut Butter 12LB **Brand:** optimum nutrition **Price:** S$299 **Availability:** ✅ In Stock ## Summary > 💥 Bulk smarter, not harder with Serious Mass! ## Quick Answers - **What is this?** Serious Mass Protein Powder, Chocolate Peanut Butter 12LB by optimum nutrition - **How much does it cost?** S$299 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/18548319-serious-mass-protein-powder-chocolate-peanut-butter-12lb) ## Best For - optimum nutrition enthusiasts ## Why This Product - Trusted optimum nutrition brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Carb Overload:** 250 grams of complex carbs to keep your energy and bulk on point all day long. - • **Protein Packed:** 50 grams of premium whey blend to amplify muscle growth and recovery. - • **Customizable Fuel:** Blend with fruits, nuts, or peanut butter for a personalized, calorie-dense shake that fits your lifestyle. - • **Calorie Powerhouse:** Fuel your gains with 1,200+ calories per 2-scoop serving—because size matters. - • **Immune Boost Formula:** 20+ vitamins & minerals including Vitamin C & Zinc to keep you strong inside and out. ## Overview Optimum Nutrition Serious Mass Chocolate Peanut Butter is a high-calorie weight gainer delivering over 1,200 calories, 50g of blended whey protein, and 250g of carbohydrates per 2-scoop serving. Enhanced with 20+ vitamins and minerals for immune support, it’s designed for adults aiming to maximize muscle growth and weight gain through convenient, versatile shakes. ## Description 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. ## Features - HIGH-CALORIE MASS GAINER FOR SIZE & STRENGTH:Delivers over 1,200 calories per 2-scoop serving to support weight gain, bulking phases, and increased daily energy intake when diet alone isn’t enough - 50G PREMIUM PROTEIN BLEND: Provides 50 grams of blended protein per serving to help support muscle repair, recovery, and lean mass development after intense training - HIGH-CARB ENERGY SUPPORT: Packed with over 250 grams of carbohydrates per serving to replenish glycogen stores, fuel workouts, and support sustained energy throughout the day - ADDED VITAMINS & MINERALS FOR DAILY NUTRITION: Includes 20+ essential vitamins and minerals, including Vitamin C and Zinc, to help support overall nutritional balance and immune system function - CUSTOMIZABLE, HIGH-CALORIE SHAKE BUILDER: Easily blend with milk, fruits, peanut butter, nuts, or other calorie-dense ingredients to further increase calories, improve taste, and tailor your weight-gain goals - Optimum Nutrition is the World's #1 Sports Nutrition Brand- Highest quality control measures so you feel comfortable and safe consuming the product ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00OV0VYHI | | ASIN | B00OV0VYHI | | Age Range Description | Adult | | Allergen Information | Milk, Soy | | Best Sellers Rank | #1,690 in Health & Household ( See Top 100 in Health & Household ) #2 in Sports Nutrition Weight Gainers #263 in Sales & Deals | | Brand Name | Optimum Nutrition | | Customer Reviews | 4.5 4.5 out of 5 stars (4,974) | | Date First Available | December 18, 2013 | | Diet Type | Vegetarian | | Flavor | Chocolate Peanut Butter | | Global Trade Identification Number | 00748927052572 | | Item Dimensions | 11.5 x 5.5 x 16 inches | | Item Highlight | Weight Gainer Protein Powder, Mass Gainer with Whey Protein, Creatine, Glutamine, BCAAs, Vitamins & Minerals, Easy Mixing | | Item Weight | 12 pounds | | Item model number | 1056371 | | Manufacturer | Glanbia Performance Nutrition | | Manufacturer | Glanbia Performance Nutrition | | Manufacturer Part Number | 1056371 | | Material Type Free | Caffeine Free | | Model Name | ON SERIOUS MASS CHOC PB 12LB | | Model Number | 1056371 | | Number of Items | 1 | | Package Type Name | Tub | | Product Benefits | Immune Support, Muscle Growth, Weight Gain | | Product Dimensions | 11.5 x 5.5 x 16 inches; 12 pounds | | Protein | 50 g | | Protein Source | Whey | | Recommended Uses For Product | Calorie Increase, Muscle Growth, Post-Workout, Weight Gain | | Supplement Formulation | Multi-Supplement | | Total Servings Per Container | 16 | | UPC | 748927052572 | | Unit Count | 192 Ounce | | Vitamins And Minerals | 0.9, 3.7, 30, 5, 700 milligrams | ## Product Details - **Brand:** Optimum Nutrition - **Flavor:** Chocolate Peanut Butter - **Item Weight:** 12 pounds - **Material Type Free:** Caffeine Free - **Servings per Container:** 16 ## Images ![Serious Mass Protein Powder, Chocolate Peanut Butter 12LB - Image 1](https://m.media-amazon.com/images/I/511yjH27xML.jpg) ## Available Options This product comes in different **Size, Flavor** options. ## Frequently Bought Together - Optimum Nutrition Serious Mass, Weight Gainer Protein Powder, Mass Gainer, Vitamin C and Zinc for Immune Support, Creatine, Chocolate Peanut Butter, 12 Pound (Packaging May Vary) - Optimum Nutrition Micronized Creatine Monohydrate Powder, Unflavored, 120 Servings, 600 Grams (Packaging May Vary) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sg/products/18548319-serious-mass-protein-powder-chocolate-peanut-butter-12lb](https://www.desertcart.sg/products/18548319-serious-mass-protein-powder-chocolate-peanut-butter-12lb) --- *Product available on Desertcart Singapore* *Store origin: SG* *Last updated: 2026-10-19*