--- product_id: 47866853 title: "Serious Mass Protein Powder, 2.73 kg, 16 Servings" brand: "optimum nutrition" price: "B/.631" currency: PAB in_stock: true category: "Optimum Nutrition" url: https://www.desertcart.com.pa/products/47866853-serious-mass-protein-powder-2-73-kg-16-servings store_origin: PA region: Panama --- # 3g creatine monohydrate 50g protein/serving 1,255+ calories/serving Serious Mass Protein Powder, 2.73 kg, 16 Servings **Brand:** optimum nutrition **Price:** B/.631 **Availability:** ✅ In Stock ## Summary > 🚀 Elevate your bulk game with Serious Mass — because average gains are so last season! ## Quick Answers - **What is this?** Serious Mass Protein Powder, 2.73 kg, 16 Servings by optimum nutrition - **How much does it cost?** B/.631 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/47866853-serious-mass-protein-powder-2-73-kg-16-servings) ## 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 - • **Calorie Powerhouse:** Fuel your gains with over 1,250 calories per serving—perfect for serious size seekers. - • **Carb-Loaded Energy:** 250+ grams of carbs to replenish glycogen and keep you energized post-workout. - • **Versatile & Delicious:** Six crave-worthy flavors that mix effortlessly—customize with your favorite add-ins for ultimate taste. - • **Enhanced Performance Formula:** Infused with creatine, L-glutamine & glutamic acid for next-level training intensity. - • **Muscle-Building Protein Boost:** 50 grams of premium protein to amplify muscle growth and recovery. ## Overview Optimum Nutrition Serious Mass is a high-calorie mass gainer protein powder designed for athletes and fitness enthusiasts aiming to build serious muscle and size. Each serving delivers over 1,250 calories, 50 grams of protein, and 250 grams of carbohydrates, enriched with creatine and essential vitamins to support intense training and recovery. Available in six delicious flavors, it’s the go-to formula for those who struggle to gain weight or need a convenient calorie boost between meals. ## Description Product Description Optimum Nutrition has been helping performance-focused athletes for over 35 years achieve their goals. This time, we bring you the intense and dialled-up version of our muscle-building and weight gain formula. Meet the Serious Mass high-calorie protein powder, designed for true sports enthusiasts and high-performance athletes. Serious Mass is the ultimate muscle-building and mass gainer formula. This protein powder makes the ideal post-workout and between meals shake for sizing up your goals. Every serving of this mass gainer contains 25 essential vitamins and minerals (including vitamin D, B12, E, Biotin and Magnesium), over 1,250 calories to boost your calorie intake, 50 grams of protein to support muscle growth* and 250 grams of carbohydrates helping support muscle recovery**. Plus, every serving has also been enriched with 3 grams of creatine monohydrate that increases your physical performance during high-intensity exercise***. Designed for the goal-focused athlete, our ON Serious Mass High Calorie Weight Gainer protein powder comes in 6 great tasting flavours: banana, chocolate peanut butter, chocolate, cookies & cream, strawberry and vanilla. Blend this quality protein with fruit or nut butter for extra calories and discover your optimum taste combination. Serious Mass is quick, convenient, and easy to prepare: simply mix 2 heaped scoops with 710 ml of water or plant milk. Use it after intense training as a part of your recovery routine, between meals, and before bed to add calories, carbs, and protein to your healthy, balanced diet. * Source: EFSA Journal 2010;8(10):1811; 2011;9(6):2203 ** Source: EFSA Journal 2011;9(6):2211 ***Source: EFSA Journal 2011;9(7):2303 Ingredients Corn Maltodextrin Whey Protein Milk (Emulsitier: Lecithin [Soyiy e nced Cocoa Powder, Crecide, Selenum Flayuring, MILK Minerals Complex, Minerals (Magnesium, Iron, Zinc, Manganese, Chromium), Vitamins (C. E. B3, A, B5, B7. B12, B9, D, B6, B1, K, B2), Salt Stabilisers (Cellulose Gum, Guar Gum Carrageenan). Sweetenor (succalose) P.when('A').execute(function(A) { A.on('a:expander:toggle_description:toggle:collapse', function(data) { window.scroll(0, data.expander.$expander[0].offsetTop-100); }); }); Manufacturer Contact Information 4 Waterside, Dublin 24, Ireland See more ## Features - CALORIE RICH PROTEIN SOURCE – the ultimate gainer powder which can be used post-workout or between meals - SUPPORTS SERIOUS SIZE – great for those aspiring to be bigger, for those who find it hard to gain weight / muscle, or for those on the go who have high caloric needs due to intense training - 1,255-1272 CALORIES per serving – when mixed with water - 50 g – 53 g PROTEIN per serving – supports your muscle-building efforts - 250 g+ CARBOHYDRATES per serving – helps refuel the body’s glycogen stores from grueling workouts in the gym - ADDED CREATINE, L-GLUTAMINE & GLUTAMIC ACID ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0001FSWMM | | ASIN | B0001FSWMM | | Age Range Description | Adult | | Allergen Information | Contains: Cereals containing Gluten, Egg may contain, Milk, Nut, Peanuts may contain, Soy | | Benefits | Muscle Growth | | Best Sellers Rank | 1,878 in Health & Personal Care ( See Top 100 in Health & Personal Care ) 28 in Whey Nutrition Protein | | Brand Name | Optimum Nutrition | | Country Of Origin | United Kingdom | | Country of origin | United Kingdom | | Customer Reviews | 4.5 4.5 out of 5 stars (3,769) | | Customer reviews | 4.5 4.5 out of 5 stars (3,769) | | Diet Type | Vegetarian | | Flavour | Strawberry | | Global Trade Identification Number | 05060245600934 | | Guaranteed software updates until | unknown | | Is discontinued by manufacturer | No | | Item Dimensions | 29.2 x 14 x 40.6 centimetres | | Item Highlight | Strawberry, High Calorie Mass Gainer with Vitamins, Creatine and Glutamine, Supports Muscle Building | | Item Weight | 5.45 Kilograms | | Item model number | 1031917 | | Manufacturer | OPTIG | | Manufacturer | OPTIG | | Manufacturer Contact Information | 4 Waterside, Dublin 24, Ireland | | Manufacturer Part Number | 1031917 | | Material Type Free | Sugar Free | | Model Name | Serious Mass 5.45kg | | Model Number | 1031917 | | Net Content Volume | 13.88 Litres | | Number of Items | 1 | | Package Type Name | Tub | | Product Dimensions | 29.21 x 13.97 x 40.64 cm; 5.45 kg | | Protein | 15 g | | Protein Source | Whey | | Recommended Uses For Product | Post-Workout, Pre-Workout | | Total Servings Per Container | 16 | | Unit Count | 5450.0 gram | | Vitamins And Minerals | 0.56 g | ## Product Details - **Brand:** Optimum Nutrition - **Diet type:** Vegetarian - **Flavour:** Strawberry - **Item weight:** 5.45 Kilograms - **Material Type Free:** Sugar Free - **Product benefits:** Muscle Growth - **Protein source:** Whey - **Recommended uses for product:** Post-Workout, Pre-Workout - **Servings per container:** 16 - **Unit count:** 5450.0 gram ## Images ![Serious Mass Protein Powder, 2.73 kg, 16 Servings - Image 1](https://m.media-amazon.com/images/I/71smLChD41L.jpg) ## Available Options This product comes in different **Flavour Name** options. ## Questions & Answers **Q: What's new with Serious Mass?** A: Not only does Serious Mass have a fresh new look, but it also has added 3 grams of creatine to support your performance. **Q: The label looks different compared to the previous one I got, is it still the same OPTIMUM NUTRITION product?** A: As you evolve, so do we. The part of our mission is to help active individuals better understand OPTIMUM NUTRITION products. Now choosing the right product for you is easier with more visible product benefits, features and flavours on each tub. **Q: The tub is not full to the brim when opened, why is that?** A: This is completely normal and is to do with the way the powder is vacuum packed into the tub. The powder settles over time. This does not impact the weight or number of servings listed on the label. **Q: What is the best way to prepare Serious Mass drink?** A: To get the optimal consistency and prepare your drink in easy and convenient way, we recommend using a blender. For optimal use, follow serving instructions on pack. **Q: Are the ingredients tested and safe?** A: All of the ingredients in our products have been approved and considered safe for consumption by the European Food Safety Authority. ## Frequently Bought Together - Optimum Nutrition Serious Mass, Weight Gainer Protein Powder, Mass Gainer, Vitamin C and Zinc for Immune Support, Creatine, Strawberry, 12 Pound (Packaging May Vary) - Optimum Nutrition Micronized Creatine Monohydrate Powder, Unflavored, 120 Servings, 600 Grams (Packaging May Vary) - VELOMIX -2 Pack- 28 oz Protein Shaker Bottles for Protein Mixes - 2x Wire Whisk | Leak Proof Shaker Cups for Protein Shakes | Protein Shaker Bottle Pack | Shakers for Protein Shakes-Black&Transparent --- ## 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.com.pa/products/47866853-serious-mass-protein-powder-2-73-kg-16-servings](https://www.desertcart.com.pa/products/47866853-serious-mass-protein-powder-2-73-kg-16-servings) --- *Product available on Desertcart Panama* *Store origin: PA* *Last updated: 2026-10-09*