--- product_id: 3624967 title: "Optimum Nutrition Serious Mass Weight Gainer Protein Powder, Vanilla, 12LB" brand: "optimum nutrition" price: "R7304" currency: ZAR in_stock: true reviews_count: 13 category: "Optimum Nutrition" url: https://www.desertcart.co.za/products/3624967-optimum-nutrition-serious-mass-weight-gainer-protein-powder-vanilla-12lb store_origin: ZA region: South Africa --- # 250g+ Carbs/serving 50g Protein blend 1,260 Calories/serving Optimum Nutrition Serious Mass Weight Gainer Protein Powder, Vanilla, 12LB **Brand:** optimum nutrition **Price:** R7304 **Availability:** ✅ In Stock ## Summary > 🚀 Bulk up smarter, not harder with Serious Mass! ## Quick Answers - **What is this?** Optimum Nutrition Serious Mass Weight Gainer Protein Powder, Vanilla, 12LB by optimum nutrition - **How much does it cost?** R7304 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/3624967-optimum-nutrition-serious-mass-weight-gainer-protein-powder-vanilla-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 - • **Calorie Powerhouse:** Fuel your gains with a massive 1,260 calories per 2-scoop serving—perfect for serious mass builders. - • **Protein Blend Mastery:** 50 grams of premium whey, casein, and egg protein to support muscle recovery and growth. - • **Carb Overload for Energy:** Over 250 grams of carbohydrates to replenish glycogen and keep you energized all day. - • **Vitamin & Mineral Fortified:** 25 essential vitamins and minerals including Vitamin C, D, and Zinc to support immunity and overall health. - • **Enhanced with Creatine & Glutamine:** Boost muscle strength and recovery with added creatine and glutamine for next-level performance. ## Overview Optimum Nutrition Serious Mass is a high-calorie weight gainer delivering 1,260 calories, 50g of blended protein, and over 250g of carbs per serving. Enhanced with creatine, glutamine, and 25 vitamins and minerals, it’s designed to maximize muscle growth and recovery for adults committed to serious weight gain and fitness goals. ## Description More calories. More protein. More carbs. SERIOUS MASS by Optimum Nutrition serves up 1,260 calories, 50g of blended protein, and over 250g of carbohydrates per 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. Calories per gram: Fat 9, Carbohydrate 4, Protein 4. Review: Excellent - I’ve been using this mass gainer for a while, and I’m really happy with the results. The vanilla flavor tastes great, it mixes well with milk, and it’s easy to drink. It helps me reach my daily calorie and protein goals, especially since I’m trying to gain weight. It keeps me feeling full for a long time, and the quality is excellent. I would definitely buy it again and recommend it to anyone looking for a reliable mass gainer.” Review: It works, wish it was cheaper - It really works if you're consistent at the gym and keep your regular diet up. I use it with milk instead of water so the taste is great. I actually prefer the chocolate over the vanilla because the vanilla is quite sweet. You do have to blend it for a while; otherwise, it can be very clumpy. Note that it also has CREATINE, so take that into account if you're also taking it separately. I hope they can reduce the price because it's a great product but can take a toll on your wallet. ## Features - Packaging may vary - New look, with the same trusted Quality! - Product Note: Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product delivery - High Calorie Weight Gainer: 1,250 Calories per 2-Scoop Serving - 50 Grams of Protein per Serving - Over 250 Grams of Carbohydrates per Serving - 25 Vitamins & Minerals Plus Creatine & Glutamine - Using an Electric Blender to Add Fresh or Frozen Fruits, Peanut Butter, Nuts & Other Calorie Dense Foods to Boost Your Weight Gain Potential ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000GIPJ02 | | Age Range Description | Adult | | Allergen Information | Milk, Soy | | Best Sellers Rank | #1,785 in Health & Household ( See Top 100 in Health & Household ) #2 in Sports Nutrition Weight Gainers #283 in Sales & Deals | | Brand | Optimum Nutrition | | Brand Name | Optimum Nutrition | | Customer Reviews | 4.5 out of 5 stars 20,053 Reviews | | Diet Type | Vegetarian | | Flavor | Vanilla | | Item Dimensions | 15.35 x 11.42 x 5.51 inches | | Item Highlight | Weight Gainer Protein Powder, Mass Gainer with Whey Protein, Creatine, Glutamine, BCAAs, Vitamins & Minerals, Easy Mixing | | Item Weight | 12 pounds | | Manufacturer | Glanbia Performance Nutrition | | Manufacturer Part Number | 1031920 | | Material Type Free | Caffeine Free | | Model Name | Optimum Nutrition Serious Mass Weight Gainer Protein Powder Vitamin C Zinc and Vitamin D for Immune Support | | Model Number | 1031920 | | Net Content Volume | 13.88 liters | | Number of Items | 1 | | Package Type Name | Canister | | Product Benefits | Muscle Growth, Weight Gain | | Protein | 50 g | | Protein Source | Casein, Egg, Whey | | Recommended Uses For Product | Post-Workout | | Servings per Container | 16 | | Supplement Formulation | Multi-Supplement | | Total Servings Per Container | 16 | | UPC | 748927023824 | | Unit Count | 192 Ounce | | Vitamins And Minerals | 0.9, 3.0, 30.0, 5.0, 700.0 milligrams | ## Product Details - **Brand:** Optimum Nutrition - **Flavor:** Vanilla - **Item Weight:** 12 pounds - **Material Type Free:** Caffeine Free - **Servings per Container:** 16 ## Images ![Optimum Nutrition Serious Mass Weight Gainer Protein Powder, Vanilla, 12LB - Image 1](https://m.media-amazon.com/images/I/81SwKoP5KbL.jpg) ## Available Options This product comes in different **Size, Flavor** options. ## Questions & Answers **Q: How well does this work? I'm a teen with a high matabalizum and I'm looking to build mass and bulk up** A: I’m nearly 50 years old, but seeing this question I had to comment. Until I was around 32 or so, I couldn’t gain weight no matter how much I had to eat; or so it seemed. I remember not caring whether it was fat or ideally muscle, I just didn’t want to be skinny anymore. Then I hit a point in my life where the metabolism slowed and I couldn’t keep the weight off. That lasted for nearly 15 years and for some reason my appetite suddenly plummeted and now I’m back looking at weight gainers simply to do nothing more than maintain a healthy weight. Just try to keep in mind that human physiology typically prohibits putting on large amounts of muscle in a short period of time naturally. That means that a large portion of quick gains will be fat. Embrace your high metabolism and shoot for a reasonable goal. That said, the more calories you intake in a day that exceeds what your body can burn, the quicker you will gain weight. For the most part, it’s simple math. Total Intake - Total Burned = Energy Stored Primarily as Fat. There are about 3500 calories in one pound. If you were to forge an extra 3500 calories a day, you could theoretically gain 7 pounds a week. For someone like you, that probably means eating 8,000 calories a day. Now as far as this product goes, it’s one of the highest calorie per serving gainers I have seen and it’s much quicker to pound a shake than to eat a steak! Another thing to keep in mind is that supplements that are fortified with vitamins and minerals, have the potential to far exceed recommended safe values for human consumption. I ran into this when I was your age. I was drinking over a gallon of milk a day, milk is fortified with vitamin D and that build up led to some freaky painful headaches in me personally. Too much calcium can also upset your bodies homeostasis and lead to surprising problems. Being young, your body can handle a lot! Just wanted you to be aware of the things I wish I knew when I was your age. If I were young again I would focus on speed, agility and good clean ripped muscle! Shredded muscle always looks bigger than fat muscle. Cheers! **Q: banana** A: I’m adding my two cents. Chocolate peanut butter is the truth. Banana was good at first, and then it wasn’t. **Q: Does it work without work out ?because im so busy all day** A: First off, I am so sorry that everyone that responded to this question this far hasn't answered your question. I'm seeing you ask if this helps you put on weight without working out. I've seen 3 or 4 people put "no excuses, no short cuts," "no motivation, no nothing" and other meat head answers. I apologize about them =) Getting to your question. Yes, it does help you gain weight even if you're not working out. I understand you're busy...who's not? Working out and drinking this is without question the best way to gain weight. But, for the last 2 weeks I've been drinking a scoop in the morning, and a scoop at night before bed. And I've gained 3 pounds! Doesn't sound like a lot, but if I don't get 6 eggs every morning, I'll loose 2 pounds. If I don't eat 400 calories everyday, I'll loose 2 pounds. I have such a low fat to muscle ratio that if I type it in, people won't believe me, so ill save it for the haters on YouTube (jk) 😅 But yeah, this stuff works. Might jist be a pounds a week, but if you're like me, that's great success. This does work without working out as long as you drink it consistently. Best of luck to you my friend. **Q: will a high intensity sport like basketball plus weight training, 5 days a week lessen the effectiveness of this product??** A: The guy who says this causes cancer is lying or is just ignirant. Some other supplements may but even at that mant studies don't say which ones. Powder prorein supplements do not. As do many men, i don't use this product for muscle gain. I use max muscle for that. I use this for belly fat gaining. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Excellent *by R***O on July 23, 2026* I’ve been using this mass gainer for a while, and I’m really happy with the results. The vanilla flavor tastes great, it mixes well with milk, and it’s easy to drink. It helps me reach my daily calorie and protein goals, especially since I’m trying to gain weight. It keeps me feeling full for a long time, and the quality is excellent. I would definitely buy it again and recommend it to anyone looking for a reliable mass gainer.” ### ⭐⭐⭐⭐⭐ It works, wish it was cheaper *by R***. on August 10, 2026* It really works if you're consistent at the gym and keep your regular diet up. I use it with milk instead of water so the taste is great. I actually prefer the chocolate over the vanilla because the vanilla is quite sweet. You do have to blend it for a while; otherwise, it can be very clumpy. Note that it also has CREATINE, so take that into account if you're also taking it separately. I hope they can reduce the price because it's a great product but can take a toll on your wallet. ### ⭐⭐⭐⭐⭐ Great mass gainer *by T***N on August 29, 2026* really like this mass gainer. It mixes well, tastes good, and is easy to add to my daily routine. I’ve been enjoying it as an extra source of calories and protein. So far, I’m happy with the quality and would recommend it to anyone looking for a convenient mass gainer. ## Frequently Bought Together - Optimum Nutrition Serious Mass, Weight Gainer Protein Powder with Creatine - Nutricost Creatine Monohydrate Micronized Powder 500G, 5000mg Per Serv (5g) - 100 Servings, 17.9 Oz - VOLTRX Premium Electric Protein Shaker Bottle, Made with Tritan - BPA Free - 24 oz Vortex Portable Mixer Cup/USB Rechargeable Shaker Cups for Protein Shakes --- ## 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.co.za/products/3624967-optimum-nutrition-serious-mass-weight-gainer-protein-powder-vanilla-12lb](https://www.desertcart.co.za/products/3624967-optimum-nutrition-serious-mass-weight-gainer-protein-powder-vanilla-12lb) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-09-19*