--- product_id: 1262095 title: "Optimum Nutrition Gold Standard Pro Gainer Protein, Double Chocolate, 5 LB | Weight Gainer Protein Powder, High-Calorie Mass Gainer, 60g Protein per Serving, High Carbs, Vitamins & Minerals, Easy Mixing" brand: "optimum nutrition" price: "Β₯38400" currency: JPY in_stock: true reviews_count: 11 category: "Optimum Nutrition" url: https://www.desertcart.jp/products/1262095-optimum-nutrition-gold-standard-pro-gainer-protein-double-chocolate-5 store_origin: JP region: Japan --- # 85g carbs for energy 60g premium protein blend 650 calories per serving Optimum Nutrition Gold Standard Pro Gainer Protein, Double Chocolate, 5 LB | Weight Gainer Protein Powder, High-Calorie Mass Gainer, 60g Protein per Serving, High Carbs, Vitamins & Minerals, Easy Mixing **Brand:** optimum nutrition **Price:** Β₯38400 **Availability:** βœ… In Stock ## Summary > πŸ’₯ Double Chocolate Power-Up: Slow, steady, and seriously effective gains! ## Quick Answers - **What is this?** Optimum Nutrition Gold Standard Pro Gainer Protein, Double Chocolate, 5 LB | Weight Gainer Protein Powder, High-Calorie Mass Gainer, 60g Protein per Serving, High Carbs, Vitamins & Minerals, Easy Mixing by optimum nutrition - **How much does it cost?** Β₯38400 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/1262095-optimum-nutrition-gold-standard-pro-gainer-protein-double-chocolate-5) ## 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 - β€’ **Immune Boosting Formula:** Infused with Vitamin C, Zinc & Vitamin E to keep your defenses strong during intense training. - β€’ **Effortless Mixing, Anytime:** Blender, shaker, or spoon – mixes smoothly for a quick, delicious recovery shake. - β€’ **Protein-Packed for Lean Mass:** 60g of high-quality whey & casein protein to support sustained muscle synthesis. - β€’ **Carb Charge for Maximum Energy:** 85g of carbs to replenish glycogen and keep you energized post-workout. - β€’ **Fuel Your Gains with Precision:** 650 calories designed to power your muscle growth and recovery. ## Overview Optimum Nutrition Gold Standard Pro Gainer in Double Chocolate is a scientifically crafted weight gainer delivering 650 calories, 60g of premium protein, and 85g of carbs per serving. Enhanced with 32 vitamins and minerals including immune-supporting Vitamin C, Zinc, and Vitamin E, it’s designed for active adults seeking lean muscle growth and sustained energy. Easy to mix and delicious, it’s the go-to post-workout or between-meal shake for millennial professionals committed to smart, steady gains without the bloat. ## Description Putting on size requires a balance of heavy training and quality nutrition. Because everyone's a little different, some have a harder time packing on muscle than others. PRO Gainer is a high-protein formula delivering calories that count during recovery. Each shake provides ample supplemental protein, carbs, vitamins and minerals to build on the amount you're getting through a balanced diet of food. Use PRO Gainer as your post-workout recovery shake and/or high-protein meal between meals. Review: Easy to drink - I bought this Pro Gainer from Optimum Nutrition because I am looking to gain weight and, so far, it has fulfilled what I expected. The Double Chocolate flavor is pleasant, it does not feel too sweet and mixes quite well with milk or water without leaving many lumps. Review: SO GOODD! - Usually never do reviews but this weight gainer is pretty good. I'm 5'7 and started at 149lbs and now I'm at 155/156lbs Pros: -Saw about 8lbs of weight gain over almost a month which is good if you want a lean bulk, if you want to gain weight fast this is not the protein powder for you. -I'm a lot less sore from my workouts. I train as a power lifter and I've noticed significantly decreased DOMS. -minimal bloating and discomfort -The taste is really good. I prefer the vanilla though because it is easier to mix with other flavors. Cons: - Slow weight gain (again not meant to bulk you up fast but slow ,steady, and lean which in the long run is better so you have less fat to cut) -You should weigh your portions, the cup they provide will definitely not get you the serving size. ## Features - Vitamin C and Zinc Provides Immune Support along with Vitamin E - 650 CALORIES - delivering calories that count to support your gains - 60G PROTEIN BLEND - support your mass gaining goals with high-quality protein - 85G CARBOHYDRATES - help restore energy levels - 7g SUGAR (OR LESS) - 32 VITAMINS & MINERALS - because the nutrient needs of very active individuals may be greater than those of less active people - GREAT POST-WORKOUT OR BETWEEN MEALS - MIXES EFFORTLESSLY - use a blender, shaker, or spoon to easily mix - AVAILABLE IN 5 LB TUBS OR 10 LB BAGS ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0015R3A1S | | Age Range Description | Adult | | Allergen Information | Milk, Soy | | Best Sellers Rank | #15,790 in Health & Household ( See Top 100 in Health & Household ) #8 in Sports Nutrition Weight Gainers #1,392 in Sales & Deals | | Brand | Optimum Nutrition | | Brand Name | Optimum Nutrition | | Customer Reviews | 4.6 out of 5 stars 1,391 Reviews | | Diet Type | Kosher | | Flavor | Double Chocolate | | Global Trade Identification Number | 00748927029710 | | Item Dimensions | 8.06 x 8.06 x 11.18 inches | | Item Weight | 5.1 pounds | | Manufacturer | Optimum Nutrition - NutWell | | Manufacturer Part Number | 1077890 | | Model Name | GS - Pro-Gainers Weight Gainer - Protein Powder | | Model Number | 1077890 | | Number of Items | 1 | | Package Type Name | Tub | | Product Benefits | Muscle Growth, Weight Gain | | Protein | 35.5 g, 60 g | | Protein Source | Casein, Whey | | Recommended Uses For Product | Immune Support | | Servings per Container | 14 | | Total Servings Per Container | 14 | | UPC | 748927029710 | | Unit Count | 81.44 Ounce | | Vitamins And Minerals | 0.55, 29, 330, 340, 4, 600, 7.5, 80 milligrams, 20, 25, 340, 35, 50, 60 percent_daily_value_fda | ## Product Details - **Brand:** Optimum Nutrition - **Diet Type:** Kosher - **Flavor:** Double Chocolate - **Item Weight:** 5.1 pounds - **Servings per Container:** 14 ## Images ![Optimum Nutrition Gold Standard Pro Gainer Protein, Double Chocolate, 5 LB | Weight Gainer Protein Powder, High-Calorie Mass Gainer, 60g Protein per Serving, High Carbs, Vitamins & Minerals, Easy Mixing - Image 1](https://m.media-amazon.com/images/I/71HWFC-+vVL.jpg) ## Available Options This product comes in different **Size, Flavor** options. ## Questions & Answers **Q: what's the difference between this one and serious mass?** A: This is much easier to digest, healthier, better protein and nutrients and only one scoop compared to 4 which becomes chalky and hard to drink. This tastes a lot better than serious mass and is much easier to drink overall. I drank this with reduced fat milk for 3-4 months straight and gained 20 lbs. of course I was also tracking and lifting weights, but this helped a ton to get those extra 800 calories I needed that I couldn’t obtain through meals and a lot of cooking. **Q: I'm most concerned about it causing gas. Any comments?** A: NO Gas with vanilla custard and i give this to my 98 yr old MOTHER who weight 80 LBS as a supplement !! SHE Wd get it cuase shes in a wheelchair- Just finished a 10 lb bag.. DO need to drink WATER cuase HIGH protein can stop u up.. I also add ice cream to it:) tastes great! Good stuff- Doc approved! Shes in GREAT shape + he does Labs on her al the time. **Q: If this is so good, it makes me wonder why it has twice the protein and is $45 cheaper per 10lb bag than Gold Standard - the same company.** A: Which Gold Standard are you looking at? This is a lean weight gainer vs protein vs bulking weight gainer. Sometimes the wholesalers give us deals if we purchase a large amount at a time. Some sellers (myself included) will discount the price in relationship with the "cost" associated with the product I sell. **Q: Which is better for bulk muscle mass: serious mass or pro gainer** A: Serious Mass is a high-calorie gainer with 1,250 calories and 60 grams of protein per serving. PRO Gainer is a high-protein gainer with 60 grams of protein per serving at 650 calories. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Easy to drink *by E***L on July 10, 2026* I bought this Pro Gainer from Optimum Nutrition because I am looking to gain weight and, so far, it has fulfilled what I expected. The Double Chocolate flavor is pleasant, it does not feel too sweet and mixes quite well with milk or water without leaving many lumps. ### ⭐⭐⭐⭐⭐ SO GOODD! *by K***T on June 4, 2025* Usually never do reviews but this weight gainer is pretty good. I'm 5'7 and started at 149lbs and now I'm at 155/156lbs Pros: -Saw about 8lbs of weight gain over almost a month which is good if you want a lean bulk, if you want to gain weight fast this is not the protein powder for you. -I'm a lot less sore from my workouts. I train as a power lifter and I've noticed significantly decreased DOMS. -minimal bloating and discomfort -The taste is really good. I prefer the vanilla though because it is easier to mix with other flavors. Cons: - Slow weight gain (again not meant to bulk you up fast but slow ,steady, and lean which in the long run is better so you have less fat to cut) -You should weigh your portions, the cup they provide will definitely not get you the serving size. ### ⭐⭐⭐⭐⭐ ON Gainer Helped Turn My Life Around *by N***R on March 9, 2018* This product may have been almost a life saver for me. I have been using it for 10 years. I became seriously ill about a decade ago and was losing weight for unknown reasons. I am 5'10" and used to weigh in the mid 160s prior to my illness. Finally after dropping to the upper 120s my doctor recommended that I try drinking gainer shakes though he didn't mention this product in particular. I happened to mention my weight loss dilemma to my brother-in-law who pointed me to this product. So glad that he did. I started out drinking two servings per day and usually add a scoop of ice cream to it in the blender. It tastes fine to me with plain water but the ice cream makes the drink pleasingly colder. Anyhow, this put a stop to my nose diving weight and gradually pushed me into the low 130s which helped me feel some relief about my condition. About a year later I joined a gym and started working out with weights 3 times a week at least an hour each time, plus did some weight lifting at home in between. Slowly, slowly my weight raised into a more respectable mid 140s after about a year of weight lifting exercices plus this product 2X a day. Roughly 3 years later with my weight seemingly stuck in the 140s I decided to reduce it to one serving a day. I always monitor my weight and it remained basically the same. About a year ago I reduced use of this to a half serving, 6 days a week. I continue to work out at the gym and at home like usual. My upper body strength has increased especially my arms/biceps/triceps and pec muscles even at the reduced half serving of gainer plus my usual scoop of ice cream in the blender. I am happy to say my weight over the last 6 months has been lifted to almost the same level as I had prior to my illness. I am currently bumping up on the 160 lbs mark. So I have been using this for 10 years straight now plus going at my weight lifting for nearly that long a time. When I look in the mirror I grin at the results I have had over this LONG period of time. But I give a lot of credit to this gainer product and my doctors who initially encouraged me to use something like this many years back. I tend to drink mine now in the mid afternoon after my gym or home workouts and in between lunch and dinner. It does sometimes take away my appetite a bit if I drink it too close to dinner, especially back in the beginning when I was drinking two servings a day. Now at half a serving the appetite loss is much less of a problem. Will I ever stop using this altogether? Maybe, but not just yet. I do think there is a correlation between using this after a workout and building your muscle tissue so I may eternally use this at half strength based just on that. By the way, adding a scoop of ice cream to it in the blender not only makes it tastier and creamier but also adds some extra calories and calcium (I believe). The double chocolate is my favorite and adding some mint ice cream is wonderfully tasty. I think overall this product tastes great, even those times that I simply use plain water without anything more. ## Frequently Bought Together - Optimum Nutrition GS Pro Gainer Weight Gainer Protein Powder, Double Chocolate, 5.09 Pounds (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? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/1262095-optimum-nutrition-gold-standard-pro-gainer-protein-double-chocolate-5](https://www.desertcart.jp/products/1262095-optimum-nutrition-gold-standard-pro-gainer-protein-double-chocolate-5) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-07-31*