--- product_id: 50625435 title: "Gold Standard 100% Casein Slow Digesting Protein Powder with Zinc, Magnesium and Amino Acids, Support Muscle Growth & Repair Overnight, Creamy Vanilla Flavour, 55 Servings, 1.82 kg" brand: "optimum nutrition" price: "¥46993" currency: JPY in_stock: true reviews_count: 13 category: "Optimum Nutrition" url: https://www.desertcart.jp/products/50625435-gold-standard-100-casein-slow-digesting-protein-powder-with-zinc store_origin: JP region: Japan --- # 24g slow-release protein per serving 10g essential amino acids fueling muscle repair Zinc & magnesium for immune & protein synthesis support Gold Standard 100% Casein Slow Digesting Protein Powder with Zinc, Magnesium and Amino Acids, Support Muscle Growth & Repair Overnight, Creamy Vanilla Flavour, 55 Servings, 1.82 kg **Brand:** optimum nutrition **Price:** ¥46993 **Availability:** ✅ In Stock ## Summary > 🌙 Fuel your nights, own your mornings with Gold Standard Casein! ## Quick Answers - **What is this?** Gold Standard 100% Casein Slow Digesting Protein Powder with Zinc, Magnesium and Amino Acids, Support Muscle Growth & Repair Overnight, Creamy Vanilla Flavour, 55 Servings, 1.82 kg by optimum nutrition - **How much does it cost?** ¥46993 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/50625435-gold-standard-100-casein-slow-digesting-protein-powder-with-zinc) ## 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 - • **Overnight Muscle Fuel:** Sustained 24g micellar casein delivers a steady amino acid flow while you sleep, maximizing recovery and growth. - • **Immune & Metabolic Boost:** Fortified with zinc and magnesium to support immune health and optimize protein synthesis for peak performance. - • **Creamy Vanilla Indulgence:** Smooth, easy-mix formula with a rich vanilla flavor that turns your nightly protein ritual into a treat. - • **Perfect for Busy Professionals:** Slow-digesting casein keeps you fueled during long shifts or between meals, so you never miss a beat. - • **Essential Amino Acid Powerhouse:** 10g of naturally occurring EAAs per serving to keep your muscles primed and protected around the clock. ## Overview Optimum Nutrition Gold Standard 100% Casein is a premium slow-digesting protein powder delivering 24g of micellar casein and 10g of essential amino acids per serving. Enhanced with zinc and magnesium, it supports muscle growth, repair, immune health, and protein synthesis overnight. Designed for athletes and busy professionals, its creamy vanilla flavor and smooth mixability make it the ideal nighttime protein to sustain muscle recovery and maintain amino acid levels during extended fasting periods. ## Description Product Description Meet Optimum Nutrition Gold Standard 100% Casein, a slow-digesting protein powder for overnight muscle support and repair*.This ready-to-mix powder supports your daily protein intake with 24g protein per serve and provides your body with a slow and steady release of amino acids. Gold Standard 100% Casein protein powder also contains zinc, which contributes to a healthy immune systems and magnesium to support normal protein synthesis. Each serving contains 24 g of premium micellar casein, which provides a sustained supply of amino acids overnight and helps support your muscles before and after high-intensity workouts. This protein powder delivers 10 g of essential amino acids per serving. This convenient protein powder –would be a great addition to an active and healthy lifestyle. Choose between four great tasting options: Chocolate Supreme, Cookies & Cream, Creamy Vanilla, or Strawberry Delight. Thanks to its smooth texture, this protein powder is easy and convenient to prepare. For a tasty and smooth protein shake , add 1 heaped scoop to 300-360 ml of cold water and stir, shake or blend until dissolved. *Protein contributes to the growth and maintenance of muscle mass. To be used in the framework of a varied and balanced diet and healthy lifestyle. Source: Official Journal of the European Union - COMMISSION REGULATION (EU) No 432/2012 Indications Casein proteins are pH sensitive and gel in the acidic environment of the stomach. As a result, it can take more than twice as long for caseins to be broken-down into their amino acid subcomponents than whey and other protein sources. Because of their unique time-released traits, caseins are aptly described as anti-catabolic or muscle-protecting proteins. Casein protein is ideal for use in between meals and before bed. Casein protein is sometimes known as "night time protein" because it's ideal to have just before you go to bed. Ingredients Micellar Casein, Natural and Artificial Flavors, Inulin, Salt, Gum Blend (Cellulose Gum, Xanthan Gum, Carrageenan), Lecithin, Sucralose, Aminogen, FD&C Yellow #5. Directions Add one heaped scoop of Gold Standard 100% Casein with 300 to 350 ml (10 to 12oz) of water or prefered beverage.Use ON 100% Casein Protein first thing in the morning, immediately before bed, in place of small meals and/or any other time when delayed protein absorption is desired. To encourage a positive nitrogen balance, consume approximately one gram of protein per pound of body weight per day from a combination of high protein foods and supplements. For even better results, consume your daily protein allotment over several small meals spread evenly throughout the day. Safety Warning As with any dietary or herbal supplement, you should advise your health care practitioner of the use of this product. If you are nursing, pregnant, or considering pregnancy, you should consult your health care practitioner prior to using this product. Keep out of reach of children.This product is labelled to United States standards and may differ from similar products sold elsewhere in its ingredients, labeling and allergen warnings Legal Disclaimer Food supplements should not be used as a substitute for a varied diet. Do not exceed stated recommended daily dose. Keep out of reach of young children. Storage: always reseal after use, keep in a cool dry place. Manufacturer Contact Information OPTIMUM NUTRITION 4 Waterside, Citywest Business Campus, Dublin 24, Ireland One Victoria Square, Birmingham, B1 1BD, GB gpncustcare@glanbia.com www.optimumnutrition.com/recycle Review: Good value and mixes well - I brought this to use in conjunction with their Whey protein. This is a better solution to having to consume a pot of cottage cheese before bed time. I have also started using it before I go to work. My shift work affords me very few opportunities to eat especially with no scheduled breaks. I tend to graze and this slow release protein helps to keep the amino acid levels topped up throughout the shift. The taste isn't great but palatable. It's more like creamy coconut with hints of vanilla. Mixes into a thick solution. I use 200 ml milk with 100 ml of water. Produces much less froth than milk alone. I also use a scoop and a half. Mixed using a Maximuscle shaker, and shaken for about 10 seconds. I'm pleased with the results but haven't tried any other Casein proteins. Review: Good product - Good product ## Features - SLOW-DIGESTING PROTEIN powder FORTIFIED with zinc which contributes to a healthy immune system and magnesium to support normal protein synthesis - The ready-to-mix powder provides a source of slow digesting protein to support muscle growth and repair* - Each serving contains 24 g of premium micellar casein protein that provides your body with a slow and steady FLOW OF AMINO ACIDS OVERNIGHT - This protein powder contains 10 g of naturally occurring essential amino acids with low sugar in each serving - A PROTEIN source for athletes & fitness enthusiasts; to enjoy, add 1 heaped scoop to 300 ml of cold water and stir, shake or blend until dissolved - *Protein contributes to the growth and maintenance of muscle mass. To be used in the framework of a varied and balanced diet and healthy lifestyle. Source: Official Journal of the European Union - COMMISSION REGULATION (EU) No 432/2012 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B002DYJ0N4 | | Age Range Description | Adult | | Allergen Information | Contains: Gluten Free | | Benefits | Muscle Growth | | Best Sellers Rank | 4,355 in Health & Personal Care ( See Top 100 in Health & Personal Care ) 1 in Casein Nutrition Protein | | Brand | Optimum Nutrition | | Brand Name | Optimum Nutrition | | Customer Reviews | 4.4 out of 5 stars 3,119 Reviews | | Diet Type | Keto | | Diet type | Keto | | Flavour | Vanilla | | Global Trade Identification Number | 00748927024180 | | Item Dimensions | 20.5 x 20.5 x 28.4 centimetres | | Item Weight | 1.75 Kilograms | | Item weight | 1.75 Kilograms | | Manufacturer | Optimum Nutrition | | Manufacturer Contact Information | OPTIMUM NUTRITION 4 Waterside, Citywest Business Campus, Dublin 24, Ireland One Victoria Square, Birmingham, B1 1BD, GB gpncustcare@glanbia.com www.optimumnutrition.com/recycle | | Manufacturer Part Number | 1102171 | | Material Type Free | No Artificial Colors, No Artificial Flavors, No Artificial Sweeteners | | Model Name | Optimum Nutrition Gold Standard Casein Protein Powder | | Model Number | 1102171 | | Net Content Volume | 11.14 Litres | | Number of Items | 1 | | Package Type Name | Tub | | Protein Source | Casein | | Recommended Uses For Product | Post-Workout | | Servings per container | 53 | | Total Servings Per Container | 53 | | UPC | 748927024180 | | Unit Count | 1820.0 gram | ## Product Details - **Brand:** Optimum Nutrition - **Diet type:** Keto - **Flavour:** Vanilla - **Item weight:** 1.75 Kilograms - **Material Type Free:** No Artificial Colors, No Artificial Flavors, No Artificial Sweeteners - **Product benefits:** Muscle Growth - **Protein source:** Casein - **Recommended uses for product:** Post-Workout - **Servings per container:** 53 - **Unit count:** 1820.0 gram ## Images ![Gold Standard 100% Casein Slow Digesting Protein Powder with Zinc, Magnesium and Amino Acids, Support Muscle Growth & Repair Overnight, Creamy Vanilla Flavour, 55 Servings, 1.82 kg - Image 1](https://m.media-amazon.com/images/I/71asdY7t3mL.jpg) ![Gold Standard 100% Casein Slow Digesting Protein Powder with Zinc, Magnesium and Amino Acids, Support Muscle Growth & Repair Overnight, Creamy Vanilla Flavour, 55 Servings, 1.82 kg - Image 2](https://m.media-amazon.com/images/I/713ZVkHw7HL.jpg) ![Gold Standard 100% Casein Slow Digesting Protein Powder with Zinc, Magnesium and Amino Acids, Support Muscle Growth & Repair Overnight, Creamy Vanilla Flavour, 55 Servings, 1.82 kg - Image 3](https://m.media-amazon.com/images/I/81KFoQszvbL.jpg) ![Gold Standard 100% Casein Slow Digesting Protein Powder with Zinc, Magnesium and Amino Acids, Support Muscle Growth & Repair Overnight, Creamy Vanilla Flavour, 55 Servings, 1.82 kg - Image 4](https://m.media-amazon.com/images/I/81FCwzsdUiL.jpg) ![Gold Standard 100% Casein Slow Digesting Protein Powder with Zinc, Magnesium and Amino Acids, Support Muscle Growth & Repair Overnight, Creamy Vanilla Flavour, 55 Servings, 1.82 kg - Image 5](https://m.media-amazon.com/images/I/71yBqaGOq+L.jpg) ## Available Options This product comes in different **Size, Flavor** options. ## Questions & Answers **Q: The label looks different compared to the previous ones 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: Has Gold Standard 100% Casein formula been improved?** A: Our latest formula is now fortified with zinc which contributes to a healthy immune system and magnesium to support normal protein synthesis. Source: Official Journal of the European Union - COMMISSION REGULATION (EU) No 432/2012 **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: 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. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good value and mixes well *by T***A on 10 June 2014* I brought this to use in conjunction with their Whey protein. This is a better solution to having to consume a pot of cottage cheese before bed time. I have also started using it before I go to work. My shift work affords me very few opportunities to eat especially with no scheduled breaks. I tend to graze and this slow release protein helps to keep the amino acid levels topped up throughout the shift. The taste isn't great but palatable. It's more like creamy coconut with hints of vanilla. Mixes into a thick solution. I use 200 ml milk with 100 ml of water. Produces much less froth than milk alone. I also use a scoop and a half. Mixed using a Maximuscle shaker, and shaken for about 10 seconds. I'm pleased with the results but haven't tried any other Casein proteins. ### ⭐⭐⭐⭐⭐ Good product *by N***I on 11 April 2026* Good product ### ⭐⭐⭐⭐⭐ Amazing! *by J***Y on 26 July 2022* Best casein I’ve tried so far, vanilla is definitely better than chocolate. Tastes better and is a lot smoother while chocolate has that grainy texture so I won’t buy that flavour again.. It is a bit better if I shake it with a spoon of peanut butter but if you’re thinking about buying it, I’d recommend vanilla over chocolate any day! I’m also lactose intolerant and this is so far the only casein I’m able to drink without any issue. ## Frequently Bought Together - Optimum Nutrition Gold Standard 100% Micellar Casein Protein Powder, Slow Digesting, Helps Keep You Full, Overnight Muscle Recovery, Creamy Vanilla, 4 Pound (Packaging May Vary) - Optimum Nutrition Gold Standard 100% Whey Protein Powder, Vanilla Ice Cream, 5 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.jp/products/50625435-gold-standard-100-casein-slow-digesting-protein-powder-with-zinc](https://www.desertcart.jp/products/50625435-gold-standard-100-casein-slow-digesting-protein-powder-with-zinc) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-07-16*