--- product_id: 47922816 title: "Optimum Nutrition Gold Standard 100% Casein Slow Digesting Protein Powder with Zinc and Magnesium, Keto, Support Muscle Growth & Repair Overnight, Chocolate Supreme, 55 Servings, 1.82 kg" brand: "optimum nutrition" price: "€ 178.87" currency: EUR in_stock: true reviews_count: 13 category: "Optimum Nutrition" url: https://www.desertcart.pt/products/47922816-optimum-nutrition-gold-standard-100-casein-slow-digesting-protein-powder store_origin: PT region: Portugal --- # 24g slow-digesting micellar casein 10g essential amino acids per serving Zinc & magnesium for immune & protein synthesis support Optimum Nutrition Gold Standard 100% Casein Slow Digesting Protein Powder with Zinc and Magnesium, Keto, Support Muscle Growth & Repair Overnight, Chocolate Supreme, 55 Servings, 1.82 kg **Brand:** optimum nutrition **Price:** € 178.87 **Availability:** βœ… In Stock ## Summary > πŸŒ™ Fuel your gains overnight with the gold standard in slow-release protein! ## Quick Answers - **What is this?** Optimum Nutrition Gold Standard 100% Casein Slow Digesting Protein Powder with Zinc and Magnesium, Keto, Support Muscle Growth & Repair Overnight, Chocolate Supreme, 55 Servings, 1.82 kg by optimum nutrition - **How much does it cost?** € 178.87 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/47922816-optimum-nutrition-gold-standard-100-casein-slow-digesting-protein-powder) ## 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€’ **Sustained Muscle Fuel:** 24g of premium micellar casein delivers a slow, steady amino acid release overnight to maximize muscle repair while you rest. - β€’ **Immune & Metabolic Boost:** Fortified with zinc and magnesium, this formula supports a healthy immune system and optimal protein synthesis. - β€’ **Keto-Friendly & Low Sugar:** Designed for the modern fitness enthusiast, it fits perfectly into keto lifestyles with minimal sugar content. - β€’ **Smooth Mix & Delicious Flavor:** Chocolate Supreme flavor blends effortlessly into a creamy, clump-free shakeβ€”perfect for your nightly ritual. - β€’ **Essential Amino Acid Powerhouse:** Each serving packs 10g of naturally occurring essential amino acids to support muscle growth and recovery. ## 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. Keto-friendly and low in sugar, this smooth-mixing Chocolate Supreme formula is designed for overnight muscle recovery and sustained amino acid release, making it a top choice for fitness-focused professionals. ## 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 Ingredients Micellar Casein, Cocoa, Natural and Artificial Flavours, Salt, Soy Lecithin, Cellulose Gum, Xanthan Gum, Acesulfame Potassium (61 mg/serving), Carrageenan, Sucralose. Directions Add one heaped scoop of Gold Standard 100% Casein with 300 to 350 ml (10 to 12 oz) 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: 5+ stars - Optimum Nutrition's Gold Standard 100% Casein is a top-tier product in the world of protein supplements. As someone who values slow-digesting protein sources, this product has been a game-changer for my fitness routine and overall nutrition. One of the standout features of this casein protein is its slow-release formula. It's perfect for those looking to maintain a steady supply of amino acids throughout the day or to support muscle recovery during the night. This slow digestion not only helps with muscle growth but also keeps me feeling fuller for longer, which is a great bonus if you're watching your calorie intake. The taste and mixability are impressive. It mixes easily with water or milk, creating a smooth and creamy shake without clumps. Quality is paramount when it comes to supplements, and Optimum Nutrition is a trusted brand known for its commitment to quality and purity. The Gold Standard 100% Casein is no exception. It's made from high-quality micellar casein, providing a clean source of protein without unnecessary fillers or additives. I also appreciate the versatility of this product. It's not just limited to shakes; I've used it in recipes like protein pancakes and yogurt, adding a delicious protein boost to my meals. While it's a bit pricier compared to some other protein options, the quality and performance make it worth the investment, especially if you prioritize slow-digesting protein for your fitness goals. Overall, Optimum Nutrition Gold Standard 100% Casein is a reliable and effective choice for those seeking a premium casein protein supplement. Review: Recommend - Love this and look forward to drinking this in the evenings ## 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 | B002DYJ0M0 | | Age Range Description | Adult | | Allergen Information | Contains: Milk, Soy | | Benefits | muscle recovery | | Best Sellers Rank | 3,707 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 9,026 Reviews | | Diet Type | Keto | | Diet type | Keto | | Flavour | Chocolate | | Global Trade Identification Number | 00748927024227 | | Item Dimensions | 20.5 x 20.5 x 28.4 centimetres | | Item Weight | 64 Ounces | | Item weight | 64 Ounces | | 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 | 1031646 | | Material Type Free | No Artificial Colors, No Artificial Flavors, No Artificial Sweeteners | | Model Name | Optimum Nutrition Gold Standard Casein Protein Powder | | Model Number | 1031646 | | Net Content Volume | 11.14 Litres | | Number of Items | 1 | | Package Type Name | Tub | | Recommended Uses For Product | Fitness | | Servings per container | 53 | | Total Servings Per Container | 53 | | UPC | 748927024227 | | Unit Count | 1820.0 gram | ## Product Details - **Brand:** Optimum Nutrition - **Diet type:** Keto - **Flavour:** Chocolate - **Item weight:** 64 Ounces - **Material Type Free:** No Artificial Colors, No Artificial Flavors, No Artificial Sweeteners - **Number of items:** 1 - **Product benefits:** muscle recovery - **Recommended uses for product:** Fitness - **Servings per container:** 53 - **Unit count:** 1820.0 gram ## Images ![Optimum Nutrition Gold Standard 100% Casein Slow Digesting Protein Powder with Zinc and Magnesium, Keto, Support Muscle Growth & Repair Overnight, Chocolate Supreme, 55 Servings, 1.82 kg - Image 1](https://m.media-amazon.com/images/I/71g7O7uYioL.jpg) ![Optimum Nutrition Gold Standard 100% Casein Slow Digesting Protein Powder with Zinc and Magnesium, Keto, Support Muscle Growth & Repair Overnight, Chocolate Supreme, 55 Servings, 1.82 kg - Image 2](https://m.media-amazon.com/images/I/71IoqmybBHL.jpg) ![Optimum Nutrition Gold Standard 100% Casein Slow Digesting Protein Powder with Zinc and Magnesium, Keto, Support Muscle Growth & Repair Overnight, Chocolate Supreme, 55 Servings, 1.82 kg - Image 3](https://m.media-amazon.com/images/I/81KFoQszvbL.jpg) ![Optimum Nutrition Gold Standard 100% Casein Slow Digesting Protein Powder with Zinc and Magnesium, Keto, Support Muscle Growth & Repair Overnight, Chocolate Supreme, 55 Servings, 1.82 kg - Image 4](https://m.media-amazon.com/images/I/81FCwzsdUiL.jpg) ![Optimum Nutrition Gold Standard 100% Casein Slow Digesting Protein Powder with Zinc and Magnesium, Keto, Support Muscle Growth & Repair Overnight, Chocolate Supreme, 55 Servings, 1.82 kg - Image 5](https://m.media-amazon.com/images/I/71kNquB4orL.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 ### ⭐⭐⭐⭐⭐ 5+ stars *by R***T on 7 October 2023* Optimum Nutrition's Gold Standard 100% Casein is a top-tier product in the world of protein supplements. As someone who values slow-digesting protein sources, this product has been a game-changer for my fitness routine and overall nutrition. One of the standout features of this casein protein is its slow-release formula. It's perfect for those looking to maintain a steady supply of amino acids throughout the day or to support muscle recovery during the night. This slow digestion not only helps with muscle growth but also keeps me feeling fuller for longer, which is a great bonus if you're watching your calorie intake. The taste and mixability are impressive. It mixes easily with water or milk, creating a smooth and creamy shake without clumps. Quality is paramount when it comes to supplements, and Optimum Nutrition is a trusted brand known for its commitment to quality and purity. The Gold Standard 100% Casein is no exception. It's made from high-quality micellar casein, providing a clean source of protein without unnecessary fillers or additives. I also appreciate the versatility of this product. It's not just limited to shakes; I've used it in recipes like protein pancakes and yogurt, adding a delicious protein boost to my meals. While it's a bit pricier compared to some other protein options, the quality and performance make it worth the investment, especially if you prioritize slow-digesting protein for your fitness goals. Overall, Optimum Nutrition Gold Standard 100% Casein is a reliable and effective choice for those seeking a premium casein protein supplement. ### ⭐⭐⭐⭐⭐ Recommend *by C***Y on 8 August 2026* Love this and look forward to drinking this in the evenings ### ⭐⭐⭐⭐⭐ Nice taste, but thick texture. A bit difficult to dissolve for shakes but is brilliant to make protein pudding dessert! *by G***3 on 20 June 2013* My first attempt to make a protein shake with this Casein powder wasn't very successful, as it doesn't dissolve as well as whey protein, even with a shaker (I found that mixing it first in a bowl/glass with a small amount of liquid then adding more liquid is easier to dissolve it properly. I actually took advantage of the thick-high absorbing properties to use it to make protein pudding, with the following proportions: 20g of casein powder, 70ml of unsweetened almond milk (or other milk), 50g of fat-free yogurt, 3g of unsweetened cocoa powder, 5g of peanut butter, mix well and chill in the fridge for 30min at least, it will get smoother and thicken even more resulting in a delicious chocolate peanut butter mousse/pudding. It tastes like an indulgent dessert for only150kcal : 21g protein, 6g carbs of which 3g of sugar, 4g of fat (good unsaturated fat from the peanut butter). Being low in sugar, it's healthier than most desserts and it has also replaced my usual chocolate fix! I agree with another customer on a kind of "cappuccino"-like smell of the dry powder, but once dissolved the chocolate taste is nice. I have also tried the vanilla as a sample, which tastes like vanilla ice cream. Both are properly sweetened for most people taste I think, however I have cut my sugar consumption for the past two months and being more sensitive to any sweetness, I now find it a bit too sweet to my taste, but I will keep buying it anyway. ## Frequently Bought Together - Optimum Nutrition Gold Standard 100% Micellar Casein Protein Powder, Slow Digesting, Helps Keep You Full, Overnight Muscle Recovery, Chocolate Supreme, 4 Pound (Packaging May Vary) - Optimum Nutrition Gold Standard 100% Whey Protein Powder, Double Rich Chocolate, 5 Pound (Packaging May Vary) - Optimum Nutrition Micronized Creatine Monohydrate Powder, Unflavored, 120 Servings, 600 Grams (Packaging May Vary) --- ## 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.pt/products/47922816-optimum-nutrition-gold-standard-100-casein-slow-digesting-protein-powder](https://www.desertcart.pt/products/47922816-optimum-nutrition-gold-standard-100-casein-slow-digesting-protein-powder) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-09-23*