








⏳ Fuel your muscles overnight, wake up stronger!
Optimum Nutrition Gold Standard 100% Casein is a premium slow-digesting protein powder designed to support muscle growth and repair overnight. Each serving provides 24g of micellar casein protein, delivering a sustained release of amino acids, along with 10g of essential amino acids, zinc for immune health, and magnesium to support protein synthesis. With a creamy vanilla flavor and 55 servings per 1.82 kg tub, it’s ideal for fitness enthusiasts seeking effective overnight recovery and muscle maintenance.
















| - Saturates | 1.2 g |
| - Sugars | 4.2 g |
| ASIN | B002DYJ0N4 |
| ASIN | B002DYJ0N4 |
| Age Range Description | Adult |
| Allergen Information | Contains: Gluten Free |
| Best Sellers Rank | 3,333 in Health & Personal Care ( See Top 100 in Health & Personal Care ) 2 in Casein Nutrition Protein |
| Brand | Optimum Nutrition |
| Carbohydrate | 11.0 g |
| Country of origin | United Kingdom |
| Country of origin | United Kingdom |
| Customer Reviews | 4.4 4.4 out of 5 stars (12,489) |
| Customer reviews | 4.4 4.4 out of 5 stars (12,489) |
| Date First Available | 19 Aug. 2009 |
| Department | GNC|ALL|ALL|PWD DIET W MILK NUT FACT |
| Energy (kJ) | 1482.00 kJ |
| Energy (kcal) | 354.20 kcal |
| Fat | 1.8 g |
| Format | Powder |
| Is discontinued by manufacturer | Yes |
| Item model number | 1102171 |
| Magnesium | 283.0 milligrams (75.47% NRV) |
| Manufacturer | OPTIG |
| Manufacturer contact | 4 Waterside, Dublin 24, Ireland |
| Product Dimensions | 20.48 x 20.48 x 28.38 cm; 1.75 kg |
| Protein | 73.0 g |
| Salt | 1.4 g |
| Serving Recommendation | 1 Heaping Scoop |
| Serving Size | 100 g |
| Units | 1820.0 Grams |
| Use By Recommendation | Use before bed and post workout |
| Weight | 1.81 kg |
| Zinc | 7.6 milligrams (76% NRV) |
R**T
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.
J**R
Tastes well
Didn’t receive this order but I’ve had it before. Usually tastes pretty well.
D**D
Good quality
Works well
J**K
Good product
Can’t fault the fact that it does keep me feeling fuller for longer, as I don’t eat when I’m working (I’m a carpenter). But compared to normal whey protein this stuff is very dry tasting and a little powdery. Also it’s a super fine dust that sticks to absolutely everything if you spill it 😂 besides that it tastes good and can feel a difference
H**K
Great taste and works well to relieve pain
I used this as a muscle pain reliever, worked almost immediately after first night use. It is very gelatenous when mixed in water or my preferred Milk. The powder does dissolve well and tastes great.
G**L
Optimum nutrition gold standard 100% casin.
Very good for taking just before bed. It releases slow amino acids to keep your muscles fuel doing the night up to 7-8 hours. That's why I have casin just before bed.
J**N
Casein Protein Powder Review
I recently tried this casein protein powder, and honestly, it wasn’t the best experience. The texture is much too thick, which makes it difficult to mix properly even with a shaker or blender. Once it’s mixed, the consistency is still heavy and hard to drink. The flavor also leaves a lot to be desired — it doesn’t taste very good and feels more like a chore than a supplement I’d look forward to. Overall, I appreciate that casein is supposed to digest slowly and support overnight recovery, but the texture and taste of this particular powder make it hard to recommend.
S**Y
I recommend this 100% to everybody that is looking for high quality casein.
This is great casein - I've always been a bit skeptical after reading from a few places about how this can be a carcinogen, but the study it's taken from is massively biased and not really applicable to humans. If you're after a supplement to take at night just so your body doesn't starve itself of proteins during synthesis while you're asleep, this is what you need. A lot of people take just whey during the day which is fine, but this is making sure you are never low on protein during your whole day cycle. I recommend this 100% to everybody that is looking for high quality casein. Now, the truth about Casein itself is pretty straightforward. The study was done on mice - not humans. It's true that Casein is a slow release protein and it does sit in the colon for a while, but that's true for anything honestly. If you eat or drink late at night, it will sit in your stomach for a good 8 hours (minimum) until you wake up. There's nothing wrong with that because the body has a natural suppressive effect on its own digestive system which occurs around 2am every morning. Also, Casein is made by heating up milk into a powder. Using lower quality milk from questionable places during this process will probably come with some side-effects but this is Optimum Nutrition - as long as they keep using high-standard ingredients everything will be fine. That being said, I have only ever trusted Casein from ON themselves, I just don't see the strong track record with other brands. If you're thinking about getting this you probably should. Don't cheap out - get the good stuff.
A**N
Me encanta el sabor. Espesa bastante en bebida de almendras. Se disuelve mal, pero con batidora o espumador de leche queda perfecto.
M**H
Good
P**I
Casein has been a critical part of my diet since I started training on an empty stomach, usually after not eating for 16+ hours. "How is that possible?" you might ask. The answer: Casein. When milk is digested, it breaks down into curds (casein) and whey. Whey is the go-to source of protein before and after working out because it's fast acting. Casein, on the other hand, takes a long time to digest, making it a great source of late night protein leading up to hours of fasting. Why go with Gold Standard? - I personally think it's delicious, but that's just my taste. It's pretty sweet, so I would recommend just mixing with water (plenty of water, because this stuff is thick). - It doesn't have a thousand ingredients like a lot of other supplements out there. - Price Personal use: - I usually only eat within an eight hour window between 1:00 PM and 9:00 PM, and work out sometime between 12:00 PM - 1:00 PM. As my last meal of the day, I either drink some Casein or eat some cottage cheese (which is essentially the same thing as casein, but can be more expensive and more of a hassle to buy). Because it is more slowly digested, Casein keeps me full and ready to lift as I hit the gym the following afternoon. Bottom line: - Great tasting, cheap, and essential part of my diet. Highly recommended.
K**Z
He probado otras caseinas, pero esta de ON es inmejorable. Se disuelve super bien y el sabor de fresa es bueno. no como otras marcas que tienes una consistencia bastante desagradable y es un dolor de cabeza después lavar el vaso del licuado por lo pegajoso.
R**V
I use this as a meal replacement maybe 3 times a week and it really helps. The nutritional value and protein quality are both excellent for the price as far as im aware.The ingredients are simple and not packed with junk, which I appreciate. The seal is always tight and fresh when it arrives. It mixes easily with milk or water, tastes good enough for a protein. If I mix a banana, oatmeal, a scoop and a half, and sometimes whatever else I'm feeling - Blend for a little and you can use anything to mix it, it'll taste great.
Trustpilot
2 weeks ago
2 weeks ago