Optimum Nutrition Gold Standard Casein 1.8lb

Brand: Optimum Nutrition SKU: IS8999-02

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Optimum Nutrition's Gold Standard Casein Protein is for right after training, you want a fast-acting whey protein to kick-start the recovery process. But between meals and especially right before bed, a slowly digesting micellar casein shake can provide longer lasting muscle rebuilding support. That's important, since the majority of muscle rebuilding takes place at night while you're asleep.

Optimum Nutrition's Gold Standard Casein was the industry's first all-micellar casein protein and it's been America's best-selling casein for many years. 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 proteins. Because of their unique time-released qualities, caseins are aptly described as anti-catabolic or muscle-protecting proteins. Micella Casein is the slowest digesting form of casein. It is seperated from milk through an ultrafilteration process. One of Micellar Casein's unqiue properties is its ability to gel during digestion so it can release a steady flow of amino acids over several hours.

Optimum Nutrition Casein Protein Powder features:

24 grams of micellar casein instantised blend of slow digesting casein based proteins

Support muscle growth and anti-catabolic prevents muscle wasting

Perfect slow release and slow digesting protein formula

Muscle building and fast recovery

Optimum Nutrition Casein Protein Powder contains:

Rich in highly anti-catabolic micellar casein

Over 10 grams of BCAAs, glutamine and glutamine precursors per scoop

Aminogen enhanced

24g micellar casein per serve

The formula is instantised to mix easily, and contains patented digestive enzymes to help your body better utilize the 10 grams of essential amino acids provided in each serving. You'll find that casein mixes up rich and creamy like an ice cream shake.

The remaining 80% of the protein in milk is casein. Often referred to as a “slower acting” or “time released” protein because it is digested and absorbed much more slowly than other proteins, casein proteins are especially useful when taken at bedtime and during other prolonged periods without eating. Casein proteins are especially useful when taken at bedtime or between meals, so that amino acids can be delivered to muscles for a longer period of time. It takes longer to digest and empty from the stomach compared to other proteins.

Available Sizes:

Container Size: 909G (1.8lb)

Serving Size: 1 Scoop (34g)

Servings Per Container: 29

Container Size: 1.818 KG (4lb)

Serving Size: 1 Scoop (34g)

Servings Per Container: 56

Directions:

Add 1 heaping scoop of Gold Standard 100% Casein to your shaker cup and then pour in 295mL-354mL of your preferred beverage. Cover and shake for 25-30 seconds.

Please Note: Nutritional Information is to be used as a guide only, actual values may differ between flavours and sizes and when formulations are modified or updated by the manufacturer.

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Frequently Asked Questions

Developed with sports nutritionists — effective doses, no fillers, no proprietary blends hiding the label.

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1. Do you deliver New Zealand-wide, and how long does shipping take?

Yes, nationwide. Orders are picked, packed and sent out within 24 hours. Once it leaves the store, you'll get a tracking link by email.

Auckland and the North Island usually land the next day. South Island standard shipping runs 2 to 3 days, with an overnight option if you'd rather pay for speed. Add a day for rural addresses. NZ Post doesn't operate weekends, so anything ordered on a Saturday or Sunday goes out the following business day. Got a date you need to hit? Order with a few days' margin. The shipping policy page has the full regional breakdown.

2. Can I click and collect instead of having my order delivered?

Yes. Click & Collect runs at all four Auckland stores. No courier involved at all if one of them fits your route.

Pick a store at checkout. We'll email when it's ready; bring that confirmation in with you. For customers near Papakura, Pukekohe, Papatoetoe or Mt Wellington, it's often the faster path. NZ Post's schedule doesn't come into it.

3. Which Infinity Supplements stores can I visit?

Four stores, all in Auckland. Papakura is at 3/69 Great South Road. Pukekohe is 8 Hall Street. Papatoetoe sits at 158 Kolmar Road, and Mt Wellington is 430A Ellerslie Panmure Highway. Hours aren't uniform across them. Mt Wellington stays open the latest on weekdays. Papakura and Papatoetoe tend to close around 6pm. Check the Our Stores page for the current hours at each.

Pukekohe doubles as our head office. The business started there in 2015, run by family and friends. Four stores later, that's still home base.

4. What payment methods can I use, and is Buy Now Pay Later available?

Credit card via the Windcave gateway, or direct bank transfer. Everything's in New Zealand dollars.

Prefer to pay it off gradually? Afterpay and Zip are both there at checkout. Take the order home now, spread the cost later. Nothing needs setting up beforehand, just pick it on the payment screen.

5. Do you ship internationally, and will I owe customs charges?

We do ship overseas. Customs duties and local taxes on arrival land on the customer, not us. Check with your own country's customs agency beforehand. Unpaid charges won't be refunded on our end.

Domestic NZ orders don't carry any of this risk. Our listed prices already include GST, so what you see at checkout is the final number.

Optimum Nutrition Gold Standard Casein 1.8lb

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