Your loyalty points
Don’t have an account?
Already have an account?
Optimum Nutrition 100% Casein Protein
Pay it in 6 weekly automatic payments, interest free. Easy.
Proceed to checkout. Select Laybuy as your payment method.
Log in or sign up for an account in minutes.
Choose your payment day. View your schedule and select pay now.
Your items are on their way. Payments will be taken automatically each week.
Order before 12pm to have your ordered despatched on the same day
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. Contact us if you are have any questions regarding this products ingredients.
Sometimes slower is better - especially when it comes to the rate of protein digestion. While rapid protein absorption is desirable immediately before or after exercise, delayed release is probably more beneficial throughout the remainder of the day. 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. Casein is the most abundant protein present in milk. It is considered a high quality protein because it is easily assimilated and it supplies sufficient quantities of amino acids that cannot be synthesized by the body.Another benefit is increased satiety (feeling of fullness or satisfaction). Casein exerts a slight pressure on the stomach walls. In effect, this pressure signals to the brain to stop eating because the stomach is full. Casein is the most slowly digested and absorbed type of protein. This helps create a "timed-release" effect, providing a steady stream of amino acids to your muscles over a long period of time. The net result is a greatly enhanced anti-catabolic environment which is much more friendly to growth and recovery.Bodybuilders and athletes looking to build lean muscle, prevent muscle breakdown, and reduce recovery times, and individuals interested in improving the quality of their sleep can greatly benefit from casein.Casein ResearchPerhaps the most interesting kernel on casein to come from the scientific community is the Boirie study, which found that casein managed about a 31% increase in protein synthesis (to whey's 68%)... but also reduced whole-body protein degradation (catabolism) by 34%. More importantly, researchers found that casein contributed to a positive nitrogen balance an average of 7 hours after ingestion.The Biorie study has since spurred further research of casein. Another study looked at the effect casein might have on body composition when used as part of a 12-week weight-training program. Participants were separated into two groups, each of which maintained a balanced diet including 75 grams of protein per day. The difference was in the sources of protein used: while the first group relied on whey-based drinks to reach their daily protein requirements, the second group made use of milk protein isolates (80% casein, 20% whey). At the end of the study, the milk protein isolate group had lost more fat (15.4 lbs. vs. 9.2 lbs.), gained more lean mass (9 lbs. vs. 4.4 lbs.), and gained more upper and lower body strength than the whey group.BEYOND THE BASICS
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 1 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.
Container: 2 Lbs.One Serving: 1 Heaping ScoopServings Per Container: 29
Please note with the large number of public holidays over the Christmas and New Year period, orders will be dispatched on "working days" between 29-31st December. This means you may not receive your order until the New Year once normal business hours resume on the 5th January and couriers are in operation again.
Couriers do not operate on public holidays.
Spend over $60 to qualify for free standard shipping via CourierPost.
Orders under $60 are charged a flat rate of $2.99.
Estimated delivery times* during normal work hours, Monday-Friday:Auckland - overnight deliveryNorth Island - overnight delivery South island - overnight, or 2 days with economy (for larger parcels)Rural addresses - will take longer than the above stated timeframes
*During sale and holiday periods dispatch and delivery may take longer with larger volumes of orders. If you need your order in a hurry, select one of our upgrade options.
No deliveries on weekends and public holidays.
Order before 3pm Monday to Friday (excluding public holidays) and your order will be delivered between 6-9pm that evening. This shipping option will only be displayed for valid Auckland addresses at check-out. If ordering on the weekend, your parcel will be shipped the next business day for delivery that evening. If there is no one home to sign for the parcel or it can't be left in a safe place, your parcel will via transferred to the depot for standard NZ Post delivery.
Get your order delivered between 6-9pm in Auckland for a flat fee of $15 (excluding public holidays).
To qualify, order before 3:45pm Monday to Friday and select Urgent Tonight at check out. No deliveries on weekends and public holidays.
Check if your address is with the Urgent Tonight service area. Delivery areas include suburban areas from Albany to Papakura.
$10 per shipment - order before 3:45pm to qualify. Valid weekdays, rural addresses will take longer. No deliveries on weekends and public holidays.
Jump the queue and ensure your order gets packed and dispatched ahead of the pack for $10 (Sunday-Friday). Your order will be prioritised by a dedicated team member for dispatch. Delivery is via CourierPost standard delivery - signature required (this is not express shipping). This option is great during sale and holiday periods when we have high volumes of orders.
Order online and collect your order from your preferred collection point. Please allow up to three working days for your order to be available for collection. We will contact you when it’s ready.
Items such as gym equipment will be shipped via our freight forwarders and will take longer to deliver due to the size of the goods being shipped. These items are unable to be freighted via plane. Unfortunately as these are manual bookings it is not always possible to provide tracking numbers. If you require an update on the shipment of a bulky item, please contact us at firstname.lastname@example.org with your order number.
In the event of receiving damaged, faulty (where faults not disclosed) or incorrect items, please send photos of the issue and your order number to email@example.com within 7 days of receiving your order. Items marked Final Sale are unable to be returned.
Please refer to our Returns Policy for further information.
For any other questions, please refer to our FAQs