2pm AEST
Estimated delivery by Mon Nov 9
from 3 verified customers2 sizes / 5 flavours
R1 Casein by Rule 1
Price
$89.95
$0.00
$3.33 per serve 27 servesNutritional info
- 4 payments of $22.48*
- 4 payments of $22.48*
- From $14.99* a week
- Australian owned, Australian stock
- Dispatched from the east and west coast
- No surprise surcharges at checkout
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Add $60.05 and shipping is free
- Free gift when you spend $200
- Free postage on orders over $150
- East & west coast dispatch
- Easy returns within 30 days
Good fit for
- Overnight recovery
- Lean muscle
- Appetite control
Not for
- Dairy allergy or lactose intolerance
- Vegan diets
About this product
- Free standard shippingFREEOrders $150 and over, anywhere in Australia.
- Standard$12.95Orders under $150. Tracked, from the warehouse closest to you.
- Express$19.95Australia Post express network, any order value.
- Express + Skip The Line$29.95Your order is picked and packed ahead of the queue, then sent express.
- Click & collectFREEReady in 4 hours at any of our 58 stores. No minimum.
- Australia Post parcel lockerSAME RATESHave it sent to a 24/7 parcel locker instead of your door and collect whenever suits. Choose a locker address at checkout; standard and express rates apply as above.
- Shipping insurance$1.99Optional freight protection, added in the cart.
- Eco bag$0.99A reusable Supplement Mart bag you can add to your order.
- Heavy RTD levy$20Cartons of ready-to-drink only. The $150 free threshold still applies to the rest of the order.
Orders placed before 2PM AEST on a business day leave the same day. The rates above are what you will see at checkout.
Unopened and unused, send it back within 30 days for a refund or a swap. Change of mind included. Sealed tubs only, for obvious reasons.
Not sure which one is right for you? Ask us in chat, or walk into any of our 58 stores across Australia. Our staff train, so you get an answer rather than a sales pitch.
INSIDE EVERY SERVE
- 25gProtein Per Serve
- 27Serves Per Tub
Serving size 1 scoop (33g)Contains Milk.
NUTRITION & INGREDIENTS
| Per serve | Qty | Per 100serve |
|---|---|---|
| Calories | 120 | - |
| Total Fat | 1g | -g |
| - Saturated Fat | 0.5g | -g |
| - Trans Fat | 0g | -g |
| Cholesterol | 15mg | -mg |
| Sodium | 170mg | -mg |
| Total Carbohydrate | 2g | -g |
| - Dietary Fiber | 0g | -g |
| - Total Sugars | less than 1 g | - |
| - Added Sugars | 0g | -g |
| Protein | 25g | -g |
| Calcium | 630mg | -mg |
| Potassium | 80mg | -mg |
Ingredients
Micellar Casein, Natural and Artificial Flavors, Sunflower Lecithin, Cellulose Gum, Xanthan Gum, Sucralose, salt, Acesulfame Potassium.
Allergens
Contains Milk.
| Per serve | Qty | Per 100serve |
|---|---|---|
| Calories | 120 | - |
| Total Fat | 1g | -g |
| - Saturated Fat | 0.5g | -g |
| - Trans Fat | 0g | -g |
| Cholesterol | 15mg | -mg |
| Sodium | 170mg | -mg |
| Total Carbohydrate | 2g | -g |
| - Dietary Fiber | 0g | -g |
| - Total Sugars | less than 1 g | - |
| - Added Sugars | 0g | -g |
| Protein | 25g | -g |
| Calcium | 630mg | -mg |
| Potassium | 80mg | -mg |
Ingredients
Micellar Casein, Natural and Artificial Flavors, Sunflower Lecithin, Cellulose Gum, Xanthan Gum, Sucralose, salt, Acesulfame Potassium.
Allergens
Contains Milk.
| Per serve | Qty | Per 100serve |
|---|---|---|
| Calories | 120 | - |
| Total Fat | 1g | -g |
| - Saturated Fat | 0.5g | -g |
| - Trans Fat | 0g | -g |
| Cholesterol | 15mg | -mg |
| Sodium | 170mg | -mg |
| Total Carbohydrate | 2g | -g |
| - Dietary Fiber | 0g | -g |
| - Total Sugars | less than 1 g | - |
| - Added Sugars | 0g | -g |
| Protein | 25g | -g |
| Calcium | 630mg | -mg |
| Potassium | 80mg | -mg |
Ingredients
Micellar Casein, Natural and Artificial Flavors, Sunflower Lecithin, Cellulose Gum, Xanthan Gum, Sucralose, salt, Acesulfame Potassium.
Allergens
Contains Milk.
| Per serve | Qty | Per 100serve |
|---|---|---|
| Calories | 120 | - |
| Total Fat | 1g | -g |
| - Saturated Fat | 0.5g | -g |
| - Trans Fat | 0g | -g |
| Cholesterol | 15mg | -mg |
| Sodium | 170mg | -mg |
| Total Carbohydrate | 2g | -g |
| - Dietary Fiber | 0g | -g |
| - Total Sugars | less than 1 g | - |
| - Added Sugars | 0g | -g |
| Protein | 25g | -g |
| Calcium | 630mg | -mg |
| Potassium | 80mg | -mg |
Ingredients
Micellar Casein, Natural and Artificial Flavors, Sunflower Lecithin, Cellulose Gum, Xanthan Gum, Sucralose, salt, Acesulfame Potassium.
Allergens
Contains Milk.
| Per serve | Qty | Per 100serve |
|---|---|---|
| Calories | 120 | - |
| Total Fat | 1g | -g |
| - Saturated Fat | 0.5g | -g |
| - Trans Fat | 0g | -g |
| Cholesterol | 15mg | -mg |
| Sodium | 170mg | -mg |
| Total Carbohydrate | 2g | -g |
| - Dietary Fiber | 0g | -g |
| - Total Sugars | less than 1 g | - |
| - Added Sugars | 0g | -g |
| Protein | 25g | -g |
| Calcium | 630mg | -mg |
| Potassium | 80mg | -mg |
Ingredients
Micellar Casein, Natural and Artificial Flavors, Sunflower Lecithin, Cellulose Gum, Xanthan Gum, Sucralose, salt, Acesulfame Potassium.
Allergens
Contains Milk.
| Per serve | Qty | Per 100serve |
|---|---|---|
| Calories | 120 | - |
| Total Fat | 1g | -g |
| - Saturated Fat | 0.5g | -g |
| - Trans Fat | 0g | -g |
| Cholesterol | 15mg | -mg |
| Sodium | 170mg | -mg |
| Total Carbohydrate | 2g | -g |
| - Dietary Fiber | 0g | -g |
| - Total Sugars | less than 1 g | - |
| - Added Sugars | 0g | -g |
| Protein | 25g | -g |
| Calcium | 630mg | -mg |
| Potassium | 80mg | -mg |
Ingredients
Micellar Casein, Natural and Artificial Flavors, Sunflower Lecithin, Cellulose Gum, Xanthan Gum, Sucralose, salt, Acesulfame Potassium.
Allergens
Contains Milk.
| Per serve | Qty | Per 100serve |
|---|---|---|
| Calories | 120 | - |
| Total Fat | 1g | -g |
| - Saturated Fat | 0.5g | -g |
| - Trans Fat | 0g | -g |
| Cholesterol | 15mg | -mg |
| Sodium | 170mg | -mg |
| Total Carbohydrate | 2g | -g |
| - Dietary Fiber | 0g | -g |
| - Total Sugars | less than 1 g | - |
| - Added Sugars | 0g | -g |
| Protein | 25g | -g |
| Calcium | 630mg | -mg |
| Potassium | 80mg | -mg |
Ingredients
Micellar Casein, Natural and Artificial Flavors, Sunflower Lecithin, Cellulose Gum, Xanthan Gum, Sucralose, salt, Acesulfame Potassium.
Allergens
Contains Milk.
Based on the Vanilla Creme flavour. Other flavours vary slightly.
Disclaimer: Please note, while we try our best to keep up-to-date nutritional information available on the website, packaging and products can change, therefore this information should serve only as a guide. Please refer to actual packaging for latest information.
THE OTHER HALF OF YOUR STACK
If the calories are not there, the training has nothing to work with.
Designed for hard gainers with fast metabolisms
Ideal for hardgainers wanting to increase size
WHY IT WORKS

- A powder, mixes into water
- A choice of 2lb or 4lb
- Great in five flavours
More about R1 Casein
Elevate your performance with the slow-releasing protein powder by Rule1: R1 Casein. If you are after a post-workout formula that will guarantee you stay in an anabolic state all day long, R1 Casein by Rule 1 Proteins is for you! Most people think of whey protein when they think of protein supplements. However, real fitness enthusiasts know about the many benefits casein protein has. R1 Casein by Rule 1 contains 25g of 100% pure slow-digesting casein protein per serving to boost your muscle growth and recovery.
- 25g of slow-digesting casein protein.
- 100% pure casein protein.
- 120 calories per serving.
- 50% of your total daily calcium needs.
While whey protein is digested quickly, casein protein is digested slowly. This makes casein help your cells synthesize protein better during times when your body might normally be breaking down its muscles to fuel itself. R1 Casein by Rule 1 contains all the essential amino acids that your body needs to function properly. Most importantly, this formula provides a high amount of leucine, which boosts muscle protein synthesis. A hit of calcium has been added to help promote strong bone growth and development, as well as iron to help prevent iron deficiency anemia. Simply mix R1 Casein with water, milk or your favourite beverage and enjoy the many benefits casein protein powder has to offer!
Nutritional Information

Directions of Use
- Tasty Shakes: Mix one heaping scoop if R1 Casein with approx. 300ml - 360ml of water, milk or your favourite beverage in a shaker cup or glass with a spoon.
- Smoothies: Add your favourite fruit and ice to the above, mix in blender and enjoy!
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4.3 / 5 from 3 reviews
This protein is so yum, you can make it as a hot chocolate, add it to your oats. It is so versatile and delicious. Perfect for on the go, or at night before bedtime. Even tastes delicious with just water. Yum!
5 Stars
This protein is so yum, you can make it as a hot chocolate, add it to your oats. It is so versatile and delicious. Perfect for on the go, or at night before bedtime. Even tastes delicious with just water. Yum!
Don't Get Chocolate
Chocolate flavor tastes very artificial and strange. Optimum Nutrition chocolate tastes a million times better. I will say the R1 Casein has a good mixability and texture for making casein puddings. The cookies and cream flavor is not bad.
What is R1 Casein?
How do I take R1 Casein?
Who is R1 Casein for?
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