Estimated delivery by Wed Nov 18 · +48 hrs for Black Friday
from 159 verified customers2 sizes / 4 flavours
High Protein Shake RTD by Optimum Nutrition
Price
$5.20
$6.50
$0.00 per serve 0 serves
- Provides a protein serve
- Supports muscle recovery
- Convenient daily serve
- Mixes easily into any drink
GOES GREAT WITH
-
Gold Standard 100% Whey by Optimum Nutrition
$53.56$66.95Save $13.39 -
Micronized Creatine by Optimum Nutrition
$75.96$94.95Save $18.99 -
Hydration Drink V2 by Dr Hydrate
$39.96$49.95Save $9.99 -
C4 Original by Cellucor
$39.96$49.95Save $9.99 -
Cold Pressed Protein Bar by Fibre Boost
$52.80$66.00Save $13.20 -
Inno Cleanse by Inno Supps
$69.56$86.95Save $17.39 -
OxyShred by EHP Labs
$63.96$79.95Save $15.99 -
R1 Protein Whey Isolate by Rule 1
$87.96$109.95Save $21.99 -
Precision Creatine Monohydrate by Precision Nutrition
$27.96$34.95Save $6.99 -
Free Gift - Mystery Gift
$0.00 -
OxyShred Energy RTD by EHP Labs
$4.00$5.00Save $1.00 -
Nitro Wood by Inno Supps
$67.96$84.95Save $16.99 -
Shipping Insurance
$1.99 -
Night Shred Black by Inno Supps
$91.96$114.95Save $22.99 -
Amino Energy Sparkling RTD by Optimum Nutrition
$3.60$4.50Save $0.90 -
Ultimate Fibre by Qenda
$91.96$114.95Save $22.99
Add $144.80 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
- Intense energy boost
- Everyday hydration
- Laser focus
Not for
- Caffeine sensitivity
- Use close to bedtime
- Under 15
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.
Black Friday volume means orders are taking a little longer to leave us than usual. 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.
THE OTHER HALF OF YOUR STACK
Whatever else is in the stack, protein is the part most people build it around.
For building lean muscle
Suited to strength and power athletes
The cheapest thing you can add to a session.
A 30 serve tub, four flavours
Great for all training levels
WHY IT WORKS
Optimum Nutrition High Protein Shake RTD is a smooth, ready-to-drink protein solution designed to fit busy lifestyles and support daily nutrition goals.

- A ready to drink can
- Great as a single or as a box
- Great in four flavours
More about High Protein Shake RTD
Optimum Nutrition High Protein Shake RTD is a smooth, ready-to-drink protein solution designed to fit busy lifestyles and support daily nutrition goals. Each 375 mL bottle delivers 30 g of high-quality dairy protein with just 4.9 g of fat and no detected gluten. It’s a convenient way to refuel after training or enjoy as a high-protein snack throughout the day, with no mixing or preparation required. Available in indulgent flavours like Chocolate, Vanilla, Strawberry, and Banana, this shake offers both function and flavour without excessive sugar.
- 30 g of protein per serve to support muscle maintenance.
- Low in fat with just 5g per bottle.
- No gluten detected and contains added dietary fibre.
- Convenient on-the-go format – no prep required.
The protein content comes from a blend of milk solids, milk protein concentrate, and sodium caseinate, delivering a complete amino acid profile for muscle recovery and maintenance. With 11.3 g of carbohydrates per serve it provides light energy support without excessive sweetness. The inclusion of inulin, a source of dietary fibre (2.6 g per serve), contributes to digestive health and satiety. Whether you need a post-workout protein boost or a high-protein option to keep you going during the day, Optimum Nutrition High Protein Shake RTD is a practical choice that combines nutrition, convenience, and great taste. Simply chill, shake, and enjoy.
Nutritional Information
(Based on Chocolate flavour)

ALSO BY Optimum Nutrition
-
145Gold Standard 100% Whey by Optimum NutritionWhey Blends5 sizes / 19 flavoursFor building lean muscleHelps meet daily protein needs PriceFrom $53.56$66.95 -
16Serious Mass by Optimum NutritionMass Gainers2 sizes / 4 flavoursDesigned for hard gainers with fast metabolismsMakes it easier to hit high calorie targets PriceFrom $95.16$118.95 -
25Amino Energy Sparkling RTD by Optimum NutritionReady to Drink2 sizes / 8 flavoursGreat for active, on-the-go lifestylesA refreshing way to boost energy and focus PriceFrom $3.60$4.50 -
4Amino Energy + Electrolytes by Optimum NutritionBCAAs5 flavours availableA powder, mixes into waterA single 30 Serves size Price$39.96$49.95 -
17Amino Energy by Optimum NutritionBCAAs2 sizes / 12 flavoursFor energy and recoveryHelps provide aminos acids and natural energy PriceFrom $39.96$49.95 -
12Gold Standard 100% Isolate by Optimum NutritionWhey Isolate3 sizes / 6 flavoursSuited to strict macro trackersA clean way to refuel post-workout PriceFrom $102.36$127.95 -
16Micronized Creatine by Optimum NutritionCreatine3 sizes availableSuited to strength and power athletesHelps you push through tough sessions PriceFrom $27.96$34.95 -
3Gold Standard 100% Casein by Optimum NutritionCasein2 sizes / 2 flavoursBest for nighttime muscle supportHelps fuel muscles during sleep PriceFrom $81.56$101.95 -
8Pure Pro 35 Protein RTD by Optimum NutritionReady to Drink2 sizes / 4 flavoursA ready to drink canGreat as a single or as a box PriceFrom $5.56$6.95 -
1BCAA Boost by Optimum NutritionBCAAs3 flavours availableA 30 serve tub, three flavoursPerfect stirred into a water bottle Price$47.56$59.45 -
Gold Standard Pro Gainer by Optimum NutritionMass Gainers2 sizes / 2 flavoursIdeal for athletes needing extra caloriesHelps you hit your daily surplus targets PriceFrom $147.96$184.95 -
2Pure Pro 50 Protein RTD by Optimum NutritionReady to Drink2 sizes / 3 flavoursPerfect for busy athletes on the goAn easy way to hit daily protein targets PriceFrom $6.80$8.50
4.7 / 5 from 159 reviews
Out of Melbourne in a day
Ordered Monday night, on the doorstep Wednesday morning. Packed properly too, lid taped and no powder loose in the box.
Does the job
No complaints on how it works, I just wish the scoop sat in the lid instead of buried at the bottom.
Staff know their stuff
Rang before ordering because I work nights and had no idea what to take when. Got a straight answer and the cheaper option, which is not what I expected.
Cheapest I found
Checked four other sites first. Same size, twenty dollars less, and it still shipped the same day.
What is High Protein Shake RTD?
Who is High Protein Shake RTD for?
JOIN OUR REWARDS PROGRAM
Our rewards program gives you access to exclusive discounts, an awesome birthday voucher, access to VIP sales, and of course you earn points for every dollar you spend.
- Exclusive discounts
- Birthday voucher
- Early VIP sales
- 1 point per $1
- Better free shipping
- 50 points to join
- Earn in store too
- Redeem at checkout
You start with 50 points just for joining. Points expire 12 months after they are earned, and birthday vouchers are valid 30 days on a $50 minimum spend.