Muscle Nation Sour Protein Water is a refreshing, protein-infused hydration drink designed to deliver quality whey protein in a crisp, thirst-quenching format. Perfect for post-workout recovery, daily hydration, or anytime you want a protein boost without the heaviness of a shake, this sour-flavoured protein water supports muscle repair and daily protein goals.

Why Choose Muscle Nation Sour Protein Water?

High-Quality Protein – Delivers a clean dose of whey protein to help support muscle repair and recovery.
Light & Refreshing – Crisp sour flavour and hydrating format make it ideal when you want protein without thickness.
Zero or Low Sugar – Designed to deliver protein with minimal sugar, supporting lean goals and everyday use.
Convenient On-the-Go – Ready-to-drink bottle — perfect for gym bags, work, training and travel.
Supports Daily Protein Intake – Great addition to meals or snacks to help you hit your protein targets.

How to Use

Step 1: Shake well and enjoy one bottle after training, between meals, or anytime you need a protein boost.
Step 2: Keep chilled for optimal refreshment and taste.
Step 3: Use as part of your daily protein strategy to support recovery and muscle maintenance.

Pro Tip: Drink after cardio or gym sessions for a light, hydrating protein refresh that doesn’t weigh you down.

Who’s It For?

Gym-Goers & Strength Athletes – Supporting recovery and protein needs without heavy shakes.
Active Individuals & Everyday Users – Great for busy schedules where quick, convenient protein is needed.
People Who Don’t Like Thick Shakes – Ideal alternative to traditional protein drinks.
Hydration & Nutrition Focused Users – Combines hydration with muscle support in one drink.

FAQ

Is this a meal replacement?
No — it’s designed as a protein boost and hydration support, not a full meal substitute.

Is it suitable for after workouts?
Yes — it supports muscle repair and recovery when consumed post-training.

Does it contain a lot of sugar?
It’s formulated with minimal or zero sugar, making it suitable for lean or low-sugar nutrition plans.

Why Buy from Sprint Fit?

100% authentic supplements.
Free NZ shipping on orders $60+.
Same-day dispatch nationwide.
Trusted by Kiwi athletes and fitness enthusiasts.

Muscle Nation Sour Protein Water — your refreshing protein-infused hydration drink in NZ, crafted to deliver muscle support, hydration and great taste.

We use NZ Couriers as our courier service using an international service. NZ Couriers provides our customers with fast and reliable delivery to destinations across their comprehensive AUS network. 

Standard orders over $60.00 receive free* shipping nationwide, excluding WA, NT, TAS.
Standard delivery starts from $12.90 per shipment for orders under $60.00 
Signature Required $14.90 per shipment. Please ensure you do not have the 'authority to leave' authorization set up at your address with NZ Couriers should you wish to use this service.
If you don't want NZ Couriers to leave your parcel unattended, please select the signature required option. This is especially recommended for high value orders. Neither NZ Couriers nor Sprint Fit are liable for parcels that are stolen, damaged or lost after an item has been delivered.

Final pick up each day is at 3.45pm Monday to Friday. 

*Excludes public holidays and weekends as courier is closed

Click here to view the full Shipping Details and Returns Policy.