Rule 1 Source7 Protein is a high-performance, multi-source protein blend engineered for dedicated athletes and active Kiwis seeking complete, around-the-clock muscle nourishment. Combining seven distinct, high-quality protein sources—ranging from rapid-absorbing whey hydrolysates to slow-release micellar casein—this versatile formula provides a sustained wave of vital amino acids to feed your muscles for hours. Whether you need a post-workout recovery boost, a protein-packed meal replacement, or a nourishing night-cap shake, Rule 1 Source7 Protein delivers rich flavour, smooth mixability, and steady anabolic support.

Key Benefits & Features

• 7-Source Premium Blend: Features Whey Concentrate, Whey Isolate, Hydrolysed Whey, Native Whey, Micellar Casein, Milk Protein Isolate, and Egg White Protein.

• Sustained Amino Acid Release: Delivers a multi-stage digestion profile (fast, medium, and slow) to keep muscle protein synthesis elevated over extended periods.

• Superior Taste & Texture: Yields a remarkably rich, creamy milkshake consistency that satisfies hunger cravings without feeling heavy on the gut.

• Complete EAA & BCAA Profile: Naturally loaded with essential amino acids to accelerate muscle tissue repair, reduce DOMS, and support lean muscle growth.

• Versatile Daily Timing: Perfect as a post-workout recovery shake, between-meal snack, daytime protein booster, or evening muscle-saver.

How It Works

Rule 1 Source7 Protein operates through a staged-release digestive matrix that overcomes the limitations of single-source proteins. Immediately following consumption, fast-acting whey isolate, hydrolysed whey, and native whey absorb rapidly into the bloodstream, triggering an immediate spike in muscle protein synthesis. Medium-digesting milk isolate and egg white protein then take over, maintaining elevated plasma amino acid levels through the mid-recovery phase.

Finally, slow-digesting micellar casein forms a gentle matrix in the stomach, gradually releasing amino acids over several hours. This sustained supply prevents intra-meal catabolism (muscle breakdown), promotes nitrogen retention, and keeps you feeling satiated for longer. By combining these seven complementary proteins, Source7 provides a comprehensive amino acid delivery system suitable for any time of day or night.

Recommended Use

Mix 1 level scoop (approx. 35g) with 250–300ml of cold water, milk, or your favourite plant-based beverage in a Sprint Fit shaker. Shake well for 15–20 seconds until completely smooth. Consume immediately post-workout, between main meals to hit daily protein targets, or before bed for sustained overnight recovery.

Container Size: 
Serving Size: 1 Scoop
Servings Per Container: 

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. 
Contact us if you have any questions regarding this products ingredients.

All orders $60 and over receive Free* Shipping Nationwide 

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

Estimated Delivery Times*:

Auckland and North Island – Overnight

*During sale periods, please allow an additional 1–2 business days for dispatch due to high order volumes.

However many Auckland orders will be delivered the same day depending on what time the order is placed

South Island – Overnight (For larger parcels allow 2 business days)

Same Day/Evening Express Shipping upgrade available at checkout for select suburbs*

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