Product Description
Looking for an all-day protein solution? Rule 1 Source7 Protein delivers 22g of protein per serve from seven high-quality sources, including whey isolate, concentrate, casein, milk isolate, egg, and hydrolysed whey. This unique multi-stage blend provides fast, medium, and slow-digesting proteins to fuel muscle growth, recovery, and satiety anytime of day.
Why Choose Rule 1 Source7 Protein?
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22g protein per serve – supports lean muscle and recovery.
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7 protein sources – complete blend for sustained amino release.
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All-day formula – ideal for post-workout, meals, or before bed.
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Delicious flavour range – smooth and satisfying shakes.
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Low sugar and low fat – lean-friendly profile.
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Mixes easily – no clumps or chalky taste.
How to Use
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Mix 1 scoop of Source7 Protein with 200–300ml cold water or milk.
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Shake or stir until smooth.
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Use post-workout, as a meal replacement, or before bed.
Pro tip: Use Source7 in oats, baking, or smoothies for extra protein throughout the day.
Who’s It For?
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Gym-goers wanting protein support all day long.
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Athletes needing fast and slow-digesting protein in one formula.
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Anyone who struggles with cravings between meals.
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People looking for a versatile protein for shakes and recipes.
FAQ
What makes Source7 different from R1 Protein or Whey Blend?
Source7 combines seven different proteins for sustained release, while R1 Protein is pure isolate and Whey Blend is focused on three whey sources.
Can I use it as a meal replacement?
Yes — with its blend of proteins and satisfying texture, it works well as a meal substitute.
Is it good for overnight recovery?
Yes — the casein and slower proteins provide amino acids for hours.
Why Buy from Sprint Fit?
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100% authentic Rule 1 supplements.
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Free NZ shipping on orders $60+.
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Same-day dispatch nationwide.
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Trusted by Kiwi athletes and fitness enthusiasts.
Rule 1 Source7 Protein – seven premium proteins for all-day recovery and growth.
Facts
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.
Shipping
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
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.
Rule 1 Source7 Protein Reviews

Vanilla
Salted Caramel
Chocolate
Cookies & CreamGreat taste and mixability. I preferred the vanilla. it’s the best protein I’ve ever tried. I even made protein ice cream with it in the Ninja. It was perfect.

PistachioPistachio flavour is my favourite protein powder of all time. Have tried many and this is the best tasting by far.

PistachioLove the pistachio flavour taste more like an adult protein shake been using the basic chocolate and vanilla for the last couple of years doesn't cut it anymore