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Rule 1

Sale
RULE 1 WHEY PROTEIN
RULE 1
WHEY PROTEIN
1LB
$49.95 $39.96
20% OFF TOP BRANDS ON NOW!
Sale
RULE 1 WHEY PROTEIN
RULE 1
WHEY PROTEIN
2LB
$84.95 $67.96
20% OFF TOP BRANDS ON NOW!
Bonus Gift
RULE 1 WHEY PROTEIN
RULE 1
WHEY PROTEIN
5LB
$179.95 $143.96
20% OFF TOP BRANDS ON NOW!
Bonus Gift
RULE 1 WHEY PROTEIN
RULE 1
WHEY PROTEIN
10LB
$319.95 $255.96
20% OFF TOP BRANDS ON NOW!
Sale
RULE 1 R1 ISOLATE PROTEIN
RULE 1
R1 ISOLATE PROTEIN
1LB
$69.95 $55.96
20% OFF TOP BRANDS ON NOW!
Sale
RULE 1 R1 ISOLATE PROTEIN
RULE 1
R1 ISOLATE PROTEIN
2LB
$124.95 $99.96
20% OFF TOP BRANDS ON NOW!
Bonus Gift
RULE 1 R1 ISOLATE PROTEIN
RULE 1
R1 ISOLATE PROTEIN
5LB
$259.95 $207.96
20% OFF TOP BRANDS ON NOW!
Sale
RULE 1 CREATINE MONOHYDRATE
RULE 1
CREATINE MONOHYDRATE
30 SERVES
$39.95 $31.96
20% OFF TOP BRANDS ON NOW!
Sale
RULE 1 CREATINE MONOHYDRATE
RULE 1
CREATINE MONOHYDRATE
75 SERVES
$59.95 $47.96
20% OFF TOP BRANDS ON NOW!
Sale
RULE 1 CREATINE MONOHYDRATE
RULE 1
CREATINE MONOHYDRATE
130 SERVES
$99.95 $79.96
20% OFF TOP BRANDS ON NOW!
Sale
RULE 1 BCAA
RULE 1
BCAA
30 SERVES
$39.95 $31.96
20% OFF TOP BRANDS ON NOW!
Sale
RULE 1 BCAA
RULE 1
BCAA
60 SERVES
$69.95 $55.96
20% OFF TOP BRANDS ON NOW!
Sale
RULE 1 BURN POWDER
RULE 1
BURN POWDER
30 SERVES
$69.95 $55.96
20% OFF TOP BRANDS ON NOW!
Sale
RULE 1 ACTIVE BCAA
RULE 1
ACTIVE BCAA
30 SERVES
$59.95 $47.96
20% OFF TOP BRANDS ON NOW!
Sale
RULE 1 CITRULLINE
RULE 1
CITRULLINE
60 SERVES
$59.95 $47.96
20% OFF TOP BRANDS ON NOW!
Sale
RULE 1 LYTES
RULE 1
LYTES
40 SERVES
$39.95 $31.96
20% OFF TOP BRANDS ON NOW!
Sale
RULE 1 CHARGED CREATINE
RULE 1
CHARGED CREATINE
30 SERVES
$59.95 $47.96
20% OFF TOP BRANDS ON NOW!
Sale
RULE 1 ENERGIZED COGNITION
RULE 1
ENERGIZED COGNITION
30 SERVES
$74.95 $59.96
20% OFF TOP BRANDS ON NOW!
Sale
RULE 1 ENERGIZED AMINOS
RULE 1
ENERGIZED AMINOS
30 SERVES
$39.95 $31.96
20% OFF TOP BRANDS ON NOW!
Sale
RULE 1 ESSENTIAL AMINO 9
RULE 1
ESSENTIAL AMINO 9
30 SERVES
$59.95 $47.96
20% OFF TOP BRANDS ON NOW!
Sale
RULE 1 GLUTAMINE
RULE 1
GLUTAMINE
75 SERVES
$44.95 $35.96
20% OFF TOP BRANDS ON NOW!
Sale
RULE 1 GLUTAMINE
RULE 1
GLUTAMINE
130 SERVES
$79.95 $63.96
20% OFF TOP BRANDS ON NOW!
Sale
RULE 1 CLEAN GAINER
RULE 1
CLEAN GAINER
15 SERVES
$109.95 $87.96
20% OFF TOP BRANDS ON NOW!
Sale
RULE 1 CLEAN GAINER
RULE 1
CLEAN GAINER
30 SERVES
$189.95 $151.96
20% OFF TOP BRANDS ON NOW!
Sale
RULE 1 PUMP
RULE 1
PUMP
30 SERVES
$74.95 $59.96
20% OFF TOP BRANDS ON NOW!
Sale
RULE 1 PRELIFT
RULE 1
PRELIFT
30 SERVES
$79.95 $63.96
20% OFF TOP BRANDS ON NOW!
Sale
RULE 1 BAR 1 CRUNCH BARS
RULE 1
BAR 1 CRUNCH BARS
BOX 12X 60G
$54.90 $43.92
20% OFF TOP BRANDS ON NOW!
Sale
RULE 1 SOURCE7 PROTEIN
RULE 1
SOURCE7 PROTEIN
2LB
$59.95 $47.96
20% OFF TOP BRANDS ON NOW!
Sale
RULE 1 SOURCE7 PROTEIN
RULE 1
SOURCE7 PROTEIN
4LB
$119.95 $95.96
20% OFF TOP BRANDS ON NOW!
Sale
RULE 1 ROAR PRE WORKOUT
RULE 1
ROAR PRE WORKOUT
30 SERVES
$39.95 $31.96
20% OFF TOP BRANDS ON NOW!
Sale
RULE 1 CASEIN
RULE 1
CASEIN
2LB
$84.95 $67.96
20% OFF TOP BRANDS ON NOW!
Sale
RULE 1 CASEIN
RULE 1
CASEIN
4LB
$139.95 $111.96
20% OFF TOP BRANDS ON NOW!
Out Of Stock
RULE 1 MASS GAINER
RULE 1
MASS GAINER
6LB
$79.95 $63.96
20% OFF TOP BRANDS ON NOW!
Out Of Stock
RULE 1 MASS GAINER
RULE 1
MASS GAINER
12LB
$149.95 $119.96
20% OFF TOP BRANDS ON NOW!
Out Of Stock
RULE 1 LEAN 5
RULE 1
LEAN 5
60 SERVES
$64.00 $51.20
20% OFF TOP BRANDS ON NOW!

Rule 1 at Sprint Fit

Made by the original founders of Optimum Nutrition, Rule 1 is a no-nonsense sports nutrition brand focused on quality, purity, and performance. Their industry-leading proteins are trusted by athletes worldwide — with zero banned substances and no unnecessary fillers. Sprint Fit is proud to stock Rule 1 right here in New Zealand, through the country’s number one specialist online sports
nutrition store.


Sprint Fit Favourites from Rule 1

  • R1 Whey Blend – A high-quality whey protein blend including concentrate, isolate, and hydrolysate. Great for recovery, lean muscle, and everyday use.
  • R1 Protein (Whey Isolate) – Ultra-clean, fast-absorbing whey isolate with almost zero fat, lactose, or sugar. Ideal for cutting, clean bulking, or lactose-sensitive users.

Why We Love Rule 1 at Sprint Fit

Rule 1 keeps it clean, simple, and effective. Their proteins are micro-filtered, banned-substance tested, and great-tasting — with full label transparency. Whether you're building lean muscle or watching your macros, Rule 1 delivers. 

Rule 1 FAQs
What’s the difference between R1 Whey Blend and R1 Protein Isolate?

R1 Whey Blend contains a mix of whey concentrate, isolate, and hydrolysate — more affordable with a creamy texture. R1 Protein Isolate is ultra-pure, with minimal carbs, fats, or lactose. 

When should I take Rule 1 Protein?

It’s ideal post-workout for muscle recovery, or between meals to boost protein intake. Isolate is especially good after training or during lean phases.

Is Rule 1 good for lactose-sensitive users?

Yes — R1 Protein Isolate is very low in lactose and often well-tolerated by those with mild sensitivities.

Are Rule 1 supplements banned substance tested?

Yes — Rule 1 proteins are Informed Choice certified and rigorously tested to be free of banned substances.

Can I stack Rule 1 with other supplements?

Definitely. Pair it with creatine, BCAAs, or pre-workout depending on your goals. It fits easily into any training stack.