Enjoy free shipping for purchases over $150

Premium Supplements in Canada
Build Strength. Build Confidence. Build the Kingdom.

Premium Supplements in Canada
Build Strength. Build Confidence. Build the Kingdom.

Your cart

Your cart is empty

Continue shopping
Join The

KINGDOM CLUB

Sign up and get 10% off every purchase, everyday

By completing this form, you are signing up to receive our emails and can unsubscribe at any time

Peak-O2
Peak-O2

Peak-O2

$42.21

Join the Kingdom club and save 10% off this price everyday*

*Certain restrictions may apply

 
Shipping calculated at checkout.

Join the Kingdom Club and save 10% off this price everyday

Free Shipping on orders over 150$

Need help? Contact us

Secure payment

    • Product Information

      Peak O2 is a performance-enhancing adaptogenic blend designed to optimize oxygen utilization and endurance capacity. This 60-serving formula combines a proprietary mushroom complex with clinically researched ingredients to support aerobic performance, stamina, and recovery. Ideal for athletes and active individuals seeking natural support for cardiovascular efficiency and sustained energy during intense training or competition.

    Product Information

    Peak O2 is a performance-enhancing adaptogenic blend designed to optimize oxygen utilization and endurance capacity. This 60-serving formula combines a proprietary mushroom complex with clinically researched ingredients to support aerobic performance, stamina, and recovery. Ideal for athletes and active individuals seeking natural support for cardiovascular efficiency and sustained energy during intense training or competition.

    Join the Club
    Save 10% on all purchases everyday

    Blog posts

    At the Kingdom, we prioritize knowledge. We believe informed customers make better choices. That's why we share detailed product specs, ingredient breakdowns, and science-backed guidance with every purchase. Your fitness journey deserves clarity and expertise.

    View all posts
    Most People Are Doing Fat Loss Wrong. What Actually Works (Backed by Science)

    Most People Are Doing Fat Loss Wrong. What Actually Works (Backed by Science)

    Struggling to lose fat? This evidence-based guide explains the most common fat loss mistakes and outlines proven strategies—including nutrition, training, hydration, and supplementation—to help you get results.

    Read more
    Brett Rehman’s Pro Picks. My go to supplements for maximum results

    Brett Rehman’s Pro Picks. My go to supplements for maximum results

    IFBB Pro Brett Rehman, owner and founder of Kingdom Supplements, shares his personal supplement recommendations built over 15 years of training. Learn the foundation supplements he trusts most—creatine, protein, pre-workout,...

    Read more
    Creatine - "To load, or not to load, that is the question"
    • creatine

    Creatine - "To load, or not to load, that is the question"

    Creatine is one of the most researched and trusted supplements for strength, performance, and muscle growth. But should you load creatine or take it daily? In this science-backed guide, we...

    Read more
    Protein powders explained, What the heck am I really buying?
    • Protein

    Protein powders explained, What the heck am I really buying?

    Protein is one of the most important nutrients for building muscle, supporting metabolism, and maintaining overall health. But how much protein do you actually need each day? In this complete...

    Read more
    Menopause Supplements: How to Support Hormones, Preserve Muscle, and Protect Bone Health

    Menopause Supplements: How to Support Hormones, Preserve Muscle, and Protect Bone Health

    Menopause brings natural hormonal changes that can affect muscle mass, metabolism, bone density, and energy levels. This guide explains the supplements, nutrition strategies, and lifestyle habits that can help women...

    Read more
    Best Supplements for Muscle Growth (Science Explained)
    • creatine
    • Protein

    Best Supplements for Muscle Growth (Science Explained)

    What supplements actually help build muscle? In this science-based guide, we break down the most effective supplements for muscle growth including creatine, protein, citrulline, and beta-alanine, and explain how they...

    Read more
    Pre-Workout Explained: Ingredients That Actually Work
    • Pre-Workout

    Pre-Workout Explained: Ingredients That Actually Work

    Pre-workout supplements are designed to boost energy, focus, endurance, and performance during training—but not all formulas are created equal. In this science-based guide, we break down the pre-workout ingredients that...

    Read more
    How to Lose Fat With Cardio While Preserving Muscle

    How to Lose Fat With Cardio While Preserving Muscle

    Cardio can be a powerful tool for fat loss, but doing it incorrectly can lead to muscle loss and a slower metabolism. In this guide, we break down the best...

    Read more
    Creatine vs Pre-Workout: Which Supplement Is Better for Performance?

    Creatine vs Pre-Workout: Which Supplement Is Better for Performance?

    Should you take creatine or pre-workout for better performance? While both supplements are popular among athletes, they work in very different ways. This science-based guide explains the benefits of creatine...

    Read more

    "I'm located in Calgary and only buy my supplements from Brett at Kingdom. Not only do they have everything you need but it’s a awesome experience every time I step in the door. Always friendly, and beyond helpful"

    – Denis Tyson

    "So knowledgeable and helpful. Super friendly and welcoming - sometimes shops like this can be overwhelming but was totally at ease from minute stepped in"

    – Mandy Kellock

    "Best Supplement shop in Cochrane, Alberta by far"

    – Steve Jordans

    "Brett knows his stuff. Whether you are new to supplements, changing your lifestyle and looking for advice or wanting to try something different this is the place for you! Extremely fair prices, great advice and amazing selection! Highly recommend"

    – Leeza Darion

    Featured collection

    Believe

    Performance EAAs

    Performance EAAs

    from $49.95

    Superfoods+ Greens

    Superfoods+ Greens

    from $49.99

    Pump Addict MAX Pre-Workout

    Pump Addict MAX Pre-Workout

    $66.66

    Believe Protein Refresher

    Believe Protein Refresher

    $77.77

    Limitless Pharma

    The #1 Selling Protein

    Get It Here

    limitless pharma

    Canadian made

    The only limit is you

    blow

    The Pre-Workout, Pre-workouts talk about...

    KINGDOM CUTS

    Clothing made with you in mind

    shop