RAW Nutrition Peak O2 Endurance Powder 30 Servings - PEAKO2® | Svpplements

Raw Nutrition

Raw Nutrition | Peak O2 | 30 Servings

Stim-free mushroom endurance support for longer, stronger training sessions.

$18.95 $19.95$0.63/serving
0

SuppVault Score

Average — known limitations

Raw Nutrition | Peak O2 | 30 Servings

Six dimensions, weighted by category. Each is scored 0–10 from the supplement-facts panel data and the 2,607-ingredient knowledge base.

  • Clinical Dosing 5/10
  • Label Transparency 5/10
  • Manufacturing 4/10
  • Testing 3/10
  • Inactive Ingredients 9/10
  • Value 8/10
See the full algorithm → Read methodology

Scores are deterministic — same label in, same score out. Proprietary blends naturally score lower on transparency by design, not as a penalty.

Score reflects incomplete data — label not yet scanned. Not a quality judgment.

100 Day Guarantee Opened OK · Full refund
Free Shipping Orders over $39
✓ Hand Packed Climate-controlled

Get Notified When Back in Stock

We'll email you once when this product is restocked. No spam.

Shop Similar Products

NutraBio Peak O2 Endurance Supplement Powder 60 Servings - PeakO2™ 2,000mg | Svpplements93NutraBio NutraBio | Peak O2 | 60 Servings $29.99 Raw Beta-Alanine Endurance Powder 60 Servings - Beta-Alanine 3.2g | Svpplements81Raw Nutrition Raw Nutrition | Beta Alanine | 60 Servings $27.95 Raw Fuel 1 Endurance Fuel Powder 60 Servings - Carbohydrate Blend 24-25g | Svpplements67Raw Nutrition Raw Nutrition | Fuel Endurance | 60 Servings $39.99 Raw Pump Stim-Free Pump Formula Powder 40 Servings - L-Citrulline 2.5g | Svpplements74Raw Nutrition Raw Nutrition | Pump | 40 Servings $34.95 Hi-Tech Pharmaceuticals Muscle Support Tablets 90 Servings - 90 tablets per bottle | Svpplements70Hi-Tech Pharmaceuti... Hi-Tech Pharmaceuticals | Winstrol 90ct | 90 ... $59.95 Bucked Up Pre-Workout Powder 30 Servings - Citrulline Malate 6000mg | Svpplements90Bucked Up Bucked Up | Pre Workout | 30 Servings $42.95
Browse all ARNOLD SALE
Currently out of stock Restock notifications coming soon
unknown PEAKO2®
unknown Cordyceps Militaris
unknown Lion’s Mane
unknown Reishi, Shiitake, King Trumpet, Turkey Tail
✓ Label Verified✓ DSHEA Compliant
PEAKO2® blend — endurance-focused mushroom complex
Six mushrooms — broad functional profile
Stim-free formula — no caffeine rush
Supports oxygen use and fatigue resistance
Made for endurance and repeat effort
Easy stack with stimulant pre-workouts
Product Intelligence
⚠️ Contains proprietary blend (7 ingredients)
1. Cordyceps militaris2. Reishi (Ganoderma lucidum)3. King Trumpet (Pleurotus eryngii)4. Shiitake (Lentinula edodes)5. Lion's Mane (Hericium erinaceus)6. Turkey Tail (Trametes versicolor)7. organic oats
SuppVault Summary

Stim-free endurance support built around PEAKO2®, a patented six-mushroom blend. It’s positioned to support oxygen utilization, exercise output, and fatigue resistance for demanding training. Full label dosing was not independently verified.

Great Fit

  • Bodybuilders in high-volume training blocks
  • HIIT and CrossFit-style athletes
  • Runners, cyclists, and hybrid athletes
  • Late-day trainees avoiding caffeine
  • Athletes stacking with existing pre-workouts
  • Stimulant-sensitive performance-focused users
  • Lifters in conditioning phases
  • Wellness-focused users wanting functional mushroom support

Not Ideal If

  • Pregnant or nursing individuals without medical clearance
  • Anyone under 18 without medical guidance
  • People with mushroom allergies or sensitivities
  • Those with autoimmune or immunocompromised conditions should consult a clinician
  • Anyone taking medications affecting immune function should ask a healthcare p...
⚠️ Allergen Information +
Contains:
MilkSoyEggsWheatTree NutsPeanutsFishShellfish
Manufactured in a facility that also processes:
MilkSoyEggsWheatTree NutsPeanutsFishShellfish

Brand-Published Lab Tests

Raw Nutrition publishes test results from independent third-party labs. Svpplements links to the manufacturer’s data — we don’t test products ourselves.

How we evaluate testing
Lab data is published by the manufacturer. Svpplements neither verifies nor warrants third-party test results — we curate the link so you can check the source. How we evaluate testing →
Buy more, save more

Stack discount

Discount applied automatically in cart.

  • Ships Monday
Have a question about this product?
Timing & Effects
When Pre workout
Time Any time
What You'll Feel
⏱
First few uses
Subtle support, not a dramatic energy surge
⚡
Workout start
Training may feel smoother and more even
🎯
During conditioning
May help reduce early-session burnout
⏱
1-2 weeks
Some notice better pacing and repeat effort
⏱
Full training block
Value shows in work capacity and less fade
Formula Deep Dive

Deep Dive

Core endurance-support ingredient 1
Pe
PEAKO2®
unknown
Performance-support mushroom 1
Co
Cordyceps Militaris
unknown
Adaptogenic mushroom 1
Re
Reishi
unknown
Functional mushroom component 4
Ki
King Trumpet
unknown
Sh
Shiitake
unknown
Li
Lion’s Mane
unknown
Tu
Turkey Tail
unknown
Core endurance-support ingredient: 1Performance-support mushroom: 1Adaptogenic mushroom: 1Functional mushroom component: 4
Clinical Dosing

Clinical Dosing

PEAKO2®
Under-researched No clinical-dose range yet — manufacturer dose only.
unknown
Cordyceps Militaris
Under-researched No clinical-dose range yet — manufacturer dose only.
unknown
Lion’s Mane
Under-researched No clinical-dose range yet — manufacturer dose only.
unknown
Reishi, Shiitake, King Trumpet, Turkey Tail
Under-researched No clinical-dose range yet — manufacturer dose only.
unknown

Frequently bought together

Comparison

How this stacks up

Side-by-side against the closest competitors. Score reflects clinical dosing, transparency, and testing.

Comparison data combines live storefront pricing with our SuppVault analysis. Competitor scores reflect public-label data; manufacturer-side changes may not be reflected in real time.

More Information
Full Product Description Article

Raw Nutrition Peak O2 appears to be a stim-free endurance support product centered around PEAKO2®, a patented blend of six organic-certified mushrooms. Across brand and retailer references, the six mushrooms consistently reported are cordyceps militaris, reishi, king trumpet, shiitake, lion’s mane, and turkey tail. The formula is positioned around oxygen utilization, endurance support, exercise performance, and reduced fatigue during demanding training. Note: Full supplement facts panel not available for independent dose verification.

What gives this product credibility is not a long ingredient list, but the use of a recognizable branded ingredient with published sports nutrition discussion around it. Research and ingredient-review sources commonly describe PEAKO2® as being studied for benefits related to VO2 max, time-to-exhaustion, peak power output, and lactate handling. Some sources report that clinical work on PEAKO2® has used around 2 grams daily, but because the complete Raw Nutrition label was not independently verified, that dose should be treated as reported rather than confirmed. Even so, the category fit is clear: this is not a traditional pre-workout meant to feel intense, but a daily or pre-training performance aid intended to support aerobic efficiency and repeat effort capacity over time.

From a consumer positioning standpoint, Peak O2 makes sense for athletes who do intervals, circuits, team sport conditioning, high-volume bodybuilding sessions, or endurance work and want something non-stimulating. It likely appeals to people who already trust Raw Nutrition’s athlete-driven image and prefer straightforward, performance-led products instead of kitchen-sink formulas. The user experience here is generally expected to be subtle rather than dramatic: not a surge of energy, but improved breathing comfort, steadier output, and less “redlining” as training volume accumulates.

Because independent label verification is incomplete, this product should be described conservatively. Still, based on available web research, Raw Nutrition Peak O2 is best understood as a stimulant-free mushroom-based endurance supplement built around a well-known branded ingredient rather than a hype-heavy pre-workout experience.

Science & Clinical References 9 citations
PEAKO2® and Oxygen Utilization3 studies

PEAKO2® is positioned as a functional mushroom blend used in sports nutrition to support aerobic efficiency and fatigue management. Proposed mechanisms include improved oxygen kinetics, mitochondrial support, and enhanced resilience to repeated exercise stress. Rather than acting like a stimulant, its value is typically framed around cumulative performance effects with consistent use. This makes it more relevant to work capacity and time-to-exhaustion than acute perceived energy.

Cordyceps and Exercise Capacity2 studies

Cordyceps militaris is commonly discussed for its potential role in aerobic performance and exercise tolerance. Mechanistically, interest centers on cellular energy production, oxygen handling, and metabolic efficiency during prolonged or repeated effort. The ingredient is often included in endurance formulas because it may support output without relying on central nervous system stimulation. Effects are generally expected to be subtle and training-context dependent.

Functional Mushrooms and Fatigue Resistance2 studies

Multi-mushroom blends may provide complementary bioactives that influence stress adaptation, immune signaling, and recovery from exercise load. In an athletic setting, this can translate into better tolerance for demanding sessions rather than a dramatic acute sensation. The six-mushroom profile in PEAKO2® is often marketed as broader than cordyceps alone because it combines performance-oriented and wellness-oriented species. This supports the product’s use as a daily endurance adjunct.

Stim-Free Endurance Support2 studies

Stim-free endurance formulas aim to improve performance without caffeine-driven arousal. That changes the user experience: less immediate intensity, but potentially better compatibility with late-day training, stacked pre-workouts, and stimulant-sensitive athletes. Mechanistically, these products focus more on fatigue resistance, substrate use, hydration, or oxygen utilization than on neurotransmitter stimulation. For that reason, benefits are often more apparent over repeated sessions than in a single workout.

Product Details Specs
Product Type Supplement
Category stim-free endurance support
Brand Raw Nutrition
Form Powder
Dietary stim-free
How to Take — Training Protocol3 phases

How to Use Raw Nutrition | Peak O2

Before first use
Check Label
Follow the manufacturer directions on the physical packaging once in hand.
Every day
Daily Foundation
Use consistently, as endurance-support ingredients are commonly taken daily for best results.
Pre-workout
Training Day Timing
Take before training if the label indicates pre-workout use.
Warnings
● Avoid if you have a mushroom allergy or sensitivity.
● Consult a clinician before use if you have autoimmune or immunocompromised conditions.
● Pregnant or nursing individuals should only use with medical clearance.
● Because full supplement facts were not independently verified, confirm serving directions on the package.
Quick Answers

Quick Answers

What is Raw Nutrition Peak O2?
It appears to be a stimulant-free endurance supplement built around PEAKO2®, a branded blend of six mushrooms commonly used in sports nutrition discussions for oxygen utilization and exercise performance support.

Does Peak O2 contain caffeine?
Based on available research, this product is positioned as stim-free. That means it is intended to support performance without the typical caffeine-style energy rush.

What does it feel like?
Most users should expect a subtle performance effect rather than a dramatic sensation. This category is more about steadier endurance, better work capacity, and less falloff during hard sessions.

Who is Peak O2 best for?
It is best for athletes doing high-volume lifting, conditioning, HIIT, running, cycling, or mixed-modal training who want endurance support without stimulants.

Can I stack it with my pre-workout?
Usually yes, because it serves a different role from a typical stimulant pre-workout. Always check the final label once received, since the full supplement facts panel was not independently verified.

How long does Peak O2 take to work?
This type of product is usually better judged over days to weeks of consistent use rather than a single workout. The expected benefit is cumulative training support, not a one-time buzz.

Is the formula fully verified?
No. Full supplement facts panel not available for independent dose verification. Product descriptions consistently reference PEAKO2® and its six mushrooms, but complete label details were not independently confirmed.

What mushrooms are reported in Peak O2?
Available sources consistently report cordyceps militaris, reishi, king trumpet, shiitake, lion’s mane, and turkey tail as the mushroom components of PEAKO2®.
67

SuppVault Score

Raw Nutrition | Peak O2 | 30 Servings

💊 Clinical Dosing 5/10

No key actives identified

🏷 Label Transparency 5/10

No ingredient data

🏭 Manufacturing 4/10

No manufacturing certifications found

🔬 Testing 3/10

No third-party certification found

🧪 Inactive Ingredients 9/10

Minimal inactive ingredients

💰 Value 8/10

$0.63/serving — below $1.00 category median

Scores are relative to category averages. Proprietary blends score lower on transparency naturally — this is neutral fact, not penalty.

Athlete status

Verified athletes can view NCAA, WADA, and high-school compliance status for this product.

Log in to see compliance or create an account

* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Consult your physician before use if you have a medical condition or take medications.

Need 1-on-1 expert advice?

Drop your number and our team will instantly text you.

connected

Our team is on it. Check your texts — real advice, real fast.

Related Products

More from Raw Nutrition

Shop all Raw Nutrition →

More in ARNOLD SALE

Shop all ARNOLD SALE →
Premium tier

Next-tier upgrade

Higher-scoring formulas the brain ranks above this product.

Recently Viewed

Raw Nutrition | Peak O2 | 30 Servings $18.95
100-Day Guarantee Free Returns Authentic Stock
Raw Nutrition | Peak O2 | 30 Servings
100-Day Guarantee Free Returns Authentic Stock
$18.95