CircO2 Review

CircO2 Review: A Breakthrough Nitric Oxide Booster

Rapidly increases nitric oxide by 200% in just 20 minutes with a fast-dissolving lozenge. Supports energy, stamina, memory, and overall vitality.

  • Clinically tested lozenge delivery
  • Boosts blood flow & oxygen delivery
  • Formulated by Dr. Greg Eckel, ND
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CircO2 Product

How CircO2 Works

Unlike traditional pills and capsules, CircO2 uses a patented lozenge that dissolves in the mouth. This activates special tongue bacteria to convert nitrates directly into nitric oxide, bypassing digestive degradation.

Clinical tests demonstrate a 200% increase in nitric oxide levels and a 34% boost in blood flow within 20 minutes. The result is faster, more efficient absorption for superior results.

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Nitric Oxide Levels Over Time
Nitric Oxide Decline with Age

Why Nitric Oxide Matters

Nitric oxide is a critical molecule for blood vessel dilation, oxygen flow, and brain function. Levels drop dramatically with age, contributing to fatigue, high blood pressure, memory issues, reduced intimacy, and joint discomfort.

CircO2 restores nitric oxide quickly and effectively, helping you feel younger and more vibrant.

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Key Benefits of CircO2

Renewed Energy & Stamina

Feel more energized throughout the day with improved oxygen delivery to muscles and tissues.

Sharper Memory & Clarity

Support brain function and mental focus by enhancing cerebral blood flow.

Healthy Blood Pressure

Promote relaxed blood vessels for better circulation and cardiovascular support.

Joint Mobility & Comfort

Improved blood flow helps nourish joints and reduce everyday stiffness.

Enhanced Intimacy

Better circulation supports sexual performance and responsiveness.

Restful Sleep

Users report more restorative sleep and waking up refreshed.

Science-Backed Ingredients

CircO2 combines clinically studied nutrients in a precise lozenge formula for maximum absorption.

  • Beet Root Powder – Naturally rich in nitrates to boost stamina and power.
  • Hawthorn Berry – Enhances nitric oxide absorption and supports heart health.
  • L-Citrulline – More effective than L-arginine for those over 45; converts to nitric oxide efficiently.
  • Vitamin B12 – Essential for energy production and nerve health.
  • Vitamin C – Acts as a catalyst and protects nitric oxide from oxidative damage.
  • Magnesium – Promotes blood vessel relaxation and muscle recovery.

Formulated by Dr. Greg Eckel, ND

With over 23 years of experience in Integrative and Regenerative Medicine, Dr. Eckel is a respected naturopathic physician, author, and media-featured expert. He designed CircO2 to address the root cause of age-related decline: plummeting nitric oxide levels.

His innovative lozenge delivery system ensures rapid, effective results without harsh stimulants or caffeine.

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CircO2 Packaging

What Customers Are Saying

Sheila K.
Sheila K.
Verified Buyer
Absolutely the BEST nitric oxide supplement

“I’ve tried many nitric oxide supplements. This one is by far the BEST! I love your product and will be taking it forever. It restores blood flow FAST, great for lovemaking.”

Anthony V.
Anthony V.
Verified Buyer
More energy

“I have been using CircO2 for about three years. I take it twice a day and am very happy with the results. I find that I have more energy during the day.”

Roxane M.
Roxane M.
Verified Buyer
CircO2

“I am never without CircO2! It makes me feel balanced without any harsh ingredients. It is an oxygen booster with circulation support. I’m 80 years old and start my day with CircO2!”

Ramiro S.
Ramiro S.
Verified Buyer
Noticeable boost in under 30 minutes

“I’ve been taking CircO2 for about 6 months. I’ve noticed a boost of energy in my workouts and throughout my entire day. I have recommended CircO2 to friends of mine. Thank you for the boost, also the energy boost is noticeable in less than a half hour.”

90-Day Money Back Guarantee

90-Day ‘Down to the Last Lozenge’ Guarantee

Try CircO2 risk-free. If you’re not completely satisfied, return the box — even if it’s empty — within 90 days for a full refund (minus return shipping). That’s how confident Advanced Bionutritionals is in this formula.

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Frequently Asked Questions

Clinical testing shows a 200% increase in nitric oxide levels within 20 minutes of taking the lozenge. Many users report feeling increased energy and mental clarity shortly after.

CircO2 contains no caffeine or harsh stimulants. It is formulated with natural ingredients. However, individuals with low blood pressure or those taking medication should consult a physician before use.

Simply place one lozenge in your mouth and allow it to dissolve completely. The unique delivery system activates nitric oxide production directly in the oral cavity for superior absorption.

Every bottle is backed by a 90-day money-back guarantee. Return the box, even if empty, for a full refund (minus return shipping). No questions asked.

Ready to Boost Your Nitric Oxide?

Experience the 200% nitric oxide increase for yourself with CircO2’s fast-acting lozenges.

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Nitric Oxide Booster – Official Website