CircO2 Review: The MIT-Inspired Lozenges That Boost Nitric Oxide 200% in 20 Minutes
What Is CircO2?
CircO2 is an advanced nitric oxide supplement from Advanced Bionutritionals, created by Dr. Greg Eckel, a Naturopathic Physician with over 23 years of experience. Unlike typical pills or capsules, CircO2 comes in fast-dissolving lozenges you place on your tongue.
The science behind it? MIT scientists discovered that nitric oxide production begins in your mouth, not your stomach. The bacteria on your tongue convert nitrates into nitric oxide — that’s the critical first step most supplements miss. CircO2’s lozenge delivery targets this process directly.
Why Do You Need CircO2?
Nitric oxide is your body’s “youth molecule.” It keeps blood vessels open, oxygen flowing, and your brain firing. But here’s the problem:
- By age 70, nitric oxide levels drop by a staggering 75%
- By age 80, they’re down by 85%
This decline causes:
Fatigue that steals your energy- Blood pressure concerns your doctor monitors
- “Senior moments” and memory lapses
- Reduced intimacy and bedroom performance
- Joint discomfort and limited mobility
- Cold hands and feet from poor circulation
CircO2 fixes this by restoring your nitric oxide levels fast.
How CircO2 Works (The MIT Breakthrough)
Most nitric oxide supplements fail for these reasons:
| Common Approach | Why It Fails |
|---|---|
| L-arginine pills | Loses up to 75% potency during digestion; after 45, your body struggles to convert it |
| Beet juice & greens | Need 2-3 pounds daily for effect; potency varies by soil quality |
| Standard capsules | Go to your stomach, but the FIRST step of NO production happens in your mouth |
The CircO2 Solution: MIT scientists found nitric oxide production STARTS in your mouth. CircO2’s fast-dissolving lozenges target the bacteria on your tongue — kickstarting production within minutes.
Clinical Results:
- 200% increase in nitric oxide levels within 20 minutes
- 34% increase in blood flow
No pill or capsule can match these results.
Key Ingredients & How They Work
CircO2 combines 6 powerful nutrients for maximum nitric oxide restoration:
- Beet Root Powder – A favorite of Olympic athletes, it’s rich in natural nitrates that open blood vessels, improve oxygen flow, and supercharge stamina.
- Hawthorn Berry – Used for centuries to support heart health, it’s now known to enhance nitric oxide absorption.
- L-Citrulline – Converts to nitric oxide more effectively than L-arginine, especially if you’re over 45. Supports circulation, blood pressure, memory, and sexual performance.
- Vitamin B12 – After 50, up to 30% of adults become B12 deficient. Boosts energy, nerve health, and nitric oxide production.
- Vitamin C – Acts as a catalyst for nitric oxide production and protects existing NO from oxidative damage.
- Magnesium – Relaxes blood vessels, regulates heart rhythm, and supports recovery.
7 Life-Changing Benefits of CircO2
Renewed Energy & Stamina – Stay active without afternoon fatigue- Sharper Thinking & Recall – Remember names and maintain mental edge
- Healthier Blood Pressure – Readings that impress your doctor
- Enhanced Mobility – Joints receive more oxygen and nutrients
- Improved Intimacy – Better blood flow to all areas of the body
- Restful Sleep – Wake refreshed, not groggy
- A Sense of Youth – Brain and body get optimal oxygen
How to Use CircO2
- Place one lozenge on your tongue
- Let it dissolve completely — this activates the bacteria in your mouth
- Use once or twice daily for best results
- Enjoy benefits within 20 minutes
Potential Cons & Side Effects
- Mild digestive upset if you have a sensitive stomach
- Possible blood pressure drop – monitor if you already have low BP
- Medication interactions – especially with nitrates, blood pressure meds, or ED medications
Precautions & Who Should Avoid It
Do not use CircO2 if you:
- Are pregnant or nursing
- Are under 18 years old
- Have known allergies to any ingredients
- Take nitrate medications (like nitroglycerin)
Always consult your doctor before starting any new supplement, especially if you have heart, liver, or kidney conditions, take prescription medications, or are scheduled for surgery.
What Customers Are Saying
Steven M., Guam
“Great product! I have been taking CircO2 for a few years now — great improvement on my blood pressure.”
Sheila K., Leesburg, VA
“Absolutely the BEST nitric oxide supplement. I’ve tried many — this one is by far the BEST! Restores blood flow FAST — great for lovemaking.”
Roxane M., Houston, TX
“I am never without CircO2! It makes me feel balanced. I’m 80 years old and start my day with CircO2!”
(Based on 1,618 reviews — 3.9 average rating | 74% recommend)
About Dr. Greg Eckel
Dr. Eckel is a Naturopathic Physician with over 23 years of experience in Integrative and Regenerative Medicine. He is the founder of bVital, combining naturopathy, Chinese Medicine, and cutting-edge technologies. He has been featured on ABC, NBC, and FOX, and served as President of the Board of Naturopathic Medical Examiners.
Frequently Asked Questions
Is CircO2 safe?
Yes, when used as directed. It contains natural, clinically studied ingredients.
How long until I feel it working?
Most users notice a difference within 20 minutes to a few days.
My blood pressure is already fine. Can CircO2 still help?
Yes — it supports overall circulation, energy, memory, and stamina.
Do I have to let it dissolve completely?
Yes — this is essential for the lozenge to activate nitric oxide production in your mouth.
The Bottom Line
CircO2 is not just another nitric oxide supplement. It’s a scientifically advanced lozenge that targets the MIT-discovered first step of nitric oxide production — right in your mouth. With a clinically proven 200% boost in NO levels in just 20 minutes, it addresses the hidden cause of fatigue, memory issues, blood pressure concerns, and reduced vitality.
If you’re over 45, 50, or 70 — and you want to feel younger, more energetic, and mentally sharp — CircO2 is worth trying.
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Disclaimer: 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. Results may vary. Always consult your physician before starting any new supplement, especially if you have pre-existing conditions or take medications.