CircO2 Review
CircO2 Oxygen Booster and Circulation Support

CircO2

Advanced Bionutritionals’ natural nitric oxide booster to support circulation, energy, and mental clarity.

CircO2 is a fast-acting vegan sublingual lozenge designed to naturally increase nitric oxide levels in the body to support healthy circulation, sustained energy, sharper mental clarity, and cardiovascular health. It restores nitric oxide levels that decline with age, improving blood vessel flexibility and oxygen delivery throughout the body. The formula includes a blend of natural ingredients that synergistically boost nitric oxide production via dual pathways.


General Description

CircO2 is a dietary supplement formulated as a quick-dissolving sublingual lozenge that dissolves under the tongue for rapid and efficient absorption. It targets adults over 40 whose nitric oxide levels naturally decline with age. By restoring healthy NO levels, CircO2 promotes better blood flow and oxygen delivery throughout the body, which helps alleviate fatigue, brain fog, cold extremities, slow recovery, and supports cardiovascular and sexual health.

How Does CircO2 Work? 🧬

Chart showing the decline of nitric oxide production with age
The decline of nitric oxide production with age

CircO2 works by stimulating the body's production of nitric oxide (NO), a vital molecule for relaxing and widening blood vessels (vasodilation), improving blood flow and circulation. The formula provides L-citrulline and beetroot extract to support NO synthesis through nitrate conversion and amino acid pathways. Enhanced absorption is achieved via sublingual delivery, which bypasses gut digestion. Nitric oxide's vasodilation improves oxygen and nutrient delivery, cardiovascular function, stamina, mental clarity, and sexual performance. Vitamin C and other antioxidants protect NO from oxidative damage, prolonging its effects.

Powerful Natural Ingredients 🌿

Beet Root Powder
Beet Root Powder

Rich in natural nitrates for oxygen flow and enhanced stamina, supporting nitric oxide production naturally.

Hawthorn Berry
Hawthorn Berry

Supports heart health and improves nitric oxide absorption for better circulatory benefits.

L-Citrulline molecule model
L-Citrulline

Amino acid precursor that is efficiently converted into nitric oxide, boosting vascular flexibility and stamina.

Foods rich in vitamin B12
Vitamin B12

Supports energy metabolism, neurological function, and nitric oxide synthesis for overall vitality.

Magnesium rich foods
Magnesium

Relaxes blood vessels and supports heart and joint health enhancing circulation benefits.

Sodium Nitrite Icon
Sodium Nitrite

Enhances the formulation’s capacity to boost nitric oxide formation effectively and safely.

Benefits of CircO2 ⭐⭐⭐⭐⭐

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Improved Circulation

Relaxes and widens blood vessels to promote better blood flow and oxygen delivery.

Natural Energy Boost

Enhances energy without caffeine or stimulants for sustained vitality throughout the day.

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Sharper Mental Clarity

Supports enhanced brain blood flow leading to improved focus, memory, and cognitive function.

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Heart Health Support

Maintains flexible blood vessels and healthy blood pressure for overall cardiovascular wellness.

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Reduced Fatigue & Faster Recovery

Promotes quicker recovery after physical activity with less fatigue.

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Enhanced Sexual Performance

Improves genital blood flow contributing to better sexual vitality and performance.

User Reviews ⭐⭐⭐⭐⭐

Excellent product

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"I have been taking the CircO2 for over a year and it has given me more clarity and energy. I would recommend it to anyone."

Michael M. Verified Customer
This really really works!!!!!

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"When I get up in the morning I take one. Within a few minutes, I get a bump in energy that lasts. I'm glad I found this."

Wayne K. Verified Customer
It’s great!!

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"I definitely feel energized with CircO2!!! I have recommended it to friends and family!!"

Pam A. Verified Customer
CircO2 for blood pressure

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"Several years ago I started having blood pressure problems despite exercising and eating correctly. After two months of taking CircO2, my blood pressure improved to healthy levels and has remained stable since."

Ross S. Verified Customer
Working for me

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"I had bedroom problems for years. After using CircO2 for two months, I have seen an improvement and it is helping."

Paul K. Verified Customer

Refund Policy & Money-Back Guarantee

CircO2 is offered with a 90-day money-back guarantee. Customers can return the unused portion or even empty boxes within 90 days of purchase for a full refund, minus shipping costs. This risk-free trial policy allows users to try CircO2 with confidence and peace of mind.

Frequently Asked Questions

CircO2 is designed mainly for adults over 40 who experience natural declines in nitric oxide levels. It supports healthy circulation, energy, mental clarity, and cardiovascular health for anyone looking to improve these functions naturally.

Many users feel a natural energy and mental clarity boost within minutes due to the sublingual delivery method. However, consistent use over a few weeks maximizes benefits such as better circulation and cardiovascular improvements.

Yes! CircO2 is vegan, non-GMO, gluten-free, and dairy-free, formulated with natural ingredients to be safe and suitable for many dietary preferences and sensitivities.

Simply place one quick-dissolve lozenge under your tongue daily to rapidly absorb ingredients. Consistent daily use is recommended to maintain optimal nitric oxide levels.
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