Nitric oxide is vitally important to our health. That’s why it’s so important to maintain healthy nitric oxide levels as we grow older. Now you can support the healthy production of nitric oxide in your body with CircO2.

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Every purchase protected by our 100% Satisfaction Guarantee. If you are unsatisfied for any reason, return it within 90 days for a full refund. You only pay return shipping.

Every purchase protected by our 100% Satisfaction Guarantee. If you are unsatisfied for any reason, return it within 90 days for a full refund. You only pay return shipping.

Support Healthy Nitric Oxide Production with Circ02

Scientifically formulated Circ02 helps maintain healthy nitric oxide production in the body. Noble Prize winning scientists have found Nitric Oxide helps to support a healthy cardiovascular system. Now you can support healthy nitric oxide production in your body with our nitric oxide lozenges.

What is Nitric Oxide?
Nitric oxide is a gaseous molecule synthesized from the amino acid L-arginine with molecular oxygen by: synthases,neuronal (nNOS), endothelial (eNOS), and inducible (iNOS). Nitric Oxide exercises crucial roles in vascular and neuronal signal transduction, smooth muscle contractility, bioenergetics, platelet adhesion and aggregation, immunity, and cell death regulation.

What are Nitric Oxide Supplements Used for?
Benefits of Nitric Oxide:
Nitric oxide is known to have blood-flow-enhancing effects, and supports healthy delivery of oxygen and nutrients to the muscles during exercise.

What are the benefits of Nitric Oxide Supplements for Sexual Enhancement?
How to naturally boost sexual performance:
Some men use Nitric Oxide as a natural way to aid with erectile issues and maintain a healthy sexual experience.

Does the Body Naturally Produce Nitric Oxide?
Yes, Nitric Oxide is produced by the endothelial cells lining the arteries; however, the amount of Nitric Oxide your body produces naturally can decrease as you age.

Can you naturally boost Nitric Oxide Levels?
How to boost Nitric Oxide Levels:
1. Diet: Foods such as Spinach, beets, celery, arugula lettuce, iceberg lettuce, carrots, parsley, cabbage, radishes, collard greens, etc. have small amounts of nitric oxide.

Vitamin B12:

What is Vitamin B12?
Hydroxocobalamin is the main vitamin B12 form found in meat, fish, and dairy products.


What is Magnesium?
Magnesium supports diverse biochemical reactions in the body, including protein synthesis, muscle and nerve function, blood glucose control, and blood pressure regulation. Magnesium is used for energy production and helps contribute to the structural development of bone.
What are the Benefits of Magnesium?: Magnesium aids in the transport of calcium and potassium ions across cell membranes, a process that is important to nerve impulse conduction, muscle contraction, and normal heart rhythm.

Beet Root Powder Root (Beta Vulgaris):

What is Beet Root Powder?
Beet Root comes from beets which is a nitrate-rich plant that grows in the ground.

What are the benefits of Beet Root Powder?
A source of nitrate, beetroot ingestion provides a natural means of supporting nitric oxide availability and aids in the management of diminished Nitric Oxide bioavailability, most notably in supporting normal blood pressure and endothelial function.

Hawthorn Berry Extract (Crateagus Oxycanthus):

What is Hawthorn Berry Extract?
Hawthorn has been used to support: heart health, digestive issues, and kidney health. Studies show hawthorn contains antioxidant compounds like oligomeric procyandins (OPCs, also found in grapes) and quercetin. Antioxidants are substances that destroy free radicals, which are compounds in the body that damage cell membranes and tamper with DNA. Free radicals occur naturally in the body and grow in number as we age.

What are the Benefits of Hawthorn Berry Extract? Studies show that hawthorn berry can benefit the body in many ways including:

  • Supporting healthy coronary artery blood flow
  • Aiding circulation
  • Supporting healthy blood pressure
  • Digestive and Kidney support


What is L-Citrulline?
L-citrulline is a naturally occurring amino acid found in food, such as watermelons, and is also made in the body. Our bodies change L-citrulline into another amino acid called L-arginine and also to nitric oxide.

What are the Benefits of L-Citrulline: L-citrulline helps to regulate the supply of ingredients the body needs to make certain proteins.

These statements have not been evaluated by the Food and Drug Administration.
This product is not intended to diagnose, cure, or prevent a disease.

CircO2 Nitric Oxide Lozenges Click image to enlarge

CircO2 Reviews

137 Reviews   |   3.3 Average Rating   |   58% Recommend This Supplement 

Feeling great *
By Raul F. () - 1/30/2018
I tested my saliva on the strip and reading came back as depleted. I’m almost 50 years old and started working out again. I have really noticed my neck and lower back pain almost completely gone, and my mobility is way better. I feel like I have more energy. I can’t wait to finish the product and retest but I feel really good. Great product!
  I Recommend This Supplement
  Verified Customer
CircO2 is Awesome *
By Amanda R. (New Zealand ) - 6/7/2017
I have recently trialed myself and two other friends the Circ O2. Results have been remarkable. We have all noticed a massive difference in our energy levels through out the day. Clearly we have all been in need of the product. Interestingly we are 3 different types of people also. 1 early 20's Healthy Male, 1 48 year old healthy and fit female, mother of 1, which is me and my colleague Mid 50's female with a variety of health issues. Yet all 3 of us found the product remarkable.
  I Recommend This Supplement
  Verified Customer
Best nitric oxide supplement on market *
By William S. (Elk Grove Village, IL) - 5/13/2017
I was concerned about too much stress to my heart until I found Circ O2 - this supplement gives me the confidence to challenge myself at 50 years of age without worrying about over-stressing my heart and with the added benefit of no side effects. thanks for providing Circ O2 - its been a life changer for me.
  I Recommend This Supplement
  Verified Customer
CircO2 gives me an extra burst of energy *
By EDNA R. (ALPHARETTA, GA) - 3/17/2017
Taking a Cir02 gives me an extra burst of energy. I also take a tablet before working out to increase my energy level.
  I Recommend This Supplement
  Verified Customer
CircO2 *
By Sheri A. (Tunkhannock, PA) - 3/16/2017
CircO2 has helped with my energy level. I will take it for the rest of my life! After the 1st month, and my levels of nitric oxide went up, I started taking it every other day.
  I Recommend This Supplement
  Verified Customer
Circ02 *
By Joni L. () - 3/15/2017
I just reordered this product because it works! My husband and I are in our 80's and 90's and our get-up-&-go got-up-& went! After trying lots of useless products, wasting time and money we decided to try Circ02. It worked!!! Our energy surged beyond measure, we sleep better and wake up fresh and ready to start the day! Do we recommend this product? IN A HEARTBEAT!!!
  I Recommend This Supplement
  Verified Customer
* Above are actual reviews from our customers. These customer’s statements may not reflect the typical purchaser’s experience and are not intended to represent or guarantee that anyone will achieve the same or similar results. The reviews should not be taken as the results a typical user will get. Your results may vary.
Advanced Bionutritionals® products are manufactured in the USA from globally sourced ingredients by Formulation Technology, Inc.