CircO2®

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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Money Back Guarantee

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.
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Support Healthy Nitric Oxide Production

As you probably know, nitric oxide is a little gas molecule produced in our bodies. It impacts the health of every cell, tissue, and organ. In fact, it is so important that the scientists who discovered what it does for us won the Nobel Prize.

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 healthy nitric oxide production in your body with our nitric oxide lozenges.

The main ingredient in our nitric oxide supplement is a special blend of extracts from herbs and beets. Why beets? Because emerging research suggests that beets are one of the best natural ways to support healthy nitric oxide levels.

In addition to beets, CircO2 also contains l-citrulline and hawthorn berry. You may know hawthorn as a time-tested natural way to support your circulation.

CircO2 also contains ingredients that help your body make the most of nitric oxide.

  • Vitamin B12: enhances the ability of cells to process nitric oxide and increase energy. It also supports your brain and nerves.

  • Vitamin C: helps make nitric oxide available to cells throughout your body.

  • Magnesium: Magnesium helps maintain a healthy heart rhythm. And it supports healthy arteries to keep blood flowing smoothly.

Give your body the support it needs to maintain healthy nitric oxide production as you age with this nitric oxide supplement.



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

59 Reviews   |   3.2 Average Rating   |   54% Recommend This Supplement 

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
Power Punch *
By Ken G. (Hattiesburg, MS) - 3/15/2017
In a 'World" filled with a lot of misdirection regarding health products, . . CircO2 should be congratulated for a product of quality . . . This method of providing Nitric Oxide to the body is superior to any I have tried (AND, I have tried many) . . .Anyone using it should feel the difference immediately . . .
  I Recommend This Supplement
  Verified Customer
Circ 02 *
By James E. B. (Ferriday, LA) - 10/6/2016
I certainly recommend this truly delicious locenge. It's so easy to take. And makes me feel great. Great way to increase your Oxygen.
  I Recommend This Supplement
  Verified Customer
Circ02 *
By JUNE P. (BAY CITY, MI) - 10/6/2016
Love it! Better energy, gums healthier, varicose MUCH better. Love it!!! I highly recommend it.
  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. in a facility GMP Registered by NSF® International.