Reviews For CircO2^® Nitric Oxide

I have taken these tabs twice daily for quite awhile but the indicator strip pads always read LOW. No advice is provided regarding how to increase the level to OPTIMAL.

Easy to take, but i do not know whether it has any affect.

I used this product before. the reading I got then was always light pink after 3 boxes.. I am halfway through the box I received and the reading is still light pink. At this stage I can not recommend this supplement

I've been using the product for quite some time now, and am still awaiting noticeable results. It may be working for some, but I've not had any real change in my well-being. I'm not about to give up.

Have not been able to test it under strict controls, but no harm in continuing to use it !!

We have been trying Circ O2 for a few weeks now. I know effects can't be expected immediately butadvertising did suggest some effect would be noticed by now. I will give it a fair trial run but if no benefit is noticed, I will ask for a refund.

I have previously tried another of these beet-based nitric oxide enhancers, which promised but did not deliver a same day energy surge, as well as beet juice (I don't mind the flavor at all). The description of ingredients for this product seemed more promising. But the test strips for all 3 have so far, hardly ever risen above the mid-range ("needs improvement"), and then only when I have used the product the previous night (as well as morning). It's as if my aging body is just not built to enjoy higher nitric oxide levels. Perhaps others have a better experience. I will not renew if things don't improve.

I have taken l box of the product and have not experienced any increase in my energy level. However, I am 83 years old and I have a very erratic sleep pattern, I have not had a good night's sleep for a long time. When I checked the color of my saliva is was less pink than the weakest one shown. I have only taken one tablet a day and I want to start 2 times daily. I am somewhat hesitant as to how strict the 12 hour schedule. I have not given up on this product---I just more time (I think).

I continue to use and have reordered three time (six boxes each order) and I'm not sure yet if it works or not. I just have no way of telling (in my case) but from what I read at my age, I should be taking nitric oxide booster. Not sure at this time if I can recommend this product to a friend.

So far I have not experienced any change. I do know we are all different and sometimes things work quickly with some. I shall keep taking the lozenges and believe for them to work.