CircO2

For people who want to stay active without leaning on caffeine all day, CircO2 uses a fast-dissolving lozenge format built around nitric-oxide support.

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✓ 1,618 reviews · 3.9/5 on maker site◎ Ships to US, UK, Canada, Australia & New Zealand

WHEN IT MAY FITWalking, travel and caffeine-free vitality routines

HOW IT COMESFast-dissolve lozenges

WORTH KNOWINGCaffeine-free · 90-day guarantee

OUR EDITORIAL READEasy to fit into an active day

A CLOSER LOOK

What to know before it becomes part of your routine.

CircO2 is designed for someone who wants support for an active day without reaching for another coffee or energy drink. Instead of a standard capsule, it comes as a lozenge that dissolves in the mouth and contains beet root, hawthorn berry, L-citrulline, vitamin B12, vitamin C and magnesium.

The lozenge format is the practical difference. Directions suggest twice-daily use for the first week or two, followed by one morning lozenge depending on how it fits your routine. It contains no caffeine and comes with a 90-day satisfaction guarantee.

WHY IT STANDS OUT

✓The fast-dissolve lozenge offers an alternative for people who do not want another capsule in their routine.

✓The formula includes beet root, hawthorn berry, L-citrulline, vitamin B12, vitamin C and magnesium, with no caffeine.

✓A 90-day satisfaction guarantee is included. Three- and six-box options currently lower the price per box and include free shipping.

BEFORE YOU DECIDE

iPeople with low blood pressure are advised to speak with a physician before using CircO2.

iThe lozenge is meant to dissolve in the mouth before swallowing, which may not suit someone who strongly prefers capsules.

iThe routine may begin at twice a day for the first week or two, so keep that in mind when choosing how many boxes to order.

VITALITY · ACTIVE AGING

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Wellness note. Body Architects provides general information, not medical advice. Unless explicitly stated, our buying notes are based on public manufacturer/seller information rather than hands-on product testing. Supplements are not a substitute for medical care. If you are pregnant, nursing, have a medical condition or take medication, discuss supplements with a qualified healthcare professional. Always confirm current ingredients, directions, pricing, shipping and guarantee details on the seller's product page.

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