ProveIt Supplements

Independent, evidence-based supplement analysis.

✓ Not Sponsored

✓ No Paid Reviews

✓ Science-Based

Company

  • About Us
  • Our Methodology
  • Contact
  • Blog
  • Authors

Legal

  • Privacy Policy
  • Terms of Service
  • Medical Disclaimer
  • Affiliate Disclosure

Resources

  • All Categories
  • Ingredient Database
  • Browse Supplements
  • FAQ

© 2025 ProveIt Supplements. All rights reserved.

Medical Disclaimer: The information provided is for educational purposes only and is not intended as medical advice. Always consult with a qualified healthcare professional before starting any supplement regimen.

Prove It
Browse SupplementsBlogAuthorsAboutMethodologyFAQ
Get Your Personalized Supplement StackSupplement Stack Quiz
Menu
HomeBrowse SupplementsBlogAuthorsAboutMethodologyFAQ
circo2

circo2

circo2

#Other
68
Safety75
Efficacy60
Transparency70
Based on Examine, Wikipedia, and 23 other sources

Overview

Circo2 aims to enhance circulation and oxygen levels through a combination of vitamins and a nitric oxide blend. While Vitamin C and B12 are present in significant amounts and may have health benefits, the proprietary blend makes it difficult to determine the effectiveness of the nitric oxide-boosting components. The actual amounts of Beetroot powder, hawthorne berry extract and L-citrulline cannot be verified, which impacts the overall certainty regarding the product's efficacy.

The Good

Provides a substantial dose of Vitamin B12 (methylcobalamin), which is beneficial for those deficient in this vitamin.

Contains a clinically relevant dose of Vitamin C, important for immune function and overall health.

Magnesium Ascorbate is a buffered form of Vitamin C, that may be gentler on the stomach.

The Bad

Proprietary blend obscures individual ingredient dosages, limiting a complete safety and efficacy assessment.

Daily Value for Magnesium is extremely low, offering negligible benefit for magnesium-deficient individuals.

Overly High B12 dosage is unnecessary for most people, the excess is excreted.

Is it for you?

Best For: Individuals seeking cardiovascular support, those looking to improve circulation, active adults

Skip If: You are pregnant or nursing, have low blood pressure, or are on blood-thinning medication without consulting a doctor.

Ingredients Analysis

Vitamin C (as magnesium ascorbate and ascorbic acid)

100 mg

Vitamin B12 (as methylcobalamin)

1000 mcg

Magnesium (as magnesium ascorbate)

420 mg

Proprietary Nitric Oxide Blend

420 mg

Beetroot powder

0 mg

hawthorne berry extract (Crataegus laevigata)

0 mg

L-Citrulline

0 mg

How to Use

Dissolve one tablet in water and drink. Follow specific dosage instructions on the product label.

Frequency:

Daily

Best Time:

Morning

When:

On an empty stomach or with light food

Who Should Use This

Best For:

Individuals seeking cardiovascular support, those looking to improve circulation, active adults