Third-party testing or certificate of analysis (COA): COAs mean the company selling the CBD product has tested it at a third-party lab to check its strength and whether it is free from contaminants.

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Third-party testing companies include NSF (National Sanitation Foundation), USP (U.S. Pharmacopeia), and ConsumerLab, which place their seal on products to indicate quality and purity.

Their supplements are manufactured in third-party-certified facilities and undergo extensive testing, both in-house and through independent labs, to ensure purity, potency and optimal absorption.

Certifications like certified vegan or gluten-free can help you quickly identify suitable options. Third-party testing: Dietary supplements are not regulated like pharmaceuticals.