How to Choose CBD For Dogs? "Equally as important, we will learn more about a safe dosage of CBD for dogs and potential side effects on dogs taking CBD. Notwithstanding the beneficial effects of CBD, the side effects of the same are yet to be fully understood. They should also confirm they are free from pesticides, heavy metals, and mold. We then submit our products to extensive laboratory testing from a third party laboratory to determine the purity and ensure our product is free from contaminants. As recreational marijuana use becomes more mainstream, at least according to polls, so do cannabis-infused products. Success stories abound of dogs overcoming anxiety, slowing seizures, and even beating cancer due to cannabidiol (CBD), one of more than 100 cannabinoids found in cannabis plants. Look for a product with the National Animal Supplement Counsel (NASC) Seal of Quality Assurance, and one that has a third-party certificate of analysis that includes potency, lists all ingredients, and discloses the possible presence of heavy metals, mycotoxins, or pesticides. But how can one substance help so many unrelated problems?