
Tests by a Third Party: Reputable CBD brands often have their products tested by third-party labs to make sure they are pure and effective. Look for certificates of analysis (COAs) that say the gummies have the amount of CBD they say they do and are free of any harmful ingredients. Source of Hemp: The source of hemp can change the quality of CBD. Most of the time, industrial hemp grown in the U.S. or Europe is better because of stricter rules and higher quality standards. Manufacturing Practices: Good manufacturing practices (GMP) make sure that products are made in a safe and consistent way. Check to see if the brand follows GMP rules.