B-6 (pyridoxine) acts primarily as an enzyme catalyst in many body processes including energy metabolism and neurotransmitter function.* Before it can be used for this purpose it must be converted into its coenzyme form (P-5-P) by the liver. P-5-P eliminates this step by providing B-6 in its converted form, allowing for greater bioavailability. Coenzyme B-6 + Mg Bisglycinate | Take 1 capsule daily with a meal | UL Dietary Supplement Certification;GMP;Kosher (Triangle K);Non-GMO | GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our laboratory/testing methods (for stability, potency, and product formulation). | Packaged in the USA by a family owned and operated company since 1968 | During the summer months products may arrive warm but Amazon stores and ships products in accordance with manufacturers' recommendations, when provided.