Country Life is the world leader in B Vitamins, procuring the purest ingredients, many in their body-ready forms. Through years of experience and a science-forward approach, weve created Coenzyme B-Complex Advanced, one of our most potent formulas, combining B vitamins essential to physical and mental health with complimentary ingredients like Pyrroloquinoline quinone (PQQ). B vitamins are vital to energy levels, metabolism and mood.