The present disclosure relates to non-acidic extracts or fractions selected from a Boswellia low polar gum resin extract fraction (BLPRE), a Boswellia volatile oil fraction (BVOIL), and a Boswellia oil fraction (BOIL) and their compositions. BLPRE, BOIL, and BVOIL are each derived from the gum resin of a Boswellia species. These compositions are useful for improving mental condition, enhancing brain functions such as cognition, memory, learning, communication and brain health, for treating impaired memory, and for preventing, control or treating memory and cognition related disorders/diseases. Additionally, BOIL, BVOIL, and mixtures of BOIL and BVOIL are useful for enhancing the bioavailability of a biological agent.