The present invention provides Boswellia low polar gum resin extract (BLPRE) comprising novel phytochemical composition of sesquiterpenes, diterpenes, triterpenes and other phytochemical(s) obtained from gum resin of Boswellia species. The invention also provides compositions comprising BLPRE in combination with one or more component(s) selected from biologically active ingredient(s), functional ingredient(s), excipient(s), diluents(s), carrier(s) and additive(s) or mixtures thereof. Further the invention also provides synergistic composition(s) comprising Boswellia low polar gum resin extract (BLPRE) and at least one component selected from but not limited to extract(s), fraction(s), phytochemical(s) or their salts or mixtures thereof derived from Boswellia species or Curcuma species.