The present invention is directed to compositions for improving immune function and sensitivities to the natural and manmade environment that include ingredients from natural sources. It is further directed to methods of administering the compositions and kits containing the compositions. In a composition aspect, the composition is for regulating immune function and non-immune related sensitivities. It consists essentially of: 2 weight percent to 95 weight percent Psoralea; 2 weight percent to 95 weight percent Scutellaria; and 2 weight percent to 95 weight percent Xanthium. The Scutellaria portion may be replaced by Gardenia (in equal measure), or by a mixture of Scutellaria and Gardenia.