Metagenics Immunocare 60tIngredients in Immunocare have been shown to or may: Support the immune system. Provides extract equivalent of 5g of Astragalus per tablet. Phytosterols have been shown to enhance TH1 cells and dampen TH2. Clinical benefits: Astragalus has been shown to support the immune system and improve resistance by the activation and proliferation of immune cells, including B cells, splenic lymphocytes, macrophages and particularly CD8 and CD4 T cells.