Yes, there are herbs like Licorice, Astragulus, anGarlic are immune-stimulating herbs, They are auto-immune stimulating herbs; And Herbs like Chaga are immune-balancing tonics. Reishi (Ganoderma lucidum) is an immune tonic. Astragalus boosts your immune systems natural defenses. Agaricus subrufescens, Cordyceps militaris, Flammulina elutipes, Ganoderma applanatum, Ganoderma - Reishi, Grifola frondosa, Lyophyllum decastes, Morchella spp., Phallinus impudicus, Polyporus umbellatus, Tramates betulina, Trametes versicolor, Tremella mesenterica are all immune-modulating medicinal mushrooms.