Hi Leonora -Diana. If you read “Prescription for Herbal Healing” by American Author Phyllis A. Balch you will see that she recommends Astragalus as a beneficial herb for MG. There are other herbs not recommended, like Echinacea, but I have found Astragalus wonderful. It is not an immune stimulant in the same way some other herbs may be as it doesn’t stimulate reactions that create antibodies which are problematic.