No. Myasthenia gravis can not be cured but can be treated with medications and at times surgical intervention to remove the thymus gland. This life threatening disorder requires acute interventions during exacerbations and long term chronic therapy to maintain the patient. There are no natural products that can do this.
Generally NO. About 1/3 can see spontaneous remission, 1/3 stabilize on chronic medications, and 1/3 have progressive difficulties. Chronic and/or longterm medications may aid but can have significant adverse impact on life and/or health. In appropriate candidates, minimally invasive thoracic surgery to remove thymus (thymectomy) can possibly cure or stabilize disease or decrease amount and/or types of meds.