Hello! I am glad to attend you on Healthcaremagic! I read carefully your question and understand your concern. As your sister has suffered several strokes, you should know that the main therapy is to prevent possible future strokes. In this regard, the blood thinner and control of her cardio-vascular risk factors (a better control of high blood pressure or diabetes, dyslipidemia, avoiding smoking contacts, etc. ) is necessary. Physiotherapy is the main cure to her limb numbness and to prevent possible muscle cramps. Unfortunately there are no special drugs for this medical condition. Hope to have clarified some of your uncertainties! Best wishes, Dr. Aida