Since your sister is in her ninth month, keeping her blood pressure controlled is crucial for her and the baby's safety. She should contact her obstetrician immediately for an urgent evaluation. Alphadopa (Methyldopa) is already at a high dose. Safe alternative or additional medications used at this stage include labetalol or oral nifedipine. Her doctor will decide whether to adjust her medication, combine treatments, or, since she is near term, plan for delivery. Please do not change her dosage without medical supervision. Go to the hospital immediately if she develops severe headaches, blurry vision, or upper abdominal pain.