Patient: My father-in-law is 63 years old and suffers from simple red blood cell aplastic anemia (PRCA), the cause of which is unknown. Is the full-moon face and vision a toxic side effect of the drug? Can you tell me the best treatment plan for PRCA? Thank you! Shan Yuan Dong: If the treatment with androgens or methylprednisolone is not effective, it is recommended to try cyclophilin A. The treatment should be persistent for at least 3 months, preferably 6 months, and the daily dosage should not be less than 5 mg per kg of body weight. But unfortunately, the price is more expensive, with the domestic one month also cost two to three thousand dollars.