My son met with road accident 3 years ago and suffered severe brain injury. Now though he is physically, he is still suffering from acute shirt term memory loss. He was was doing his bites 2nd year. Now due to retaining capacity as very low unable to pursue further education. He is on donep10 mg twice a day sincere than a year and nootropil 800 mg also. He had been given many medicines before that also. But now we have reached a point where we are seeing no improvement in memory issues. My question is that can these medicines hammer the memory if used for so long. Since his accident he is been continuously on medicines are there any other better medicines which can help him in improving his memory.