Medications for Brain Fog, Cognitive function?

Hello everyone, I hope I am posting in the correct forum. I have had DPDR symptoms for years but these days I seem to have no anxiety and panic attacks, they have been replaced with chronic brain fog and a general feeling of cognitive decline. I was hoping someone could give me their advice on which medications I could try to regain my brain. I have read a bit about Monafinil and it seems promising if I can get a prescription for it. Anyways, Any advice, opinions, or anything on fighting brain fog, memory issues, and cognitive issues would be greatly appreciated. Thank you very much.