Are there medications that help with the brain?

For dementia, the answer is no. For mental health, the answer is yes. For example, my dad takes Zoloft now. He calls it his “attitude medicine” and it’s definitely been a help

You may find this info from the Alzheimer's Association helpful

https://www.alz.org/alzheimers-dementia/treatments/medications-for-memory

There is no proven medication or supplement that slows the progression of dementia. The meds out there only help to treat symptoms.