My friend has very bad brain fog from a physical condition. It’s so bad she often pauses when she speaks like a YouTube video trying to buffer on a bad internet connection and she told me she wants to be more like her former self. She’s on medication for the condition, but the brain fog is one symptom that persists. She wants some good insight on how effective amphetamines are for brain fog in the non-ADHD population. She could only find people who have both ADHD and brain fog which could skew things. She doesn’t have ADHD, just brain fog.
The effects vary a lot from person to person. For me, amphetamines cause brain fog. I remember years ago when I was first prescribed them, they worked great to treat my ADHD. I never felt any addictive tendencies and could stop using them for extended periods without any cravings or even withdrawal symptoms. Around the end of high school they started to give me horrible brain fog though, it would take me a few seconds to even recognize my name, I had a hard time remembering where I was or how I got there, it was pretty bad. I stopped using them pretty shortly after I figured out the cause of my symptoms. Definitely best to talk to a doctor about it, don’t assume it’s going to work for you.