This is very common in recreational polydrug users, particularly in users of dissociative anesthetic drugs and psychedelics. So if you do those, stop for good. The effect will slowly mitigate.
I'm reading this thread intently after a friend who was in a clinical trial for psilocybin went for a ketamine treatment only a few days later. She has that floaters and brain fog. She recently started on an epilepsy drug that seems to be helping
