I potentially might have access to a medication that blocks these receptors. The medication I have access to Mechanism of Action As a first-generation antipsychotic, prochlorperazine mainly blocks D2 dopamine receptors in the brain. It can also block histaminergic, cholinergic and noradrenergic receptors.15 Oct 2019 I have a family member who basically gets prescribed an unlimited supply of this medication, so I can get as much of it as I want. I was mainly thinking about using it when I ever lose control and can't stop PMOing. But I don't know if this will work? My family member is prescribed this for vertigo, but it is also used to treat nausea, schizophrenia, migraines, and anxiety. I have took it before when I have had bad nausea. I'm not sure if this would work for helping me if I lose control with PMO? If it did work I wouldn't want to take it all the time. I would only want to take it if I went in to a chaser effect or something.