Seroquel is quetiapine. People are calling it an anti=psychotic because it is an anti-psychotic. That's its main use, and that's what it's licensed for.
> Quetiapine is a medication that works in the brain to treat schizophrenia. It is also known as a second generation antipsychotic (SGA) or atypical antipsychotic.
If doctors are prescribing seroquel for sleep problems i) that's pretty scary and ii) it's an off label use.
Quetiapine is labaled an anti-psychotic yes, but its pharmacological characteristics are not that straight forward. It has a much higher affinity for H1 (histamine) receptors than for D2 (dopamine) receptors. Meaning that in low doses it acts like an anti-histaminergic drug, having a very limited effect on dopaminergic systems. Around 60% of D2-receptors need to be blocked for a typical anti-psychotic effect, and that is nowhere near what is happening with say 50mg of quetiapine, which is a normal dose for sleeping aid. In those low doses it mainly acts on H1, alpha-1, M3, M1, and some 5HT type receptors. At a minimum of 300mg per day, it pharmacologically starts to act as an anti psychotic.
There is a nice brief summary of this in Stahl's Essential Psychopharmacology.
To be clear, I am very much against prescribing anti-psychotics as sleeping aids. But I don't think there is a strong case for calling quetiapine anti-psychotic in low doses.
https://bnf.nice.org.uk/drug/quetiapine.html
https://www.nami.org/About-Mental-Illness/Treatments/Mental-...
> Quetiapine is a medication that works in the brain to treat schizophrenia. It is also known as a second generation antipsychotic (SGA) or atypical antipsychotic.
If doctors are prescribing seroquel for sleep problems i) that's pretty scary and ii) it's an off label use.
EDIT: here's the FA information showing that seroquel is an antipsychotic and is not licensed to treat sleep problems. https://www.accessdata.fda.gov/drugsatfda_docs/label/2013/02...