← Antipsychotics

Quetiapine

Also known as Seroquel · Atypical (second-generation) antipsychotic

Withdrawal risk: Moderate

What it's used for

  • Schizophrenia
  • Bipolar disorder
  • Add-on for depression
  • Often used off-label at low doses for sleep/anxiety

Read about: Depression, Bipolar disorder, Schizophrenia, Insomnia

How it works: Blocks dopamine D2 and serotonin 5-HT2A receptors; strong antihistamine effect at low doses.

Common side effects

  • Sedation
  • Weight gain
  • Raised blood sugar and lipids
  • Dizziness

Tapering considerations

  • Rebound insomnia, nausea and restlessness are common.
  • Slow monthly reductions are described for longer-term users.
Why smaller steps near the end →

For prescribers & facilitators

  • Monitor metabolic parameters while on treatment.

Sources

  1. 01
    A method for tapering antipsychotic treatment that may minimize the risk of relapse

    Horowitz, Jauhar, Natesan, Murray & Taylor, Schizophrenia Bulletin, 2021

  2. 02
    The Maudsley Deprescribing Guidelines

    Horowitz & Taylor, Wiley-Blackwell, 2024