Quetiapine is a different drug at different doses, and it is one of the few antipsychotics that covers the whole gamut of bipolar disorder. It works for almost everything at some dose, but the weight gain, appetite, diabetes risk and sedation mean we do not reach for it just because it works, we do not start it for sleep, and we see no good reason for the XR.
When we reach for it
It is one of the only antipsychotics that covers the whole gamut of bipolar: the depressive episodes and the mania.
“quetiapine is one of the only antipsychotics that kind of covers the whole gamut of bipolar. So it covers the depressive episodes. It covers the mania”
16:21Antipsychotic Tier List: Ranking the Best and Worst Anti-psychoticsOct 2026 It is approved and effective for bipolar depression. We do not use it much because of the side effect profile, but if someone does not gain weight and is not oversedated on it, it is a good choice.
“Seroquel is approved and effective. But again, with the side effect profile, I personally don't use it. But if someone doesn't gain weight from it and they're not overstated from Seroquel, it's a good choice then”
38:35The Best Bipolar Medication Review From The Best Bipolar ExpertJan 2025 As an antidepressant augmenter it has lower tardive dyskinesia risk than the other antipsychotics and is very well tolerated, so well tolerated that it can be hard to get patients off it once they are stable.
“It's got lower risk of tardive dyskinesia than other ones, and it's pretty dang well tolerated. It's so well tolerated, it's hard to get patients off of it sometimes once they're stabilized”
1:00:19Antidepressant Tier List: Psychiatrists Rank Depression Medications for MDDMay 2026
Dosing
It is literally a different medication at different doses: 50 mg is not one eighth of 400 mg. At 50 mg and below it is a sedative, really just hitting histamine; up to about 300 mg think of it for mood symptoms; above 400 mg you start to get D2 blockade.
“at low doses, it's a sedative at 50 milligrams and below. It's really just hitting the histamine at the 300 milligrams and below. We think about it as more of the mood symptoms. And then above 400 is when you start to get that D2 blockade”
13:29Antipsychotic Tier List: Ranking the Best and Worst Anti-psychoticsOct 2026 Also said in 1 more episode
“So it's really important to know that Seroquel isn't 50 milligrams of Seroquel isn't one eighth of 400 milligrams of Seroquel quetiapine. They are literally different medications at different dosages”
13:44Antipsychotic Tier List: Ranking the Best and Worst Anti-psychoticsOct 2026 There is no good reason to use the XR. Sedation 24 hours a day is not a good idea, and the XR blunts the benefit of the early-night peak for sleep.
“Well, should you really have the sedation of Seroquel for 24 hours a day? I don't think it's a good idea. So frankly, I don't think there's any good reason to do XR. And it also blunts the benefit of Seroquel's peak early on in the night to do sleep”
15:16Antipsychotic Tier List: Ranking the Best and Worst Anti-psychoticsOct 2026
Side effects and safety
You can use it in PTSD, anxiety and depression, but there is massive weight gain, appetite increase, diabetes risk and sedation compared with the actual antipsychotic benefit.
“You can use it in PTSD, anxiety, depression, all that stuff, but massive weight gain, appetite increase, diabetes risk, and sedation in comparison to the actual antipsychotic benefits you're getting”
12:18Antipsychotic Tier List: Ranking the Best and Worst Anti-psychoticsOct 2026 Even at low doses there is considerable appetite increase and weight gain.
“I find that even at low doses, there's considerable appetite increase in weight gain for both of those medications. So I avoid them”
34:11Insomnia and Sleep Medications in PsychiatryDec 2024 Giving antipsychotics to people without schizophrenia seems to raise the risk of tardive dyskinesia.
“It seems like giving antipsychotics to people without schizophrenia raises the risk of tardive dyskinesia”
45:42Anxiety Medications Tier List: The Best and Worst Treatments for GADJul 2026
For sleep and anxiety
We do not reach for quetiapine just because it works. The joke is that at some dose, quetiapine will treat every mental disorder.
“We don't have to reach for quetiapine just because it works. I have a joke. Quetiapine treats every mental disorder. Okay. At some dose, quetiapine will treat every mental disorder”
44:57Anxiety Medications Tier List: The Best and Worst Treatments for GADJul 2026 Most of what you want from low-dose quetiapine in a non-psychotic disorder you can get from mirtazapine, gabapentin, buspirone or hydroxyzine.
“I achieve most. Most of what you want from low-dose quetiapine, Especially in a non - non-psychotic disorder, by using mirtazapine, Gabby Hinton. Gabapentin, Buspirone. Buspirone, Hydroxyzine, anything else”
43:56Anxiety Medications Tier List: The Best and Worst Treatments for GADJul 2026 For sleep, it is an antipsychotic. Arguments that it only acts like one above a certain dose depend on cutoffs that not every clinician knows or follows.
“It is an antipsychotic. I don't care how much you want to tell me, oh, you know, based on reception. It's not until a XYZ dose. Not every clinician is going to follow or know the reasonable cutoffs”
41:06Sleep Medications Treatment Tier List: Best Insomnia Medications RankedAug 2026 We have never started it for sleep. But when a patient has tried everything else and quetiapine is the only thing that works, we are not opposed to keeping it.
“I don't think I've ever started it for sleep. I have had patients who mentioned they tried all the prior medications, they got the quetiapine. It's the only thing that works. I'm not opposed to keeping it”
42:04Sleep Medications Treatment Tier List: Best Insomnia Medications RankedAug 2026
Compared with others
Is it better in the long run than lithium plus lamotrigine? We do not think so, though no one has studied that head to head.
“is it actually better in the long run than let's say lithium plus lamotrigine? I don't think so. But, you know, they don't study that kind of thing head to head”
16:57Antipsychotic Tier List: Ranking the Best and Worst Anti-psychoticsOct 2026
It also comes up on
- AntipsychoticsThe pines (olanzapine, clozapine, quetiapine) are by far the most metabolic. The dones vary, with risperidone in the middle.
- AntipsychoticsComing off quetiapine, leave it in place, titrate the new drug on, then pull it off. Remember that partial agonists have the highest binding affinity.
- Metabolic side effectsThe pines (olanzapine, clozapine, quetiapine) are by far the most metabolic medications we have. The dones vary more, with risperidone in the middle.
- AkathisiaThe same doctors who say never prescribe benztropine will give olanzapine and quetiapine without blinking, and those are already anticholinergic.
- AnticholinergicsThe same doctors who say never prescribe benztropine will give olanzapine and quetiapine without blinking, and those are already anticholinergic.
- BenztropineThe same doctors who say never prescribe benztropine will give olanzapine and quetiapine without blinking, and those are already anticholinergic.
- Bipolar disorderThe mood stabilizers with antidepressant efficacy are the 'three Ls and a Q': in the discussion, lithium, lamotrigine, trazodone and quetiapine.
- HaloperidolIt is among the antipsychotics generally accepted in pregnancy, along with olanzapine and quetiapine.
From these episodes
- Antipsychotic Tier List: Ranking the Best and Worst Anti-psychoticsOct 2026 · 6 points
- Sleep Medications Treatment Tier List: Best Insomnia Medications RankedAug 2026 · 2 points
- Anxiety Medications Tier List: The Best and Worst Treatments for GADJul 2026 · 3 points
- Antidepressant Tier List: Psychiatrists Rank Depression Medications for MDDMay 2026 · 1 point
- The Best Bipolar Medication Review From The Best Bipolar ExpertJan 2025 · 1 point
- Insomnia and Sleep Medications in PsychiatryDec 2024 · 1 point
Every point above is something said on the Psychofarm podcast, with the words as spoken and a link to the moment in the episode. It is education, not medical advice, and an episode reflects what we thought when we recorded it.