Medically reviewed by Jessica Swirble, PharmDLast updated on April 17, 2025
Drug Information| | |
Quetiapine is an atypical antipsychotic medication primarily used to treat disorders that include schizophrenia, bipolar disorder, and major depressive disorder. It has also been found to be an effective treatment for major depressive disorder.
Quetiapine is primarily used to treat conditions where the use of atypical antipsychotics may be effective, and may need to be overseen gradually over time. It may also sometimes be used for off-label indications to help reduce the risk of secondary psychosis.
Quetiapine is also used to treat certain types of dementia, such as neuroleptic malignant syndrome (NMS), and certain forms of Alzheimer’s disease. It helps reduce the risk of dementia-causing complications, such as memory loss, and helps reduce the risk of developing Alzheimer’s disease by slowing down dementia-related brain damage.
Quetiapine is not specifically approved for use in individuals under 18 years of age. However, it is being researched for its potential use in treating conditions that are not typically treated by psychiatric medications, such as schizophrenia and bipolar disorder. Quetiapine is available as a generic medication.
Note:The information provided should not replace the advice of a licensed medical professional. Please consult with your licensed medical professional for more information.
Dosage Info:
The usual starting dose of quetiapine is 25 mg taken daily at the same time each day. The dosage is adjusted based on the patient's response, weight, and side effects. It may be increased to a maximum dose of 50 mg per day, based on the severity of the condition and response.
The maximum dose of quetiapine allowed was 600 mg per day. The maximum allowed dose of quetiapine in the UK was 6000 mg per day.
The quetiapine dose prescribed by your healthcare provider is the combination of two medications:
The antipsychotic medication Seroquel and the generic quetiapine Quetiapine are both used to treat schizophrenia and bipolar disorder.
Generic quetiapine is available as a blister pack (SEROquel) with a prescription from your licensed healthcare provider. The SEROquel contains Quetiapine as the active ingredient and is available as a blister pack with a prescription from your licensed healthcare provider.
Quetiapine is available as a generic tablet. The generic quetiapine is available as a blister strip (Quetiapine-Seroquel) with a prescription from your licensed healthcare provider.
Generic quetiapine is typically taken once daily, with or without food. However, it is important to take the medication exactly as prescribed by your healthcare provider and not exceed the recommended dose.
The dosage of quetiapine can vary based on the condition being treated and the patient's response. It is recommended to take quetiapine at the same time each day to maintain a consistent level of the medication in the body.
The duration of treatment for major depressive disorder (MDD) is 6 to 12 weeks. However, the duration of treatment for schizophrenia is up to 12 weeks. It is important to note that quetiapine does not work immediately if the patient is not responsive to other medications.
The dosage of quetiapine can be adjusted based on the severity of the condition and response to the medication. It is recommended to start with a low dose and gradually increase the dose over a period of time.
The maximum recommended dose of quetiapine in the UK was 6000 mg per day. The maximum recommended dose of quetiapine in the UK in the past year has not been established and is therefore not prescribed for patients with severe mental health conditions.
Seroquel (quetiapine) is a type of prescription medication called an antipsychotic drug. These medications often treat conditions that can cause psychosis or losing touch with reality, but they also help with different kinds of depression and anxiety—especially when first-line treatments aren’t enough.
There are two types of antipsychotic drugs. “Typical” antipsychotics refer to the first generation of these drugs, which were developed in the 1950s. “Atypical” antipsychotics, which were introduced in the 1990s, are considered second-generation drugs. They are just as effective as typical antipsychotics but are much less likely to cause complications such as movement and motor control problems.
Seroquel (quetiapine) is an atypical antipsychotic. It changes how certain chemicals (dopamine and serotonin) work in the brain.
Dopamine is a “chemical messenger” (neurotransmitter) that delivers instructions to nerve cells in the brain. It helps control mood, pleasure, motivation, memory, attention, and other functions. Serotonin is also a chemical messenger. It’s sometimes called the feel-good chemical because it helps regulate your mood and sense of well-being.
In people with depression or psychosis, dopamine and serotonin signals don’t work properly. Seroquel (quetiapine) works by blocking these abnormal signals.
Can quetiapine help with depressionFirst-generation antipsychotics are usually dosed at about half a 100 mg daily. But in people with first-line treatments, the dose is typically increased to 300 mg daily. That increases the risk of side effects, such as increased energy levels, decreased appetite, and weight gain.
Atypical antipsychotic drugs are prescribed at lower doses. Quetiapine is often prescribed in combination with other antidepressants. Some antipsychotic drugs may also be prescribed in a single dose.
Starting at 300 mg daily is important because antipsychotic treatment may not be as effective when you start at 400 mg. Starting at 400 mg might help people with first-line treatments make an educated decision about whether to start at 300 mg or 200 mg. Your healthcare provider will likely start you at 300 mg once you stop using antipsychotic medication.
Atypical antipsychotic drugs are often prescribed in a second-generation setting. Quetiapine is often prescribed in a third-generation setting, so it’s not a second-line drug. Quetiapine is usually taken in a lower dose.
Most antipsychotic drugs are best prescribed when first-line treatments aren’t enough. Atypical antipsychotics are prescribed when first-line treatments aren’t producing an effective effect. A doctor will likely start you at 300 mg and increase it to 400 mg as needed. The dose will decrease as you get older.
If you’re taking a third-generation antipsychotic drug, like olanzapine (Zyprexa), a third-generation antipsychotic drug likeotericin (Fetzima), or a tricyclic antidepressant like desvenlafaxine (Pristiq), your healthcare provider should likely start you at 300 mg or less once you stop using antipsychotic drugs.Fluconazole (Fluoxzole) is a fluconazole combination drug.
Fluvoxamine (Xenex) is a fluvoxamine combination drug. A doctor will likely start you at 400 mg and increase it to 300 mg as needed.
A person with bipolar disorder may need to take a third-generation antipsychotic drug for a few weeks before starting quetiapine. Bipolar disorder, too, can cause side effects.
Common side effects of quetiapine include:
Rarely, quetiapine can cause an increase in blood pressure, especially in people with preexisting heart conditions or who have had cardiovascular problems.
A clinical trial has found that quetiapine (generic name Seroquel) is associated with a lower risk of suicidal ideation and behavior in patients receiving antipsychotic medications, and lower risk of major depressive disorder.
The findings are published in theJournal of Clinical Psychiatry, published in theBritish Journal of Psychiatryon Oct. 11. The trial, which included a total of 5,931 patients, was conducted at the University of Toronto's Centre for the Prevention and Treatment of Psychotic Disorders, while the Ontario College of General Practitioners' Clinical Trialists' Group was at the University of Montreal's Centre for the Prevention and Treatment of Psychotic Disorders. The study involved 696 patients receiving quetiapine in a dose of 50 mg three times a day for five weeks.
The researchers found that patients taking quetiapine had a lower risk of suicidal ideation and behavior than those taking antipsychotic medications, with a greater risk of major depressive disorder. The researchers also found that patients taking quetiapine had a lower risk of major depressive disorder than patients taking antipsychotic medications alone.
The results of the study are published in theon Nov. 12 in the. The results of the study are based on the results of thefirst published in 2002. The study was conducted at the University of Toronto's Centre for the Prevention and Treatment of Psychotic Disorders, while the Ontario College of General Practitioners' Clinical Trialists' Group was at the University of Montreal's Centre for the Prevention and Treatment of Psychotic Disorders.
The researchers at the University of Toronto's Centre for the Prevention and Treatment of Psychotic Disorders conducted the study, which included a total of 5,931 patients, and their results were then presented at the annual meeting of the American Psychiatric Association in February of this year. They were able to demonstrate the association between quetiapine and a lower risk of suicidal ideation and behavior in patients taking quetiapine.
"Our findings are important in the context of the fact that quetiapine is a promising treatment option for the treatment of major depressive disorder, and its ability to lower the risk of suicidal ideation and behavior is of great clinical importance," said first author Dr. David P. Hulley, from the University of Toronto's Centre for the Prevention and Treatment of Psychotic Disorders.
The Canadian College of General Practitioners' Clinical Trialists' Group is responsible for coordinating the trial and its follow-up meetings, and its clinical trials. The study was conducted on a total of 5,931 patients taking quetiapine in a dose of 50 mg three times a day for five weeks.
About 50% of patients taking quetiapine had a history of substance abuse or substance use disorder. About 50% had a diagnosis of major depressive disorder.
The researchers found that patients taking quetiapine had a lower risk of suicidal ideation and behavior than patients taking antipsychotic medications alone. This is the first large-scale, randomized, controlled trial to evaluate the effects of quetiapine on the risk of suicidal ideation and behavior in patients receiving antipsychotic medications.
The researchers also found that patients taking quetiapine had a lower risk of major depressive disorder compared to patients taking antipsychotic medications alone.
About a quarter of patients taking quetiapine in a dose of 50 mg three times a day had a history of substance abuse or substance use disorder, compared to only 3% of patients taking antipsychotic medications alone. About half of patients taking quetiapine in a dose of 50 mg three times a day had a history of substance abuse or substance use disorder.
About one quarter of patients taking quetiapine in a dose of 50 mg three times a day had a history of substance abuse or substance use disorder.
Quetiapine Fumarate is a prescription drug used to treat schizophrenia and bipolar disorder. Seroquel (quetiapine fumarate) is a type of medicine called an antipsychotic. Seroquel is a type of medicine called a selective serotonin reuptake inhibitor (SSRI). Seroquel is a short-acting medication and can be used to treat a variety of conditions such as:
Quetiapine Fumarate is a prescription drug used to treat schizophrenia. Seroquel (quetiapine fumarate) is a short-acting medication and can be used to treat a variety of conditions, including:
It is important to note that Seroquel is not a controlled substance and should only be taken under the supervision of a healthcare professional. However, it is not a controlled substance and should only be used under the supervision of a healthcare professional.
Quetiapine (quetiapine fumarate) is a prescription drug used to treat schizophrenia.
Seroquel (quetiapine fumarate) can be taken by itself or in combination with other antipsychotic medications. It is important to follow the instructions on your prescription label closely. Follow the directions on the prescription label carefully and ask your doctor or pharmacist to explain any part you do not understand. The most common side effects of Seroquel include:
Quetiapine (quetiapine fumarate) belongs to a class of medications known as atypical antipsychotics. Seroquel (quetiapine fumarate) is a type of medicine called a antipsychotic.
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