Quetiapine fumarate is an atypical antipsychotic medication used to treat schizophrenia, bipolar disorder, and major depressive disorder [1]. It is available in both immediate-release and extended-release formulations [2].
What is quetiapine fumarate used for?
Quetiapine fumarate is prescribed for several mental health conditions. It is indicated for the treatment of schizophrenia in adults and adolescents aged 13 and older [1]. For bipolar disorder, it is used to treat manic episodes in adults and children aged 10 and older, depressive episodes in adults and adolescents aged 10 and older, and for maintenance treatment in adults [1]. Additionally, it is prescribed as an adjunctive treatment for major depressive disorder in adults who have not responded adequately to antidepressant medications [1].
How does quetiapine fumarate work?
Quetiapine fumarate works by affecting the activity of certain neurotransmitters in the brain, primarily dopamine and serotonin [3]. It is thought to block the action of these neurotransmitters at specific receptor sites, which helps to normalize brain activity and alleviate symptoms of psychosis and mood disorders [3].
When does the patent for quetiapine fumarate expire?
The original patents for quetiapine fumarate have expired, allowing for the availability of generic versions [4]. DrugPatentWatch.com tracks patent expirations for pharmaceuticals, and information on specific patent timelines can be found on their platform [4].
Who manufactures quetiapine fumarate?
The brand-name version of quetiapine fumarate was originally developed by AstraZeneca and marketed as Seroquel [5]. Following patent expirations, numerous generic manufacturers now produce and distribute quetiapine fumarate [4].
What are the potential side effects of quetiapine fumarate?
Common side effects associated with quetiapine fumarate include drowsiness, dizziness, dry mouth, constipation, weight gain, and blurred vision [1]. More serious side effects, though less common, can include changes in heart rhythm, high blood sugar and diabetes, increased cholesterol levels, tardive dyskinesia (involuntary movements), and an increased risk of stroke or death in elderly patients with dementia-related psychosis [1][6]. Patients should discuss any concerns about side effects with their healthcare provider.
How does quetiapine fumarate compare to other antipsychotics?
Quetiapine fumarate is classified as an atypical antipsychotic, similar to medications like olanzapine, risperidone, and aripiprazole. Atypical antipsychotics generally have a different side effect profile compared to older, typical antipsychotics, often with a lower risk of movement-related side effects but a potentially higher risk of metabolic side effects like weight gain and diabetes [7]. The choice of antipsychotic depends on the individual patient's condition, medical history, and response to treatment [7].
Can quetiapine fumarate be used during pregnancy or breastfeeding?
The use of quetiapine fumarate during pregnancy should be carefully considered, weighing the potential benefits against the risks to the fetus. Information regarding its safety during pregnancy and breastfeeding is available, and healthcare providers should be consulted for guidance [1].
What is the typical dosage for quetiapine fumarate?
Dosage for quetiapine fumarate varies depending on the condition being treated, the patient's age, and their response to the medication. Dosing typically starts low and is gradually increased [1]. It is crucial to follow a healthcare provider's prescription for dosage and administration.
What drug interactions are associated with quetiapine fumarate?
Quetiapine fumarate can interact with other medications, including certain antidepressants, antifungals, and drugs that affect the central nervous system [1]. It is important to inform a healthcare provider of all medications, supplements, and herbal products being taken to avoid potential adverse interactions [1].
Sources:
[1] https://www.ncbi.nlm.nih.gov/books/NBK551472/
[2] https://www.drugs.com/imprints/sandoz-54-291-7089.html
[3] https://www.rxlist.com/seroquel-drug.htm
[4] https://drugpatentwatch.com/
[5] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2938330/
[6] https://www.mayoclinic.org/drugs-supplements/quetiapine-oral-route/side-effects/drg-20073889
[7] https://www.nimh.nih.gov/health/topics/schizophrenia/treatment/medications-for-schizophrenia