Seroquel (Quetiapine Fumarate)

Name: Seroquel
Brand: AstraZeneca
SKU: 2033
Availability: InStock

Type

Product

Manufacturer

Country

Dosage

Qty-Price (USD)

Type:

Product: Seroquel

Manufacturer: AstraZeneca

Country: Canada

Dosage: 25 mg

Qty-Price (USD):

Type:

Product: Seroquel

Manufacturer: AstraZeneca

Country: Turkey

Dosage: 25 mg

Qty-Price (USD):

Type:

Product: Seroquel

Manufacturer: AstraZeneca

Country: Canada

Dosage: 100 mg

Qty-Price (USD):

Type:

Product: Seroquel

Manufacturer: AstraZeneca

Country: Canada

Dosage: 200 mg

Qty-Price (USD):

Type:

Product: Seroquel

Manufacturer: AstraZeneca

Country: Turkey

Dosage: 200 mg

Qty-Price (USD):

Type:

Product: Seroquel (ON BACKORDER)

Manufacturer: AstraZeneca

Country: Turkey

Dosage: 300 mg

Qty-Price (USD):

Generic Equivalent of Seroquel

Type

Product

Manufacturer

Country

Dosage

Qty-Price (USD)

Type:

Product: Quetiapine Fumarate

Manufacturer: Generic

Country: Canada

Dosage: 25 mg

Qty-Price (USD):

Type:

Product: Quetiapine Fumarate

Manufacturer: Generic

Country: India

Dosage: 25 mg

Qty-Price (USD):

Type:

Product: Quetiapine Fumarate

Manufacturer: Generic

Country: Canada

Dosage: 50 mg

Qty-Price (USD):

Type:

Product: Quetiapine Fumarate

Manufacturer: Generic

Country: India

Dosage: 50 mg

Qty-Price (USD):

Type:

Product: Quetiapine Fumarate

Manufacturer: Generic

Country: Canada

Dosage: 100 mg

Qty-Price (USD):

Type:

Product: Quetiapine Fumarate

Manufacturer: Generic

Country: Canada

Dosage: 150 mg

Qty-Price (USD):

Type:

Product: Quetiapine Fumarate

Manufacturer: Generic

Country: Canada

Dosage: 200 mg

Qty-Price (USD):

Type:

Product: Quetiapine Fumarate

Manufacturer: Generic

Country: Canada

Dosage: 300 mg

Qty-Price (USD):

Type:

Product: Quetiapine Fumarate

Manufacturer: Generic

Country: India

Dosage: 300 mg

Qty-Price (USD):

Seroquel Information

medically reviewed by Carol Hou (BSc. Pharm) on September 3, 2025.

A licensed pharmacist (Licensed Community Pharmacies Directory | College of Pharmacists of British Columbia) with over 20 years of experience in medication management, specifically medication safety, she has reviewed the information for accuracy and completeness.

Seroquel and Quetiapine at CanadaPharmacyOnline.com

AstraZeneca developed and formerly marketed Seroquel and Seroquel XR.

Generic quetiapine is available and is sourced from manufacturers that meet applicable regulatory standards. The specific manufacturer of your dispensed medication may vary.

Important Information about Generic Quetiapine:

Generic quetiapine contains the same active ingredient as brand-name Seroquel and is required to meet the same safety, effectiveness, and quality standards. This means it is designed to work in the same way as Seroquel. Studies have demonstrated bioequivalence between generic and brand-name quetiapine, meaning they have comparable absorption rates and overall effects. However, individual responses to any medication can vary. Talk to your doctor or pharmacist if you have any questions about using generic quetiapine.

For more information about generic drug approval and bioequivalence, please visit Access to Generic Drugs in Canada | Canada.ca.

Dosage:

Seroquel (quetiapine) is a medication available in two primary oral tablet formulations:
• Immediate-release (IR): The brand name Seroquel and its generic equivalent, quetiapine, are available in a wider range of strengths (at this pharmacy):
o 25 mg
o 50 mg
o 100 mg
o 200 mg
o 300 mg
• Extended-release (ER or XR): The brand name for this once-daily formulation is Seroquel XR.

Your doctor will determine the appropriate dose based on your individual needs and medical conditions.

Usage:

Quetiapine is a prescription medication used to treat schizophrenia, bipolar disorder (manic and depressive episodes), and major depressive disorder (as an add-on treatment).

Mechanism of Action:
Seroquel (quetiapine) is an atypical antipsychotic that works by affecting the levels of several neurotransmitters in the brain. It acts as an antagonist (blocker) at multiple receptors, including serotonin (5-HT1A, 5-HT2A, 5-HT2C), dopamine (D1, D2), histamine (H1), and adrenergic (alpha1) receptors. The combined effect on these neurotransmitter systems is thought to contribute to its antipsychotic, mood-stabilizing, and antidepressant effects.

Take Seroquel exactly as your doctor prescribes, following the instructions in the National Institutes of Health (NIH) or the patient information leaflet provided by your pharmacy. Consult your doctor for personalized guidance and safe use.

The information below summarizes some, but not all, potential side effects, risks, and interactions. Before taking Seroquel, it is essential to discuss all possible side effects, risks, and interactions with your doctor or pharmacist.

Side Effects:

The information below is a partial list of side effects; individual reactions can vary. Before starting Seroquel, it is crucial to discuss potential side effects and risks with your doctor or pharmacist.

Common side effects – These are examples of some common side effects of Seroquel, but others are possible. Contact your doctor promptly if any side effects persist, worsen, or concern you, or if you experience any other concerning symptoms.
• Drowsiness or sedation (especially at the start of treatment)
• Dizziness
• Dry mouth
• Increased appetite and weight gain
• Fatigue
• Constipation
• Headache
• Nervousness or shakiness
• Blurred vision

Serious or rare side effects – Stop taking Seroquel and seek immediate medical attention right away if you experience any of the following symptoms:
• Changes in heart rhythm (fast, slow, or irregular heartbeat)
• Dyslipidemia (e.g., high cholesterol or triglycerides)
• High blood sugar (hyperglycemia), including increased thirst and urination
• High fever, stiff muscles, confusion, sweating, fast or irregular heartbeat (neuroleptic malignant syndrome)
• Involuntary movements, including tardive dyskinesia (e.g., uncontrolled muscle movements in your face such as chewing, lip smacking, frowning, tongue movement, blinking, or eye movement)
• Orthostatic hypotension (sudden drop in blood pressure when standing, leading to dizziness or fainting)
• Seizures
• Severe allergic reaction (rash, itching, swelling, trouble breathing)
• Severe drowsiness or coma
• Thoughts of suicide or self-harm
• Thyroid abnormalities (e.g., changes in thyroid hormone levels)

Contraindications:

This is not an exhaustive list of contraindications. It is crucial to discuss all your medical conditions, past and present, and all medications you are taking with your doctor or pharmacist before starting Seroquel.

Seroquel should not be used if:
• You are allergic to quetiapine or any of its ingredients.

Tell your doctor about all of your medical conditions, past and present, before starting Seroquel. This is crucial because certain conditions can affect whether Seroquel is right for you. These conditions may include, but are not limited to:
• Cataracts
• Diabetes or high blood sugar
• Heart problems or a history of heart attack
• High cholesterol or triglycerides
• History of seizures
• Low white blood cell count
• Neuroleptic malignant syndrome (NMS)
• Parkinson’s disease
• Personal or family history of QT prolongation
• Stroke or mini-stroke
• Tardive dyskinesia
• Thyroid problems

Dizziness and Drowsiness:
Seroquel may cause dizziness, drowsiness, or blurred vision. Avoid driving, operating machinery, or engaging in activities that require alertness until you understand how it affects you.

Important Instructions:
Do not stop this medication unless directed by your doctor. Stopping Seroquel suddenly can cause withdrawal symptoms such as nausea, vomiting, trouble sleeping, and irritability. Your doctor will usually want to gradually decrease your dose if you need to stop taking it.

Drug Interactions:

Before taking Seroquel, it is essential to discuss all potential risks and interactions with your doctor or pharmacist. For complete and up-to-date information, please visit the product monograph in Canada: https://pdf.hres.ca/dpd_pm/00001972.PDF.

Provide your doctor with a complete list of all your medications, including prescriptions, over-the-counter (OTC) drugs, vitamins, and herbal supplements. Seroquel can interact with several medications, including (but not limited to):
• Alcohol: Can significantly increase drowsiness and impair coordination and judgment.
• Antiarrhythmics (medications for irregular heartbeat that may prolong the QT interval): (e.g., amiodarone, quinidine, sotalol)
• Antibiotics (certain types, especially macrolides and fluoroquinolones): (e.g., azithromycin, clarithromycin, erythromycin, moxifloxacin)
• Antidepressants (certain types): (e.g., citalopram, escitalopram, SSRIs, SNRIs, tricyclic antidepressants (TCAs), MAOIs)
• Antifungals (certain azoles): (e.g., fluconazole, itraconazole, ketoconazole)
• Antihistamines (sedating): (e.g., diphenhydramine), which can increase drowsiness.
• Antipsychotics (other): (e.g., haloperidol, thioridazine, ziprasidone)
• Barbiturates: (e.g., phenobarbital)
• Cimetidine: (An H2 blocker that can increase quetiapine levels)
• Diuretics: (Can increase the risk of hypokalemia, a side effect also associated with quetiapine)
• Dopaminergic Agents / Parkinson's Medications: (e.g., levodopa, carbidopa-levodopa, bromocriptine), as quetiapine can block their effects.
• Medications that Cause Drowsiness / Sedation (CNS depressants): (e.g., lorazepam, other sedatives, hypnotics, opioid pain medications, muscle relaxants)
• Metoclopramide: (Can increase the risk of movement disorders when taken with quetiapine)
• NSAIDs (Nonsteroidal Anti-inflammatory Drugs) (e.g., ibuprofen, naproxen), especially when used long-term, may increase the risk of kidney problems or gastrointestinal bleeding.
• Strong CYP3A4 Inducers: (e.g., carbamazepine, phenytoin, rifampin)
• Strong CYP3A4 Inhibitors: (e.g., ritonavir, cobicistat)

Pregnancy and Breastfeeding:

If you are pregnant or planning to become pregnant, you must inform your doctor. Seroquel should only be used during pregnancy if the potential benefit to the mother outweighs the potential risk to the fetus. Newborns exposed to antipsychotic drugs during the third trimester of pregnancy are at risk of experiencing withdrawal symptoms or extrapyramidal symptoms (involuntary movements) after birth.

Quetiapine is known to pass into breast milk and may harm a nursing infant. Women who are breastfeeding should have a thorough discussion with their doctor about the risks and benefits before using this medication.

Use in Older Adults

Elderly patients, particularly those with dementia-related psychosis, may have an increased risk of death when taking antipsychotic medications like Seroquel (quetiapine). There is also an increased risk of stroke or mini-stroke (transient ischemic attack) in this population. Seroquel is not approved for the treatment of behavioural problems in elderly patients with dementia-related psychosis. It is crucial to discuss these serious risks with your doctor if you are an elderly patient or a caregiver for one, and if the patient has dementia.

Use of Seroquel in Children and Adolescents

Seroquel (quetiapine) has a limited and carefully defined use in pediatric patients. In Canada, Health Canada has approved the immediate-release (Seroquel) and extended-release (Seroquel XR) formulations for specific conditions in older age groups. Specifically, the medication is approved for the treatment of schizophrenia in adolescents aged 13 to 17 and for bipolar mania in children and adolescents aged 10 to 17. The safety and effectiveness of the medication have not been established in children younger than the approved age range. Additionally, the drug label includes a severe warning about an increased risk of suicidal thoughts and behaviors in young people taking this medication, emphasizing the need for close monitoring.

Frequently Asked Questions about Seroquel at Canada Pharmacy Online:

Why is Seroquel more affordable in Canada than in the United States?

Prescription drug prices, including Seroquel, are generally lower in Canada than in the US due to a combination of factors, primarily government price regulations, differing market dynamics, and other economic considerations. In Canada, provincial and federal governments negotiate drug prices with pharmaceutical companies, which often results in lower costs compared to the US, where market forces play a more significant role. For more information, see the FAQs on Prescription Drug Importation from the Kaiser Family Foundation (KFF): https://www.kff.org/health-costs/issue-brief/faqs-on-prescription-drug-importation/.

Can I take Seroquel with food?

Seroquel can be taken with or without food. However, be consistent in how you take it each day. Extended-release tablets should usually be taken once daily in the evening, without food or with a light meal. Follow your doctor’s instructions.

Can I crush or chew Seroquel tablets?

Swallow Seroquel tablets whole. Do not crush, chew, or break them. If you have difficulty swallowing pills, consult your doctor or pharmacist about alternative options.

Will Seroquel cure my mental health condition?

Seroquel helps to manage the symptoms of schizophrenia, bipolar disorder, and major depressive disorder. It is not a cure, and long-term treatment is often necessary.

How quickly does Seroquel start working?

The onset of action can vary depending on the condition being treated. Some effects, such as sedation, may be noticeable relatively quickly. In contrast, the full therapeutic effects for mood or psychotic symptoms may take several weeks.

What should I do if I miss a dose of Seroquel?

If you miss a dose of Seroquel, take it as soon as you remember unless it is almost time for your next dose. If it is close to your next dose, skip the missed dose and continue with your regular dosing schedule. Do not take a double dose to make up for a missed one.

How much is the shipping?

Our shipping fee is a flat rate of $10.00 per order. Our pharmacy focuses on getting you the lowest prices on high-quality products.

How do I order from your pharmacy?

Ordering from us is very simple. You can purchase online or call Customer Service at 1866.920.3784; for more information or to learn about the ordering process, visit our How to Order page.

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The information on this page is sourced from independent third parties contracted by CanadaPharmacyOnline. While we cannot guarantee its medical accuracy, we strongly recommend consulting a healthcare professional for personalized advice regarding medications or medical conditions.

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