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MRP: Rs. 155 for 1 strip(s) (10 tablet xls each)
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Composition for QUSER XL

Quetiapine(300 mg)

food interaction for QUSER XL

alcohol interaction for QUSER XL

pregnancy interaction for QUSER XL

lactation interaction for QUSER XL

It is better to take Quser xl 300mg tablet empty stomach (1 hour before food or 2 hours after food).
Quser xl 300mg tablet may cause excessive drowsiness and calmness with alcohol.
Quser xl 300mg tablet may be unsafe to use during pregnancy.
Either animal studies have shown adverse effect on fetus and there are no human studies or studies in human and animals are not available. It should be given only if potential benefits justifies risk to the fetus. Please consult your doctor.
Unknown. Human and animal studies are not available. Please consult your doctor.


Quetiapine(300 mg)


Quser xl 300mg tablet is used for the acute and maintenance treatment of schizophrenia (a mental illness that causes disturbed or unusual thinking, loss of interest in life, and strong or inappropriate emotions), mania (abnormally excited or irritated mood) and depression symptoms in bipolar disorder (maniac depression with unusual extreme mood swings) in adult patients. It is also used as an add-on therapy in major depressive disorders (a mood disorder that causes a persistent feeling of sadness and loss of interest, so much so that it interferes with normal daily activities).

How it works

Quser xl 300mg tablet belongs to a group of medications called atypical antipsychotics. It works by changing the activity of certain natural substances (serotonin and dopamine) in the brain.

Common side effects

Vomiting, Nausea, Altered libido, Joint pain, Constipation, Dizziness, Drowsiness, Dry mouth, Flatulence, Headache, Increased appetite, Indigestion, Irritation, Nasal congestion, Stomach pain, Weakness, Weight gain, Absence of menstrual periods, Irregular menstrual cycle


No substitutes found

Expert advice for QUSER XL

  • Do not take quetiapine if you have allergy to quetiapine or any of the ingredients of the medicine.
  • Do check your weight at regular intervals as quetiapine is known to cause weight gain.
  • Do not drive or use any tools or machines unless you know how quetiapine affect you; this is because quetiapine is known cause sleepiness.
  • Do not stop quetiapine abruptly; do inform your doctor as he/she would decide and reduce the dose gradually for 1 to 2 weeks before stopping.
  • Do get your blood checked at regular intervals, as suggested by your doctor, as many of the side-effects of quetiapine are noted only when a blood test is done.
  • Do inform your doctor if you are going for urine drug screening. This is because your urine may cause positive results for methadone or certain drugs for depression called tricyclic antidepressants (TCAs) when some test methods are used, even though you may not be taking methadone or TCAs. Hence, a different test method may be used for you.
  • Take special precaution if you suffer from have ever suffered any brain damage or coma, epilepsy or convulsions; muscle weakness (a disease called myasthenia gravis).
  • Take special precaution while taking quetiapine if you observe symptoms of neuroleptic malignant syndrome (a combination of fever, severe muscle stiffness, sweating or a lowered level of consciousness); long-lasting and painful erection (priapism); uncontrollable movements (mainly of your face or tongue), fits, suicidal thoughts, or dizziness.
  • Quetiapine is not recommended in children and adolescents below 18 years of age.

Frequently asked questions for QUSER XL


Q. Can I take Seroquel for sleep/ anxiety? 
No, Seroquel is used to treat symptoms of schizophrenia, mania, depression associated with bipolar disorder, and major depressive disorder.
Q. Can I take Seroquel forever? 
No, you should take Seroquel as prescribed your doctor.
Q. Is quetiapine same as Seroquel?
Yes, Seroquel is the trade name for the active ingredient quetiapine.
Q. Is quetiapine dangerous?
Quetiapine is safe if used at prescribed doses for the prescribed duration as advised by your doctor.
Q. Is quetiapine a narcotic/ Benzo/ Benzodiazepine?
No, quetiapine is not a narcotic/ Benzo/ Benzodiazepine; it belongs to a group of medications called antipsychotic agent.
Q. Is quetiapine a sedative?
Quetiapine is not a sedative drug; however, sedation is a known side effect of this drug.
Q. Is quetiapine addictive?
No, quetiapine is not an addictive drug.
Q. Is quetiapine a mono amine oxidase inhibitor (MAO-I)?
No, quetiapine belongs to a group of medications called antipsychotic agent.


Content on this page was last updated on 09 November, 2015, by Dr. Varun Gupta (MD Pharmacology)