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  3. QUSER XL 300MG TABLET

QUSER XL 300MG TABLET, Pack of 10 TabletS
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Written By Bayyarapu Mahesh Kumar , M Pharmacy
Reviewed By Dr Aneela Siddabathuni , MPharma., PhD

QUSER XL 300MG TABLET is used in the treatment of bipolar depression, mania and schizophrenia. It contains Quetiapine, which rebalances dopamine and serotonin to improve thinking, mood and behaviour. It may cause common side effects such as dizziness, drowsiness, headache, dry mouth, abnormal muscle movements such as difficulty moving muscles, tremors and muscle stiffness, change in cholesterol levels, weight gain, and decrease in haemoglobin (protein in blood that carries oxygen) levels. Additionally, in children and adolescents, swelling of breasts in boys and girls and production of breast milk (due to an increase in prolactin hormone (helps in producing breast milk) and irregular menstruation can be seen. Please do not stop taking this medicine without your doctor's advice, as it may lead to withdrawal symptoms.

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Composition :

QUETIAPINE-300MG

Manufacturer/Marketer :

Icon Pharma & Surgicals Pvt Ltd

Consume Type :

ORAL

Return Policy :

Not Returnable

Expires on or after :

About QUSER XL 300MG TABLET

QUSER XL 300MG TABLET belongs to a group of medications called ‘antipsychotics’. It is used in the treatment of bipolar depression, mania and schizophrenia. Bipolar disorder is characterized by manic episodes of excitement or euphoria and depression. Schizophrenia is characterized by symptoms of hallucinations (seeing or hearing things that are not real) and delusions (wrong beliefs).

QUSER XL 300MG TABLET contains ‘quetiapine’, which is an antipsychotic drug. It acts by blocking dopamine, a hormone in the brain responsible for developing symptoms of schizophrenia and bipolar disorder. QUSER XL 300MG TABLET also affects other neurotransmitters in the brain, such as serotonin, and its beneficial effects may also be related to this. Altogether  QUSER XL 300MG TABLET rebalances dopamine and serotonin to improve thinking, mood and behaviour.

QUSER XL 300MG TABLET should be taken as prescribed by the doctor. Common side-effects of QUSER XL 300MG TABLET are dizziness, drowsiness, headache, dry mouth, abnormal muscle movements such as difficulty moving muscles, tremors and muscle stiffness,  change in cholesterol levels, weight gain, and decrease in haemoglobin (protein in blood that carries oxygen) levels. Additionally, in children and adolescents, swelling of breasts in boys and girls and production of breast milk (due to an increase in prolactin hormone (helps in producing breast milk)) and irregular menstruation can be seen. Please do not stop taking QUSER XL 300MG TABLET without your doctor’s advice, as it may lead to withdrawal symptoms.

Do not take QUSER XL 300MG TABLET if you are allergic to quetiapine or any other ingredients present in it. Before taking QUSER XL 300MG TABLET, inform your doctor if you have problems associated with the liver, kidney or heart. Also, inform your doctor if you have any sleeping difficulties. It is not recommended for use in children under 18 years of age. Tell your doctor immediately if you develop suicidal thoughts, or your depression worsens after taking QUSER XL 300MG TABLET. QUSER XL 300MG TABLET contains lactose, so it should not be given to people who are intolerant to some sugars. Tell your doctor if you are pregnant or breastfeeding.

Uses of QUSER XL 300MG TABLET

QUSER XL 300MG TABLET is used in the treatment of bipolar depression, mania, schizophrenia. The detailed uses of QUSER XL 300MG TABLET are as follows:<br/>• Bipolar Disorder Management: QUSER XL 300MG TABLET is commonly used to treat the manic and depressive episodes associated with bipolar disorder, helping to stabilize mood and reduce the frequency of mood swings.<br/>• Schizophrenia Treatment: QUSER XL 300MG TABLET is effective in managing symptoms of schizophrenia, such as hallucinations, delusions, and disorganized thinking, enabling patients to function better in daily life.<br/>• Generalized Anxiety Disorder: QUSER XL 300MG TABLET may be prescribed to address symptoms of generalized anxiety disorder, providing relief from excessive worry and tension in patients.<br/>• Adjunctive Therapy for Major Depressive Disorder: In some cases, QUSER XL 300MG TABLET is used as an add-on treatment for individuals who are not adequately responding to traditional antidepressants, helping to alleviate depressive symptoms.<br/>• Insomnia Management: Due to its sedative properties, QUSER XL 300MG TABLET can sometimes be used off-label to treat insomnia, helping patients achieve better sleep quality and duration.<br/>

Directions for Use

• QUSER XL 300MG TABLET can be taken with or without food.• It is usually taken 1-3 times a day at the same time each day or as prescribed by your doctor.• Swallow QUSER XL 300MG TABLET as a whole with a glass of water.• Do not crush, chew, or break it.

Medicinal Benefits

QUSER XL 300MG TABLET contains ‘quetiapine’ that belongs to the class of antipsychotics. It works by blocking the dopamine receptors preventing the excessive activity of dopamine. Dopamine is a ‘feel-good hormone’ that promotes happiness, excitement and pleasure. It alters brain function, improving mood, thinking ability and social behaviour. It reduces the development of symptoms in patients with schizophrenia, bipolar disorder or other mood disorders. QUSER XL 300MG TABLET also has effects on other neurotransmitters in the brain, such as serotonin, and its beneficial effects may also be related to this. Altogether  QUSER XL 300MG TABLET rebalances dopamine and serotonin to improve thinking, mood and behaviour.

How QUSER XL 300MG TABLET Works

QUSER XL 300MG TABLET contains ‘quetiapine’, which is an antipsychotic drug. It acts by blocking dopamine, a hormone in the brain responsible for developing symptoms of schizophrenia and bipolar disorder. QUSER XL 300MG TABLET also affects other neurotransmitters in the brain, such as serotonin, and its beneficial effects may also be related to this. Altogether  QUSER XL 300MG TABLET rebalances dopamine and serotonin to improve thinking, mood and behaviour.

Storage

Keep this medicine out of the sight and reach of children and pets.
Side effects of Quser Xl 300mg Tablet
Here are the 7 steps to manage Dizziness caused by medication:
  • Inform your doctor about dizziness symptoms. They may adjust your medication regimen or prescribe additional medications to manage symptoms.
  • Follow your doctor's instructions for taking medication, and take it at the same time every day to minimize dizziness.
  • When standing up, do so slowly and carefully to avoid sudden dizziness.
  • Avoid making sudden movements, such as turning or bending quickly, which can exacerbate dizziness.
  • Drink plenty of water throughout the day to stay hydrated and help alleviate dizziness symptoms.
  • If you're feeling dizzy, sit or lie down and rest until the dizziness passes.
  • Track when dizziness occurs and any factors that may trigger it, and share this information with your doctor to help manage symptoms.
  • Rest well; get enough sleep.
  • Eat a balanced diet and drink enough water.
  • Manage stress with yoga and meditation.
  • Limit alcohol and caffeine.
  • Physical activities like walking or jogging might help boost energy and make you feel less tired.
  • Stretching and walking are examples of mild exercises that can improve mobility and reduce muscle stiffness.
  • Improving posture, mobility, and muscle coordination through physical therapy can help manage slowness or stiffness.
  • Maintain healthy weight and advance general health depend on eating a balanced diet.
  • Reducing symptoms like tremors or muscle spasms requires adequate sleep and rest.
  • Exercise and a healthy diet can help manage high cholesterol, but consult your doctor about medication if lifestyle changes are not enough.
  • Avoid foods high in cholesterol, saturated fat, and trans fats, such as egg yolks, cheese, fried foods, pastries, ice cream, and red meat.
  • Increase your intake of vegetables, fruits, oats, whole grains, lentils, and beans to boost fibre consumption.
  • Include foods rich in monounsaturated fats, like nuts, avocados, olive oil, and oily fish.
  • Exercise regularly for 30 minutes and maintain a healthy weight.
  • Quit smoking and limit excessive alcohol consumption, as both can negatively impact your cholesterol levels.
  • Eat more plant based foods like vegetables, fruits and whole grains.
  • Reduce intake of foods containing high fat such as dairy, oil and red meat.
  • Exercise for at least 30 minutes 5 days a week.
  • Aim for weight loss and maintain healthy weight.
  • Quit smoking.
  • Control blood sugar and blood pressure.
Here are the steps to cope with constipation as a side effect of medication:
  • Inform your doctor about your constipation symptoms. They may adjust your medication or advise alternative treatments.
  • Stay hydrated by drinking sufficient of water (at least 8-10 glasses a day) to help soften stool and promote bowel movements.
  • Increase fibre intake by eating foods high in fibre, such as fruits, whole grains, vegetables and legumes, to help bulk up the stool.
  • Establish a bowel routine by trying to go to the bathroom at the same time each day to train your bowels.
  • Engaging in regular exercise, like walking or yoga, can support in bowel movement stimulation.
  • Consult your doctor if constipation persists, and discuss alternative treatments or adjustments to your medication.
Here are the steps to Dry Mouth (xerostomia) caused by medication:
  • Inform your doctor about dry mouth symptoms. They may adjust your medication regimen or prescribe additional medications to manage symptoms.
  • Drink plenty of water throughout the day to help keep your mouth moist and alleviate dry mouth symptoms.
  • Chew sugar-free gum or candies to increase saliva production and keep your mouth moisturized.
  • Use saliva substitutes, such as mouthwashes or sprays, only if your doctor advises them to help moisturize your mouth and alleviate dry mouth symptoms.
  • Avoid consuming smoking, alcohol, spicy or acidic foods, and other irritants that may aggravate dry mouth symptoms.
  • Schedule regular dental check-ups to keep track of your oral health and handle any dry mouth issues as they arise.

What if I have taken an overdose of QUSER XL 300MG TABLET

Do not take more than the prescribed dose of QUSER XL 300MG TABLET as it may cause overdose. The symptoms of overdose include dizziness, fainting, drowsiness or fast heartbeat. If you suspect you have taken overdose or notice signs of overdose, please consult a doctor immediately.

Drug Warnings

Do not take QUSER XL 300MG TABLET if you are allergic to quetiapine or any ingredients present in it. Before taking QUSER XL 300MG TABLET, inform your doctor if you have low blood pressure, stroke, liver problems, seizures, diabetes, dementia (memory loss), alcohol or drug abuse, sleep apnea (a sleep disorder) and urinary retention. QUSER XL 300MG TABLET contains lactose, so it should not be given to people with lactose intolerance. Do not abruptly stop taking the medication as it may cause withdrawal symptoms, especially suicidal thoughts in young adults.

Drug-Drug Interactions

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QuetiapineMetoclopramide
Critical
QuetiapineZiprasidone
Critical

Drug-Drug Interactions

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QuetiapineMetoclopramide
Critical
How does the drug interact with Quser Xl 300mg Tablet:
Coadministration of metoclopramide with Quser Xl 300mg Tablet can increase the risk of side effects like uncontrolled movement disorder.

How to manage the interaction:
Taking Metoclopramide with Quser Xl 300mg Tablet is generally avoided as it can possibly result in an interaction. They can be taken together if advised by your doctor. However, contact a doctor if you experience any symptoms like muscle spasms or movements that you can't stop or control, such as lip smacking, chewing, teeth clenching, jaw twitching, blinking, eye-rolling, shaking or jerking of arms and legs, tremor, restlessness, pacing, and foot tapping. Do not stop taking any medications without consulting a doctor.
QuetiapineZiprasidone
Critical
How does the drug interact with Quser Xl 300mg Tablet:
Co-administration of Quser Xl 300mg Tablet with Ziprasidone can increase the risk of irregular heart rhythm.

How to manage the interaction:
Taking Quser Xl 300mg Tablet with Ziprasidone together can possibly result in an interaction, but it can be taken if a doctor has advised it. However, consult a doctor immediately if you experience sudden dizziness, lightheadedness, fainting, shortness of breath, or heart palpitations. Do not discontinue any medications without consulting a doctor.
QuetiapineItraconazole
Severe
How does the drug interact with Quser Xl 300mg Tablet:
Coadministration of Quser Xl 300mg Tablet with itraconazole can significantly increase the blood levels of Quser Xl 300mg Tablet, which may increase the risk of side effects.

How to manage the interaction:
Although there is an interaction between itraconazole and Quser Xl 300mg Tablet, they can be taken together if prescribed by a doctor. However, if you experience dizziness, sleepiness, dry mouth, constipation, increased hunger, or weight gain, contact your doctor immediately. Do not stop using any medications without first talking to your doctor.
QuetiapineBupropion
Severe
How does the drug interact with Quser Xl 300mg Tablet:
Coadministration of Quser Xl 300mg Tablet and bupropion can increase the risk of seizures(fits).

How to manage the interaction:
Co-administration of bupropion along with Quser Xl 300mg Tablet can lead to an interaction, it can be taken if recommended by a doctor. While taking these medications, you should avoid tasks that need mental attention, such as driving or operating dangerous machinery. Do not discontinue any medications without consulting a doctor.
QuetiapineTetrabenazine
Severe
How does the drug interact with Quser Xl 300mg Tablet:
Coadministration of Quser Xl 300mg Tablet with tetrabenazine an increase the risk of an irregular heart rhythm that may be serious.

How to manage the interaction:
Although taking Tetrabenazine and Quser Xl 300mg Tablet together can evidently cause an interaction, it can be taken if your doctor has suggested it. However, consult your doctor if you experience sudden dizziness, lightheadedness, fainting, shortness of breath. Do not discontinue any medications without consulting a doctor.
QuetiapineHaloperidol
Severe
How does the drug interact with Quser Xl 300mg Tablet:
Coadministration of Quser Xl 300mg Tablet and haloperidol can increase the risk or severity of irregular heart rhythms. The risk increases in patients with a history of heart illness or electrolyte imbalance.

How to manage the interaction:
Co-administration of Quser Xl 300mg Tablet and haloperidol can lead to an interaction, but it can be taken if your doctor advises. However, if you experience any symptoms like sudden dizziness, lightheadedness, fainting, shortness of breath, diarrhea, or vomiting, contact your doctor immediately. Do not discontinue any medications without consulting your doctor.
QuetiapineQuinidine
Severe
How does the drug interact with Quser Xl 300mg Tablet:
Coadministration of quinidine with Quser Xl 300mg Tablet can increase the risk of an irregular heart rhythm that may be serious.

How to manage the interaction:
Although there is an interaction between Quser Xl 300mg Tablet and quinidine, they can be taken together if prescribed by a doctor. However, consult your doctor if you experience sudden dizziness, lightheadedness, fainting, shortness of breath. Do not discontinue any medications without consulting a doctor.
QuetiapineMifepristone
Severe
How does the drug interact with Quser Xl 300mg Tablet:
Co-administration of Quser Xl 300mg Tablet with mifepristone can increase the risk of irregular heart rhythm.

How to manage the interaction:
Taking Quser Xl 300mg Tablet with mifepristone together is avoided as it can result in an interaction, it can be taken if a doctor has advised it. However, contact a doctor immediately if you experience any symptoms such as dizziness, lightheadedness, fainting, shortness of breath, or irregular heartbeat. Do not discontinue any medications without consulting a doctor.
QuetiapineMorphine
Severe
How does the drug interact with Quser Xl 300mg Tablet:
Using Morphine together with Quser Xl 300mg Tablet can increase the risk of central nervous system depression (a physiological state that can result in a decreased rate of breathing, decreased heart rate, and loss of consciousness).

How to manage the interaction:
Co-administration of Morphine with Quser Xl 300mg Tablet can result in an interaction, it can be taken if a doctor has advised it. However, if you experience any symptoms like dizziness, drowsiness, difficulty concentrating, and impairment in judgment, contact a doctor immediately. Do not stop using any medications without consulting a doctor.
QuetiapineBexarotene
Severe
How does the drug interact with Quser Xl 300mg Tablet:
Coadministration of Quser Xl 300mg Tablet and bexarotene can increase the risk of pancreatitis (inflammation of the pancreas).

How to manage the interaction:
Taking Quser Xl 300mg Tablet with Bexarotene together can possibly result in an interaction, but it can be taken if your doctor has advised it. However, if you experience nausea, vomiting, abdominal tenderness, and upper abdominal pain, contact your doctor immediately. Do not stop using any medications without talking to your doctor.

Drug-Food Interactions

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No Drug - Food interactions found in our database. Some may be unknown. Consult your doctor for what to avoid during medication.

Drug-Food Interactions

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Diet & Lifestyle Advise

  • Do not take grapefruit or grapefruit juice while using QUSER XL 300MG TABLET as it may alter the effects of the medicine.

  • Avoid intense exercise as it is harder for the body to cool down when it gets very hot. So, drink plenty of fluids and avoid going out in hot weather.

  • Do not take alcohol as it increases drowsiness and also worsens the disease condition. 

  • Eat healthily and keep a check on your weight regularly.

Habit Forming

No

Therapeutic Class

ANTIPSYCHOTICS

QUSER XL 300MG TABLET Substitute

Substitutes safety advice

Product Substitutes

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Alcohol

Unsafe

Alcohol may worsen the condition and increase the risk of side effects while using QUSER XL 300MG TABLET.

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Pregnancy

Caution

QUSER XL 300MG TABLET is a category C medicine. It should be used in pregnant women only when prescribed by a doctor.

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Breast Feeding

Caution

QUSER XL 300MG TABLET should not be given to breastfeeding mothers unless prescribed by a doctor.

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Driving

Caution

QUSER XL 300MG TABLET may cause dizziness. So, it is not recommended to drive or operate heavy machinery when you take QUSER XL 300MG TABLET.

bannner image

Liver

Caution

QUSER XL 300MG TABLET should be used with caution in patients with liver diseases. Dose adjustments may be necessary.

bannner image

Kidney

Caution

QUSER XL 300MG TABLET should be used with caution in patients with kidney diseases. Dose adjustments may be necessary.

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Children

Unsafe

QUSER XL 300MG TABLET is not recommended for use in children under 12 years of age.

Have a query?

FAQs

QUSER XL 300MG TABLET is used in the treatment of bipolar depression, mania and schizophrenia.

QUSER XL 300MG TABLET contains &amp;#039;quetiapine&amp;#039; that works by blocking dopamine receptors in the brain. By inhibiting the synthesis of the dopamine hormone, there will be a decrease in the occurrence of symptoms in patients with schizophrenia and bipolar depression. QUSER XL 300MG TABLET also has effects on other neurotransmitters in the brain, such as serotonin, and its beneficial effects may also be related to this. Altogether QUSER XL 300MG TABLET rebalances dopamine and serotonin to improve thinking, mood and behaviour.

QUSER XL 300MG TABLET increases blood pressure. So, it is advisable to monitor your blood pressure while taking QUSER XL 300MG TABLET frequently.

QUSER XL 300MG TABLET may cause dizziness and may increase the risk of falls. So, stand up slowly when rising from a sitting or lying position.

QUSER XL 300MG TABLET should not drive or operate heavy machinery after taking QUSER XL 300MG TABLET as it causes drowsiness.

The long-term use of QUSER XL 300MG TABLET may cause potential side effects such as tardive dyskinesia (uncontrolled movements of arms and legs), increased blood sugar, vision impairment, and weight gain. However, if the benefits outweigh the risks, your doctor prescribes QUSER XL 300MG TABLET for a prolonged period.

QUSER XL 300MG TABLET is not recommended for use in children and adolescents under the age of 18 years. In children, it may cause potential side effects such as swelling of breasts in boys and girls, irregular periods and weight gain.

Before using this medication, you should inform your doctor about your medical history, including any ongoing medicines, to avoid potential interactions and minimise side effects.

Taking more than the recommended dosage does not provide additional relief and can increase the risk of adverse effects.

QUSER XL 300MG TABLET works by adjusting the balance of neurotransmitters in the brain, which can help alleviate symptoms of mental health conditions such as schizophrenia and bipolar disorder.

No, QUSER XL 300MG TABLET is not a sleeping pill. While it can sometimes cause drowsiness as a side effect, its primary purpose is to treat mental health conditions like schizophrenia and bipolar disorder.

Some people feel better in a few weeks, while others may need a few months. How fast it works depends on the person and their medical condition.

While not specifically designed for anxiety, QUSER XL 300MG TABLET can help to manage anxiety symptoms in some individuals. However, it should only be taken if prescribed by the doctor.

To avoid potential side effects while taking QUSER XL 300MG TABLET, it's essential to be clear of alcohol and grapefruit. Certain medications can also interact with quetiapine, so always consult your doctor before combining them. Remember, quetiapine can cause drowsiness, so exercise caution when driving or operating machinery. And never abruptly stop taking it without consulting your healthcare provider.

Don't stop taking quetiapine without your doctor's approval. Even if you feel better, sticking to your treatment plan is essential. Stopping suddenly can cause withdrawal symptoms and worsen your condition. Your doctor will decide when to reduce or stop your medication based on your specific situation.

QUSER XL 300MG TABLET can lead to weight gain. It's a common side effect, but the amount of weight you gain can vary from person to person. If you're worried about this, talk to your doctor. They can help you manage it and may suggest lifestyle changes or other medications.

Take QUSER XL 300MG TABLET precisely as your doctor prescribes. Your dosage and how often you take it depends on your situation. Follow your doctor's instructions closely to get the best results and reduce side effects.

Common side-effects of QUSER XL 300MG TABLET are dizziness, drowsiness, headache, dry mouth, abnormal muscle movements such as difficulty moving muscles, tremors and muscle stiffness, change in cholesterol levels, weight gain, and decrease in haemoglobin (protein in blood that carries oxygen) levels. Additionally, in children and adolescents, swelling of breasts in boys and girls and production of breast milk (due to an increase in prolactin hormone (helps in producing breast milk)) and irregular menstruation can be seen.

It is essential to tell your doctor about all medications you are taking, including over-the-counter treatments, herbal supplements, and prescription prescriptions. Certain drugs may interact with quetiapine, increasing the risk of adverse effects.

QUSER XL 300MG TABLET can pass into breast milk. Discuss the potential risks and benefits with your doctor if you're breastfeeding.

QUSER XL 300MG TABLET can be taken during pregnancy only if prescribed by the doctor. However, discussing the potential risks and benefits with your doctor is essential.

Yes, QUSER XL 300MG TABLET may cause drowsiness or sedation. This is a common side effect, especially when starting the medication or increasing the dosage.

Yes, QUSER XL 300MG TABLET can interact with alcohol. Consuming alcohol while taking QUSER XL 300MG TABLET can increase the risk of sedation and dizziness.

No, QUSER XL 300MG TABLET is not a controlled substance. However, it is a prescription medication and should only be taken as directed by a healthcare provider.

Take the missed dose as soon as you remember unless it's almost time for your next dose. In this case, skip the missed dose and take your next dose at the regular time. Never take a double dose to make up for a missed one.

Country of origin

INDIA

Manufacturer/Marketer address

Plot No. 128-B, Phase 1 & 2 G.I.D.C., Naroda, Ahmedabad - 382330. (Gujarat)
Other Info - QUS0006

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Author Details

Bayyarapu Mahesh KumarDoctor badge

Written By

Bayyarapu Mahesh Kumar

M Pharmacy

Dr Aneela SiddabathuniDoctor badge

Reviewed By

Dr Aneela Siddabathuni

MPharma., PhD

Last Updated

Jul 18, 2025 | 6:38 AM IST

Doctor imageWe provide you with authentic, trustworthy and relevant information

Reference

  1. https://www.medicines.org.uk/emc/files/pil.4029.pdf
  2. https://medlineplus.gov/druginfo/meds/a698019.html
  3. https://www.drugs.com/drug-interactions/quetiapine.html

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