Compare Clozaril vs. Seroquel

Head-to-head comparisons of medication uses, side effects, ratings, and more.

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Clozaril (Clozapine)

Prescription only

Seroquel (quetiapine)

Prescription only
Helps control your thoughts and actions.

Clozaril (Clozapine) treats schizophrenia when other drugs haven't worked, but you'll have to get blood work done regularly and might gain weight.

Helps control your thoughts and mood.

Seroquel (quetiapine) is a effective at treating schizophrenia, mania, and depression but it can cause weight gain and high blood glucose levels.

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3.7/ 5 average rating with 250 reviewsforSeroquel
Upsides
  • Clinical studies show that Clozaril (Clozapine) is effective in treating schizophrenia when other medications have failed.
  • Has the lowest risk of causing movement problems when compared to other antipsychotic medicines.
  • Clozaril (Clozapine) is available as a normal tablet and as a mint-flavored tablet that dissolves on the tongue without water.
  • Available as a generic, which is cheaper.
  • Seroquel (quetiapine) is effective at relieving psychotic symptoms and manic episodes.
  • Seroquel (quetiapine) has fewer side effects than most antipsychotic medications.
  • Seroquel (quetiapine) is less likely to cause heart problems compared to some other antipsychotics.
  • Seroquel (quetiapine) is also the least likely to cause Extrapyramidal Symptoms (EPS) – a movement disorder that causes stiffness, tremor, restlessness, and slow, repetitive, or involuntary movements.
Downsides
  • You need to get blood work done every time you can get a prescription filled for Clozaril (Clozapine).
  • You can only get Clozaril (Clozapine) at certain pharmacies that are registered to provide it.
  • If you don't get Clozaril (Clozapine) within 7 days of it being ready at the pharmacy, then you have to get blood work done again and get a new prescription from your doctor.
  • You need to limit the amount of alcohol you drink while on Clozaril (Clozapine).
  • Seroquel (quetiapine) has a moderate to high risk of weight gain, elevated cholesterol and/or blood sugar compared to other antipsychotics.
  • You might need routine blood tests to check how Seroquel (quetiapine) is affecting your body.
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Used for
Dosage forms
  • Pill
  • Dissolving tablet
  • Liquid
  • Pill
  • Extended release
Price
Lowest price
$774.00
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Lowest price
$40.15
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Reviews
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250 reviews so far
56%
saidit'sworth it
50%
saiditworked well
27%
saidit'sa big hassle

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Side effects
33possible side effects
  • Drowsiness/Sedation
    39%
  • Salivation
    31%
  • Tachycardia
    25%
  • Dizziness/Vertigo
    19%
  • Constipation
    14%
  • Hypotension
    9%
  • Headache
    7%
  • Tremor
    6%
  • Syncope
    6%
  • Sweating
    6%
  • Dry Mouth
    6%
  • Nausea
    5%
  • Visual Disturbances
    5%
  • Fever
    5%
  • Disturbed Sleep/Nightmares
    4%
  • Restlessness
    4%
  • Hypokinesia/Akinesia
    4%
  • Agitation
    4%
  • Hypertension
    4%
  • Abdominal Discomfort/Heartburn
    4%
  • Weight Gain
    4%
  • Seizures (convulsions)
    3%
  • Rigidity
    3%
  • Akathisia
    3%
  • Confusion
    3%
  • Nausea/Vomiting
    3%
  • Vomiting
    3%
  • Leukopenia/Decreased WBC/Neutropenia
    3%
  • Fatigue
    2%
  • Insomnia
    2%
  • Diarrhea
    2%
  • Urinary Abnormalities
    2%
  • Rash
    2%
See more detailed side effects
36possible side effects
  • Drowsiness
    34%
  • Dry mouth
    19%
  • Headache
    17%
  • Weakness
    10%
  • Constipation
    10%
  • Dizziness
    9%
  • Tremor
    8%
  • Stomach pain
    7%
  • Low blood pressure
    7%
  • Agitation
    6%
  • Weight gain
    6%
  • Sore throat
    6%
  • Back pain
    5%
  • Stiffness/difficulty moving
    4%
  • Hay fever
    4%
  • Swelling in the limbs
    4%
  • Twitching
    4%
  • Indigestion
    4%
  • Depression
    3%
  • Lazy eye
    3%
  • Speech disorder
    3%
  • Altered hormone levels
    3%
  • Heaviness
    2%
  • Infection
    2%
  • Fever
    2%
  • High blood pressure
    2%
  • Increased heart rate
    2%
  • Increased appetite
    2%
  • Hypothyroidism
    2%
  • Incoordination
    2%
  • Abnormal thinking
    2%
  • Anxiety
    2%
  • Loss of control of movements
    2%
  • Sinus infection
    2%
  • Sweating
    2%
  • Urinary Tract Infection
    2%
See more detailed side effects
Risks and risk factors
  • Fewer white blood cells
  • Low blood pressure | Slow heartbeat | Fainting
    • Dehydration
    • Taking blood pressure medications
  • Seizures
    • Seizure disorder
    • Alcohol abuse
  • Heart problems
    • History of heart problems
  • Increased risk of death
    • Over 65 and having dementia
  • Weight gain
  • Increased blood sugar
    • Diabetes
  • Increased cholesterol
  • Neuroleptic malignant syndrome (NMS)
  • Tardive dyskinesia
  • Return of schizophrenic symptoms
    • Stopping Clozaril (Clozapine) suddenly
See more detailed risks and warnings
  • Higher risk of death
    • Elderly patients with dementia-related psychosis
  • Suicidal thoughts or behavior
    • Children, adolescents, and young adults (<24 years old)
  • Neuroleptic malignant syndrome
  • Heart problems
    • History of heart problems
    • Drug interactions
  • Extrapyramidal Symptoms (EPS)
  • Metabolic changes (increased blood sugar, high cholesterol and weight gain)
    • People with diabetes
    • People with high cholesterol
See more detailed risks and warnings
Learn more about Clozaril (Clozapine)
Learn more about Seroquel (quetiapine)