Generic Name: Quetiapine Fumarate (kwe-TYE-a-peen)

Drug Class: Antipsychotic, dibenzothiazeprine derivatives


Drug Uses

This medicine is used to treat psychotic disorders. Your doctor may use this medicine to treat other conditions as well.

General Information

This information is for educational purposes only. Not every known side effect, adverse effect, or drug interaction is in this database. If you have questions about your medicines, talk to your health care provider.

How it Works

This medicine effects certain chemicals in the brain called "neurotransmitters". These neurotransmitters are known to affect behavior and mood.

How to Take It

Take this medicine exactly as directed by your healthcare provider. AVOID EATING grapefruit or grapefruit juice while taking this medicine.

Possible Side Effects

    • This medicine may cause the following side effects:
      • drowsiness
      • dizziness
      • constipation
      • dry mouth
    • See a doctor immediately if you experience:
      • unexplained fever
      • extreme muscle stiffness
      • uncontrolled muscle movements (e.g.
      • tongue or face)
      • vision changes
      • irregular or fast heartbeat
      • sweating
      • change in alertness
    • If you experience other bothersome side effects, contact your health care provider.


    • Before using this medicine, tell your doctor if you have had an allergy to this medicine in the past.

    • Do NOT abruptly stop this medicine without talking to your doctor.

    • This medicine may cause dizziness or drowsiness.

    • Alcoholic beverages can increase the effects of this medicine and should be avoided.

    • Avoid getting overheated and drink plenty of fluids when exposed to warm temperatures.

    • Be cautious when sitting up too quickly from a lying down position, especially in the first 3-5 days of treatment or when the doctor increases your dose.


    • Seek medical attention immediately. For non emergencies, contact your local or regional poison control center at 1-800-222-1222.

Drug Interactions

    • Let your doctor, nurse of pharmacist know about all the medications that you are taking, either by prescription or over-the-counter, including herbal supplements.

    • Tell your doctor if you are taking any of the following medications:
      • amantadine (Symmetrel)
      • barbiturates
      • bromocriptine (Parlodel)
      • carbamazapine (Tegretol)
      • cimetidine (Tagamet Tagamet HB)
      • erythromycin
      • fluconazole (Diflucan)
      • cortisone-like drugs (prednisone; hydrocortisone)
      • itraconazole (Sporanox)
      • ketoconazole (Nizoral)
      • levodopa (Sinemet)
      • lorazepam (Ativan)
      • medications for high blood pressure
      • pergolide (Permax)
      • phenytoin (Dilantin)
      • pramipexole (Mirapex)
      • rifampin (Rifadin)
      • selegiline (Eldepryl)
      • thioridazine (Mellaril)
      • vitamins

Missed Dose

Take your next dose as soon as you remember. If it is time for your next dose, skip the missed dose and go back to your regular schedule. Do not double doses.


Keep this medication in the container it came in, tightly closed, and out of reach of children. Store it at room temperature, 20-25 degrees (68-77 F) and away from excess heat and moisture (not in the bathroom). Throw away any medication that is outdated or no longer needed.


Notify your doctor if you think you are pregnant or plan to become pregnant while taking this medicine. Do NOT take this medicine if your are breastfeeding. Talk to your doctor or pediatrician for more information.

More Information

For more information, talk to your doctor, pharmacist or health care provider.

Last reviewed: By John M. Grohol, Psy.D. on 19 May 2015
    Published on All rights reserved.