May 27, 2017
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(iloperidone) Tablets



DEMENTIA-RELATED PSYCHOSIS Elderly patients with dementia-related psychosis treated with antipsychotic drugs are at an increased risk of death. FANAPT is not approved for the treatment of patients with dementia-related psychosis [see WARNINGS AND PRECAUTIONS].


FANAPT is an atypical antipsychotic belonging to the chemical class of piperidinyl-benzisoxazole derivatives. Its chemical name is 4'-[3-[4-(6-Fluoro-1,2-benzisoxazol-3-yl)piperidino]propoxy]-3'-methoxyacetophenone. Its molecular formula is C24H27FN2O4 and its molecular weight is 426.48. The structural formula is:

FANAPT® (iloperidone) Structural Formula Illustration

Iloperidone is a white to off-white finely crystalline powder. It is practically insoluble in water, very slightly soluble in 0.1 N HCl and freely soluble in chloroform, ethanol, methanol, and acetonitrile.

FANAPT tablets are intended for oral administration only. Each round, uncoated tablet contains 1 mg, 2 mg, 4 mg, 6 mg, 8 mg, 10 mg, or 12 mg of iloperidone. Inactive ingredients are: lactose monohydrate, microcrystalline cellulose, hydroxypropylmethylcellulose, crospovidone, magnesium stearate, colloidal silicon dioxide, and purified water (removed during processing). The tablets are white, round, flat, beveled-edged and identified with a logo “FANAPT® (iloperidone) Structural Formula Illustration” debossed on one side and tablet strength “1”, “2”, “4”, “6”, “8”, “10”, or “12” debossed on the other side.

What are the possible side effects of iloperidone (Fanapt)?

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Stop taking this medication and call your doctor at once if you have a serious side effect such as:

  • headache with chest pain and severe dizziness, fainting, fast or pounding heartbeats;
  • very stiff (rigid) muscles, high fever, sweating, confusion, fast or uneven heartbeats, tremors, feeling like you might pass out;
  • twitching or uncontrollable movements of your eyes, lips, tongue, face, arms, or...

Read All Potential Side Effects and See Pictures of Fanapt »

What are the precautions when taking iloperidone tablets (Fanapt)?

See also Warning section.

Before taking iloperidone, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

Before using this medication, tell your doctor or pharmacist your medical history, especially of: liver problems, heart problems (such as past heart attack, chest pain, abnormal heartbeat), stroke, diabetes (including family history), obesity, low blood pressure, seizures, low white blood cell count, loss of too much body water (dehydration), breast cancer, dementia (such as Alzheimer's Disease), trouble swallowing.

Iloperidone may cause a condition that affects the heart rhythm...

Read All Potential Precautions of Fanapt »

Last reviewed on RxList: 3/21/2017
This monograph has been modified to include the generic and brand name in many instances.

Fanapt - User Reviews

Fanapt User Reviews

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Here is a collection of user reviews for the medication Fanapt sorted by most helpful. Patient Discussions FAQs

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You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

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