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Symbyax

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Symbyax

SYMBYAX
(olanzapine and fluoxetine hydrochloride) Capsules

Symbyax

WARNING

SUICIDAL THOUGHTS AND BEHAVIORS; AND INCREASED MORTALITY IN ELDERLY PATIENTS WITH DEMENTIA-RELATED PSYCHOSIS

Suicidal Thoughts and Behaviors

Antidepressants increased the risk of suicidal thoughts and behavior in children, adolescents, and young adults in short-term studies. These studies did not show an increase in the risk of suicidal thoughts and behavior with antidepressant use in patients over age 24; there was a reduction in risk with antidepressant use in patients aged 65 and older. In patients of all ages who are started onantidepressant therapy, monitor closely for worsening and emergence of suicidal thoughts and behaviors. Advise families and caregivers of the need for close observation and communication with the prescriber. SYMBYAX is not approved for use in children less than 10 years of age [see WARNINGS AND PRECAUTIONS, Use in Specific Populations, and PATIENT INFORMATION].

Increased Mortality in Elderly Patients with Dementia-Related Psychosis

Elderly patients with dementia-related psychosis treated with antipsychotic drugs are at an increased risk of death. Analyses of seventeen placebo-controlled trials (modal duration of 10 weeks), largely in patients taking atypical antipsychotic drugs, revealed a risk of death in drug-treated patients of between 1.6 to 1.7 times the risk of death in placebo-treated patients. Over the course of a typical 10-week controlled trial, the rate of death in drug-treated patients was about 4.5%, compared to a rate of about 2.6% in the placebo group. Although the causes of death were varied, most of the deaths appeared to be either cardiovascular (e.g., heart failure, sudden death) or infectious (e.g., pneumonia) in nature. Observational studies suggest that, similar to atypical antipsychotic drugs, treatment with conventional antipsychotic drugs may increase mortality. The extent to which the findings of increased mortality in observational studies may be attributed to the antipsychotic drug as opposed to some characteristic(s) of the patients is not clear. SYMBYAX (olanzapine and fluoxetine HCl) is not approved for the treatment of patients with dementia-related psychosis [see WARNINGS AND PRECAUTIONS and PATIENT INFORMATION].

DRUG DESCRIPTION

SYMBYAX (olanzapine and fluoxetine HCl capsules) combines an atypical antipsychotic and a selective serotonin reuptake inhibitor, olanzapine (the active ingredient in Zyprexa, and Zyprexa Zydis) and fluoxetine hydrochloride (the active ingredient in Prozac, Prozac Weekly, and Sarafem).

Olanzapine belongs to the thienobenzodiazepine class. The chemical designation is 2-methyl-4-(4-methyl-1piperazinyl)-10H-thieno[2,3-b] [1,5]benzodiazepine. The molecular formula is C17H20N4S, which corresponds to a molecular weight of 312.44.

Fluoxetine hydrochloride is a selective serotonin reuptake inhibitor (SSRI). The chemical designation is (±)-Nmethyl-3-phenyl-3-[(α,α,α-trifluoro-p-tolyl)oxy]propylamine hydrochloride. The molecular formula is C17H18F3NO•HCl, which corresponds to a molecular weight of 345.79.

The chemical structures are:

Olanzapine

Olanzapine Structural Formula Illustration

fluoxetine hydrochloride

Fluoxetine hydrochloride Structural Formula Illustration

Olanzapine is a yellow crystalline solid, which is practically insoluble in water. Fluoxetine hydrochloride is a white to off-white crystalline solid with a solubility of 14 mg/mL in water. SYMBYAX capsules are available for oral administration in the following strength combinations:

  3 mg/25 mg 6 mg/25 mg 6 mg/50 mg 12 mg/25 mg 12 mg/50 mg
olanzapine equivalent 3 6 6 12 12
fluoxetine base equivalent 25 25 50 25 50

Each capsule also contains pregelatinized starch, gelatin, dimethicone, titanium dioxide, sodium lauryl sulfate, edible black ink, red iron oxide, yellow iron oxide, and/or black iron oxide.

What are the possible side effects of fluoxetine and olanzapine (Symbyax)?

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

Report any new or worsening symptoms to your doctor, such as: mood or behavior changes, anxiety, panic attacks, trouble sleeping, or if you feel impulsive, irritable, agitated, hostile, aggressive, restless, hyperactive (mentally or physically), more depressed, or have thoughts about suicide or hurting yourself.

Call your doctor at once if you have a serious side effect such...

Read All Potential Side Effects and See Pictures of Symbyax »

What are the precautions when taking olanzapine and fluoxetine (Symbyax)?

Before taking olanzapine/fluoxetine, tell your doctor or pharmacist if you are allergic to olanzapine or fluoxetine; 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: personal or family history of suicide attempts, breast cancer, intestinal problems (e.g., paralytic ileus, chronic constipation), kidney disease, liver problems, low blood pressure, neuroleptic malignant syndrome, narrow-angle glaucoma, prostate problems, seizures, stomach/intestinal ulcers, brain problems (e.g., dementia, stroke), severe loss of body water (dehydration), low white blood cell...

Read All Potential Precautions of Symbyax »

Last reviewed on RxList: 8/7/2013
This monograph has been modified to include the generic and brand name in many instances.

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Symbyax - User Reviews

Symbyax User Reviews

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Report Problems to the Food and Drug Administration

 

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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