Risperidone ODT 2mg Tablets

Risperidone is a selective monoaminergic antagonist with high affinity for serotonin 5-HT2A and dopamine D2 receptors. It also antagonizes alpha1-adrenergic, alpha2-adrenergic, and histaminergic H1 receptors. Its antipsychotic activity is believed to be mediated through a combination of dopamine D2 and serotonin 5-HT2A receptor antagonism.

Urgent Side Effects: Seek Medical Help Right Away

Although rare, some people may experience severe and potentially life-threatening side effects while taking this medication. If you notice any of the following symptoms, contact your doctor immediately or seek emergency medical attention:

Signs of an allergic reaction, such as:
+ Rash or hives
+ Itching or red, swollen, blistered, or peeling skin (with or without fever)
+ Wheezing or tightness in the chest or throat
+ Difficulty breathing, swallowing, or talking
+ Unusual hoarseness or swelling of the mouth, face, lips, tongue, or throat
Signs of high blood sugar, including:
+ Confusion or feeling sleepy
+ Unusual thirst or hunger
+ Frequent urination or flushing
+ Rapid breathing or breath that smells like fruit
Severe dizziness or fainting
Changes in behavior or mood
Shakiness, difficulty moving, or stiffness
Urination problems (inability to pass urine or changes in urine output)
Difficulty swallowing or speaking
Trouble focusing
Seizures
Changes in vision
Shortness of breath
Drooling
Feeling extremely hot or cold
Hormonal changes, such as:
+ Enlarged breasts or nipple discharge
+ Erectile dysfunction or menstrual changes
+ Decreased sex drive or ejaculation problems
Prolonged or painful erections (lasting more than 4 hours): seek medical attention immediately to prevent long-term sexual dysfunction

Serious but Rare Side Effects

Neuroleptic malignant syndrome (NMS): a potentially life-threatening condition. Seek medical help right away if you experience:
+ Fever
+ Muscle cramps or stiffness
+ Dizziness
+ Severe headache
+ Confusion or changes in thinking
+ Rapid or irregular heartbeat
+ Excessive sweating
Low white blood cell count: increases the risk of infection. Inform your doctor if you have a history of low white blood cell count. Seek medical attention if you experience:
+ Fever
+ Chills
+ Sore throat
Tardive dyskinesia: a severe muscle disorder that may be irreversible. Seek medical help if you experience:
+ Uncontrolled body movements
+ Tongue, face, mouth, or jaw problems (e.g., tongue sticking out, puffing cheeks, mouth puckering, or chewing)

Other Possible Side Effects

While many people may not experience side effects or only have mild ones, it's essential to discuss any concerns with your doctor. If you experience any of the following side effects, contact your doctor or seek medical attention if they bother you or persist:

Weight gain
Restlessness
Dizziness, drowsiness, tiredness, or weakness
Anxiety
Constipation, diarrhea, stomach pain, upset stomach, or vomiting
Heartburn
Dry mouth
Changes in appetite
Common cold symptoms
Headache
Sleep disturbances
Back, muscle, arm, or leg pain

Reporting Side Effects

If you have questions or concerns about side effects, contact your doctor. You can also report side effects to the FDA at 1-800-332-1088 or online at https://www.fda.gov/medwatch.

Before Taking This Medication: Important Information to Share with Your Doctor

It is essential to inform your doctor about the following:

Any allergies you have, including allergies to this medication, any of its components, or other substances, such as foods or drugs. Be sure to describe the allergic reaction you experienced, including any symptoms that occurred.
All medications you are currently taking, including prescription and over-the-counter (OTC) drugs, natural products, and vitamins. This information will help your doctor and pharmacist identify potential interactions between this medication and other substances you are taking.
* Any health problems you have, as this medication may interact with certain conditions.

To ensure your safety, it is crucial to verify that it is safe to take this medication with all your other medications and health conditions. Never start, stop, or change the dose of any medication without first consulting your doctor.

It is essential to inform all your healthcare providers, including doctors, nurses, pharmacists, and dentists, that you are taking this medication.

When starting this medication, be cautious when driving or performing tasks that require your full attention, as it may affect your alertness. To minimize the risk of dizziness or fainting, get up slowly from a sitting or lying position, and be careful when climbing stairs.

You may not experience the full effects of this medication for several weeks. Additionally, be aware that medications like this one have been associated with increased risks of high blood sugar, diabetes, high cholesterol, and weight gain, which may contribute to heart and brain blood vessel disease.

As directed by your doctor, monitor your blood sugar levels regularly. Also, follow your doctor's instructions for having blood work checked, and discuss any concerns or questions you may have with your doctor.

Avoid consuming alcohol while taking this medication. Before using marijuana, cannabis, or any prescription or over-the-counter drugs that may cause drowsiness, consult with your doctor.

In hot weather or during physical activity, be mindful of your fluid intake to prevent dehydration. Drink plenty of fluids to stay hydrated.

This medication may cause dizziness, drowsiness, and impaired balance, which can increase the risk of falls and related injuries, such as fractures.

If you have phenylketonuria (PKU), consult your doctor, as some products contain phenylalanine.

Older adults with dementia who take medications like this one have a higher risk of experiencing strokes, which can be fatal. Note that this medication is not approved for treating dementia-related mental health issues.

If you are 65 or older, use this medication with caution, as you may be more susceptible to side effects.

This medication may affect fertility, but this effect is reversible once the medication is discontinued. If you have concerns, discuss them with your doctor.

Inform your doctor if you are pregnant, plan to become pregnant, or are breastfeeding. It is crucial to discuss the potential benefits and risks of this medication for both you and your baby. Taking this medication during the third trimester of pregnancy may cause side effects or withdrawal symptoms in the newborn.

• CNS depressants (e.g., opioids, benzodiazepines, alcohol): Increased sedation and CNS depression.
• Drugs that prolong QT interval (e.g., Class IA and III antiarrhythmics, moxifloxacin, thioridazine): Increased risk of arrhythmias.
• Dopamine agonists (e.g., levodopa, bromocriptine): Antagonism of effects.
• CYP2D6 inhibitors (e.g., fluoxetine, paroxetine, quinidine): Can increase risperidone plasma levels and active moiety.

• CYP3A4 inducers (e.g., carbamazepine, phenytoin, rifampin): Can decrease risperidone and active moiety plasma levels.
• CYP3A4 inhibitors (e.g., ketoconazole, itraconazole): Can increase risperidone plasma levels.
• Antihypertensives: Enhanced hypotensive effects.
• Diuretics (especially in elderly with dementia): Increased risk of mortality and cerebrovascular events.
• Cimetidine, ranitidine: May increase risperidone bioavailability (minor effect).

• Lithium: No significant pharmacokinetic interaction, but monitor for additive CNS effects.
• Valproate: No significant pharmacokinetic interaction, but monitor for additive CNS effects.

• Sedation/Somnolence
• Dizziness/Orthostatic Hypotension
• Extrapyramidal Symptoms (tremor, rigidity, akathisia, dystonia)
• Tardive Dyskinesia (involuntary movements, especially of face and tongue)
• Weight gain
• Changes in appetite or thirst
• Symptoms of hyperglycemia (increased thirst, urination, hunger)
• Symptoms of hyperprolactinemia (galactorrhea, amenorrhea, gynecomastia, sexual dysfunction)
• Changes in mood or behavior (e.g., agitation, aggression, suicidal ideation)
• Signs of Neuroleptic Malignant Syndrome (fever, muscle rigidity, altered mental status, autonomic instability)
• Signs of cerebrovascular events (sudden weakness, numbness, speech changes, vision changes) in elderly dementia patients

Use during pregnancy only if the potential benefit justifies the potential risk to the fetus. Neonates exposed to antipsychotic drugs during the third trimester of pregnancy are at risk for extrapyramidal and/or withdrawal symptoms following delivery.

Risperidone and its active metabolite are excreted in human breast milk. Weigh the benefits of breastfeeding against the potential risks to the infant. Monitor breastfed infants for sedation, poor feeding, and developmental milestones.

Approved for irritability associated with autistic disorder (5-16 years), schizophrenia (13-17 years), and bipolar mania (10-17 years). Dosing is weight-based and titrated slowly. Monitor closely for weight gain, metabolic changes, and EPS.

Elderly patients, especially those with dementia-related psychosis, are at increased risk of mortality and cerebrovascular adverse events (e.g., stroke, transient ischemic attack). Risperidone is not approved for dementia-related psychosis. Start with lower doses and titrate slowly due to potential for increased sensitivity to side effects (e.g., orthostatic hypotension, sedation, EPS).

• Risperidone ODT should be handled with dry hands and placed on the tongue immediately after opening the blister pack. It dissolves rapidly and can be swallowed with or without liquid.
• Due to the risk of orthostatic hypotension, especially at initiation and during dose escalation, advise patients to rise slowly from a sitting or lying position.
• Monitor for hyperprolactinemia, which can lead to symptoms like galactorrhea, amenorrhea, gynecomastia, and sexual dysfunction. Consider prolactin levels if symptoms arise.
• Be vigilant for metabolic side effects including weight gain, hyperglycemia, and dyslipidemia. Regular monitoring of these parameters is crucial.
• The active metabolite, 9-hydroxyrisperidone (paliperidone), contributes significantly to the drug's effects and has a much longer half-life, influencing dosing frequency and steady-state attainment.
• Patients who are CYP2D6 poor metabolizers may have higher risperidone levels and lower 9-hydroxyrisperidone levels, but the total active moiety generally remains similar, though individual responses may vary.

• Other atypical antipsychotics (e.g., Olanzapine, Quetiapine, Aripiprazole, Ziprasidone, Lurasidone, Cariprazine, Brexpiprazole)
• Typical antipsychotics (e.g., Haloperidol, Chlorpromazine) - generally less preferred due to higher EPS risk
• Mood stabilizers (e.g., Lithium, Valproate, Carbamazepine) for bipolar disorder
• SSRIs/SNRIs for co-occurring anxiety/depression (if appropriate and not primary indication)

If your symptoms or health issues persist or worsen, it's essential to contact your doctor for further guidance. To ensure your safety, never share your medication with others or take someone else's medication. Some medications may come with an additional patient information leaflet, so be sure to check with your pharmacist for more information. If you have any questions or concerns about this medication, don't hesitate to reach out to your doctor, nurse, pharmacist, or other healthcare provider. In the event of a suspected overdose, immediately call your local poison control center or seek medical attention. When seeking help, be prepared to provide details about the overdose, including the medication taken, the amount, and the time it occurred.