Pramipexole ER 2.25mg Tablets

Manufacturer INGENUS PHARMACEUTICALS Active Ingredient Pramipexole Extended-Release Tablets(pra mi PEKS ole) Pronunciation pra mi PEKS ole
It is used to treat Parkinson's disease.It may be given to you for other reasons. Talk with the doctor.
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Drug Class
Antiparkinsonian agent
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Pharmacologic Class
Non-ergot dopamine agonist
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Pregnancy Category
Category C
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FDA Approved
May 2009
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DEA Schedule
Not Controlled

Overview

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What is this medicine?

Pramipexole ER is a medication used to treat Parkinson's disease and Restless Legs Syndrome. It works by acting like a natural chemical in your brain called dopamine, which helps control movement. The 'ER' means extended-release, so you take it once a day, and it releases the medicine slowly over time.
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How to Use This Medicine

Taking Your Medication

To use this medication correctly, follow your doctor's instructions and read all the information provided. Take your medication as directed, with or without food. If you experience stomach upset, taking it with food may help. Continue taking your medication even if you feel well, as instructed by your doctor or healthcare provider. Swallow the medication whole; do not chew, break, or crush it.

Storing and Disposing of Your Medication

Store your medication at room temperature, protected from light, and in a dry place. Avoid storing it in a bathroom. Keep all medications in a safe location, out of the reach of children and pets. Dispose of unused or expired medications properly. Do not flush them down the toilet or pour them down the drain unless instructed to do so. If you have questions about disposing of your medication, consult your pharmacist. You may also want to check if there are drug take-back programs in your area.

Missing a Dose

If you miss a dose, take it as soon as you remember. However, if it has been 12 hours or more since the missed dose, skip it and resume your regular dosing schedule. Do not take two doses at the same time or take extra doses. If you miss taking your medication for several days in a row, contact your doctor before restarting your medication.
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Lifestyle & Tips

  • Take the tablet whole; do not crush, chew, or divide it.
  • Take with or without food, but consistently.
  • Avoid sudden changes in position (e.g., standing up quickly) to reduce dizziness.
  • Avoid alcohol and other sedating medications, as they can increase drowsiness.
  • Do not drive or operate heavy machinery until you know how this medication affects you, especially if you experience sudden sleep attacks or excessive drowsiness.
  • Report any new or worsening compulsive behaviors (e.g., gambling, shopping, eating, sexual urges) to your doctor immediately.

Dosing & Administration

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Adult Dosing

Standard Dose: For Parkinson's Disease: Initial 0.375 mg once daily, titrated gradually. For Restless Legs Syndrome: Initial 0.375 mg once daily, titrated gradually.
Dose Range: 0.375 - 4.5 mg

Condition-Specific Dosing:

Parkinson's Disease: Initial 0.375 mg once daily. Increase by 0.375 mg no more frequently than every 5-7 days. Usual effective dose range: 1.5 mg to 4.5 mg once daily. Maximum dose: 4.5 mg once daily.
Restless Legs Syndrome: Initial 0.375 mg once daily. Increase by 0.375 mg no more frequently than every 4-7 days. Usual effective dose range: 0.375 mg to 2.25 mg once daily. Maximum dose: 2.25 mg once daily.
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Pediatric Dosing

Neonatal: Not established
Infant: Not established
Child: Not established
Adolescent: Not established
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Dose Adjustments

Renal Impairment:

Mild: CrCl 50-80 mL/min: For Parkinson's Disease, no initial dose adjustment. For Restless Legs Syndrome, consider starting at 0.125 mg once daily.
Moderate: CrCl 30-50 mL/min: For Parkinson's Disease, initial 0.25 mg once daily, maximum 2.25 mg once daily. For Restless Legs Syndrome, initial 0.125 mg once daily, maximum 1.125 mg once daily.
Severe: CrCl < 30 mL/min: For Parkinson's Disease, initial 0.125 mg once daily, maximum 1.5 mg once daily. For Restless Legs Syndrome, not recommended.
Dialysis: Not recommended due to insufficient data and primary renal excretion.

Hepatic Impairment:

Mild: No adjustment necessary.
Moderate: No adjustment necessary.
Severe: No adjustment necessary.

Pharmacology

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Mechanism of Action

Pramipexole is a non-ergot dopamine agonist with high affinity and selectivity for the D2 subfamily of dopamine receptors, particularly D2 and D3 receptor subtypes. It is believed to exert its therapeutic effects by stimulating dopamine receptors in the striatum, thereby mimicking the effects of dopamine in the brain.
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Pharmacokinetics

Absorption:

Bioavailability: >90%
Tmax: Approximately 6 hours (extended-release)
FoodEffect: Food does not affect the extent of absorption, but Tmax may be prolonged by approximately 1 hour.

Distribution:

Vd: Approximately 400 L
ProteinBinding: <20%
CnssPenetration: Yes

Elimination:

HalfLife: Approximately 8-12 hours (increases with age and renal impairment)
Clearance: Approximately 400 mL/min (renal clearance)
ExcretionRoute: Primarily renal (approximately 90% of the dose is excreted unchanged in urine)
Unchanged: Approximately 90%
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Pharmacodynamics

OnsetOfAction: Gradual, typically weeks for full therapeutic effect in Parkinson's disease due to titration.
PeakEffect: Not precisely defined for chronic use, but plasma concentrations reach steady state within 5 days of dosing.
DurationOfAction: 24 hours (extended-release formulation)

Safety & Warnings

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Side Effects

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 or seek medical attention immediately:

Signs of an allergic reaction, such as:
+ Rash
+ Hives
+ Itching
+ Red, swollen, blistered, or peeling skin with or without fever
+ Wheezing
+ Tightness in the chest or throat
+ Trouble breathing, swallowing, or talking
+ Unusual hoarseness
+ Swelling of the mouth, face, lips, tongue, or throat
Strong, uncontrollable urges (e.g., eating, gambling, sex, or spending money)
Fever
Confusion
Muscle stiffness
Increased urination
Severe dizziness or fainting
Excessive sweating
Shortness of breath, significant weight gain, or swelling in the arms or legs
Changes in vision
New or worsening trouble controlling body movements
Difficulty moving around
Hallucinations (seeing or hearing things that are not there)
Memory problems or loss
Muscle pain or weakness, dark urine, or difficulty urinating
New or worsening mental, mood, or behavior changes

Important Warnings

Some people have experienced sudden, uncontrolled sleep episodes while taking this medication, even when they felt alert beforehand. This can occur up to 1 year after starting the medication. If you fall asleep during activities, such as driving, eating, or talking, do not drive or engage in tasks that require alertness. Contact your doctor immediately if this happens or if you feel extremely sleepy.

Additionally, some people have developed uncontrolled changes in posture, such as neck bending forward, bending forward at the waist, or tilting sideways when sitting, standing, or walking. These changes can occur several months after starting the medication or after a dose increase. If you notice any changes in your posture, contact your doctor.

Neuroleptic Malignant Syndrome (NMS)

NMS is a rare but potentially life-threatening condition that can occur when medications like this one are stopped suddenly or when the dose is lowered. If you experience any of the following symptoms, contact your doctor immediately:

Fever
Muscle cramps or stiffness
Dizziness
Severe headache
Confusion
Changes in thinking
Fast or abnormal heartbeat
Excessive sweating

Other Possible Side Effects

Like all medications, this drug can cause side effects. Many people experience no side effects or only mild ones. However, if you notice any of the following side effects or if they bother you or do not go away, contact your doctor:

Headache
Constipation
Diarrhea
Upset stomach
Decreased appetite
Trouble sleeping
Dizziness
Sleepiness
Fatigue
Weakness
Dry mouth
Strange or unusual dreams
Muscle spasms
Weight loss
Stuffy nose
Flu-like symptoms

This is not an exhaustive list of possible 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.
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Seek Immediate Medical Attention If You Experience:

  • Sudden onset of sleep during daily activities (even without warning)
  • Hallucinations (seeing or hearing things that are not real)
  • Unusual urges or behaviors (e.g., compulsive gambling, increased sexual urges, uncontrolled shopping, binge eating)
  • Dizziness or fainting, especially when standing up
  • Swelling in the legs or ankles
  • Uncontrolled, involuntary movements (dyskinesia)
  • Confusion or disorientation
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Before Using This Medicine

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.
If you have kidney disease, as this may affect how your body processes the medication.
* If you are currently taking any other medications that contain the same active ingredient as this drug, to avoid potential interactions or duplication of therapy.

This list is not exhaustive, and it is crucial to discuss all of your medications, including prescription and over-the-counter drugs, natural products, and vitamins, with your doctor and pharmacist. They will help you determine if it is safe to take this medication in combination with your other medications and health conditions.

Remember, do not start, stop, or change the dose of any medication without first consulting your doctor to ensure your safety and the effectiveness of your treatment plan.
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Precautions & Cautions

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 performing tasks that require alertness, such as driving, until you understand how it affects you. To minimize the risk of dizziness or fainting, stand up slowly after sitting or lying down, and exercise caution when navigating stairs.

Follow your doctor's instructions for monitoring your blood pressure. Do not discontinue this medication without consulting your doctor, as stopping it abruptly may lead to withdrawal symptoms. If you need to stop taking this medication, follow the tapering schedule recommended by your doctor. Immediately contact your doctor if you experience any of the following symptoms when reducing the dose or stopping the medication: fever, confusion, severe muscle stiffness, apathy, anxiety, depression, fatigue, sleep disturbances, sweating, or pain.

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

If you notice what appears to be a tablet in your stool, discuss this with your doctor.

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

If you are pregnant, plan to become pregnant, or are breastfeeding, inform your doctor. You and your doctor will need to discuss the potential benefits and risks of this medication to both you and your baby.
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Overdose Information

Overdose Symptoms:

  • Nausea
  • Vomiting
  • Dizziness
  • Somnolence
  • Orthostatic hypotension
  • Dyskinesia
  • Agitation
  • Confusion
  • Hallucinations

What to Do:

Call 911 or your local poison control center (e.g., 1-800-222-1222 in the US) immediately. General supportive measures are indicated. There is no known antidote. Gastric lavage may be considered if ingestion is recent. Maintain blood pressure and provide intravenous fluids if hypotension occurs.

Drug Interactions

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Major Interactions

  • Dopamine antagonists (e.g., antipsychotics like haloperidol, phenothiazines, butyrophenones, thioxanthenes; metoclopramide): May reduce the efficacy of pramipexole.
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Moderate Interactions

  • Cimetidine, Ranitidine, Quinidine, Quinine, Diltiazem, Verapamil, Triamterene, Trimethoprim: Drugs eliminated by renal tubular secretion may decrease the oral clearance of pramipexole, leading to increased plasma levels.
  • Sedatives, Alcohol, other CNS depressants: May potentiate the sedative effects of pramipexole.

Monitoring

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Baseline Monitoring

Renal function (CrCl)

Rationale: Pramipexole is primarily renally excreted; dose adjustments are necessary in renal impairment.

Timing: Prior to initiation of therapy.

Blood pressure (orthostatic)

Rationale: To assess for baseline orthostatic hypotension risk.

Timing: Prior to initiation of therapy.

Psychiatric history (e.g., impulse control disorders, psychosis)

Rationale: To identify predisposition to adverse psychiatric effects.

Timing: Prior to initiation of therapy.

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Routine Monitoring

Blood pressure (orthostatic)

Frequency: Regularly, especially during dose titration and if symptoms of orthostasis occur.

Target: Maintain within patient's normal limits, minimize symptomatic drops.

Action Threshold: Symptomatic orthostatic hypotension or significant sustained drops (e.g., >20 mmHg systolic, >10 mmHg diastolic) warrant dose reduction or discontinuation.

Mental status (hallucinations, confusion, impulse control disorders)

Frequency: At each visit, or as symptoms arise.

Target: Absence of new or worsening psychiatric symptoms.

Action Threshold: Development of hallucinations, confusion, or compulsive behaviors (e.g., gambling, hypersexuality, binge eating) requires dose reduction or discontinuation.

Somnolence/Sleep attacks

Frequency: At each visit, or as symptoms arise.

Target: Absence of excessive daytime sleepiness or sudden sleep onset.

Action Threshold: Significant somnolence or sudden sleep attacks warrant dose reduction or discontinuation, and patient counseling regarding driving/operating machinery.

Motor symptoms (dyskinesia, efficacy)

Frequency: At each visit.

Target: Optimal control of Parkinson's symptoms with minimal dyskinesia.

Action Threshold: Worsening dyskinesia may require dose adjustment of pramipexole or levodopa. Lack of efficacy may warrant dose increase or alternative therapy.

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Symptom Monitoring

  • Orthostatic hypotension (dizziness, lightheadedness upon standing)
  • Excessive daytime sleepiness or sudden onset of sleep
  • Hallucinations (visual, auditory)
  • Confusion or disorientation
  • Impulse control disorders (e.g., pathological gambling, hypersexuality, compulsive shopping, binge eating)
  • Dyskinesia (involuntary movements)
  • Nausea, constipation
  • Peripheral edema

Special Patient Groups

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Pregnancy

Category C. Use during pregnancy only if the potential benefit justifies the potential risk to the fetus. Animal studies have shown adverse effects, but there are no adequate and well-controlled studies in pregnant women.

Trimester-Specific Risks:

First Trimester: Potential for developmental toxicity observed in animal studies at doses higher than human therapeutic doses.
Second Trimester: Potential for developmental toxicity observed in animal studies at doses higher than human therapeutic doses.
Third Trimester: Potential for developmental toxicity observed in animal studies at doses higher than human therapeutic doses. Risk of lactation inhibition.
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Lactation

Pramipexole is excreted in rat milk and is expected to be excreted in human milk. It may inhibit lactation due to its dopamine agonist activity. Given the potential for serious adverse effects in a breastfed infant, a decision should be made whether to discontinue nursing or to discontinue the drug, taking into account the importance of the drug to the mother.

Infant Risk: High risk. Potential for central nervous system effects (e.g., somnolence, motor effects) and inhibition of lactation.
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Pediatric Use

Safety and effectiveness in pediatric patients have not been established. Not indicated for use in pediatric populations.

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Geriatric Use

Elderly patients (â‰Ĩ65 years) have a higher incidence of hallucinations, orthostatic hypotension, and somnolence compared to younger adults. Renal clearance of pramipexole decreases with age, necessitating careful dose titration and monitoring, especially in those with impaired renal function.

Clinical Information

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Clinical Pearls

  • Pramipexole ER should be swallowed whole and not crushed, chewed, or divided, as this can lead to rapid release of the drug and increased side effects.
  • Patients should be warned about the potential for sudden onset of sleep during daily activities, even without prior warning or feeling drowsy. This risk is higher with higher doses and in patients also taking other sedating medications or alcohol.
  • Impulse control disorders (e.g., pathological gambling, hypersexuality, compulsive shopping, binge eating) can develop or worsen with dopamine agonist therapy. Patients and caregivers should be specifically questioned about these behaviors.
  • Orthostatic hypotension is a common side effect, especially during initial titration. Advise patients to rise slowly from a sitting or lying position.
  • Hallucinations are more common in elderly patients and those with advanced Parkinson's disease. They can be dose-related and may require dose reduction or discontinuation.
  • For patients switching from immediate-release pramipexole to extended-release, the total daily dose should be the same, but the ER formulation is taken once daily.
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Alternative Therapies

  • Other dopamine agonists (e.g., ropinirole, rotigotine, bromocriptine)
  • Levodopa/carbidopa (for Parkinson's disease)
  • MAO-B inhibitors (e.g., selegiline, rasagiline, safinamide)
  • COMT inhibitors (e.g., entacapone, opicapone)
  • Amantadine
  • Anticholinergics (for tremor)
  • Non-pharmacological treatments for RLS (e.g., lifestyle modifications, iron supplementation if deficient)
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Cost & Coverage

Average Cost: Varies widely, typically $100-$500+ per 30 tablets
Generic Available: Yes
Insurance Coverage: Tier 2 or Tier 3 (preferred or non-preferred brand/generic)
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General Drug Facts

If your symptoms or health issues persist or worsen, it is 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 it's a good idea 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 medication, including the amount taken and the time it happened, to facilitate prompt and effective treatment.