Pregabalin 300mg Capsules

Manufacturer RISING Active Ingredient Pregabalin Capsules(pre GAB a lin) Pronunciation pre-GAB-a-lin
It is used to help control certain kinds of seizures.It is used to treat painful nerve diseases.It is used to treat fibromyalgia.It may be given to you for other reasons. Talk with the doctor.
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Drug Class
Anticonvulsant; Neuropathic Pain Agent; Fibromyalgia Agent
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Pharmacologic Class
Gamma-aminobutyric acid (GABA) analogue
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Pregnancy Category
Category C
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FDA Approved
Dec 2004
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DEA Schedule
Schedule V

Overview

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What is this medicine?

Pregabalin is a medication that works in your brain to help control seizures, reduce nerve pain (like from diabetes or shingles), and manage fibromyalgia. It's thought to calm overactive nerve signals.
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How to Use This Medicine

Taking Your Medication

To get the most benefit from your medication, follow your doctor's instructions carefully. Read all the information provided with your prescription and follow the instructions closely. You can take this medication with or without food. It's essential to continue taking your medication as directed by your doctor or healthcare provider, even if you start feeling well.

Storing and Disposing of Your Medication

To maintain the quality and safety of your medication, store it in its original container at room temperature. Keep it in a dry place, away from the bathroom. Store your medication in a secure location where children cannot see or reach it, and where others cannot access it. Consider using a locked box or area to keep your medication safe. Remember to keep all medications out of reach of pets.

Missing a Dose

If you miss a dose, take it as soon as you remember. However, if it's close to the time for your next scheduled dose, skip the missed dose and resume your regular dosing schedule. Do not take two doses at the same time or take extra doses to make up for a missed dose.
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Lifestyle & Tips

  • Do not stop taking pregabalin suddenly without talking to your doctor, as this can cause withdrawal symptoms or worsen your condition.
  • Avoid alcohol and other medications that cause drowsiness (like opioids, benzodiazepines, or cold/allergy medicines) while taking pregabalin, as this can increase dizziness, sleepiness, and serious breathing problems.
  • Pregabalin can cause dizziness and sleepiness. Do not drive or operate machinery until you know how this medication affects you.
  • Report any new or worsening mood changes, depression, or thoughts of self-harm to your doctor immediately.
  • Report any swelling in your hands, feet, or face, or unexplained weight gain.
  • Take exactly as prescribed, with or without food.

Dosing & Administration

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Adult Dosing

Standard Dose: Initial dose 75 mg BID or 50 mg TID (150 mg/day), titrated up to 150-300 mg BID or TID (300-600 mg/day) depending on indication and patient response. 300mg capsule is often a single dose within a BID regimen or a total daily dose for some indications.
Dose Range: 150 - 600 mg

Condition-Specific Dosing:

Neuropathic Pain (Diabetic Peripheral Neuropathy): Initial 50 mg TID (150 mg/day), may increase to 100 mg TID (300 mg/day) within 1 week. Max 300 mg TID (600 mg/day).
Neuropathic Pain (Postherpetic Neuralgia): Initial 75 mg BID or 50 mg TID (150 mg/day), may increase to 150 mg BID or 100 mg TID (300 mg/day) within 1 week. Max 300 mg BID (600 mg/day).
Fibromyalgia: Initial 75 mg BID (150 mg/day), may increase to 150 mg BID (300 mg/day) within 1 week. Max 225 mg BID (450 mg/day).
Partial Onset Seizures (Adjunctive Therapy): Initial 75 mg BID or 50 mg TID (150 mg/day), may increase to 150 mg BID or 100 mg TID (300 mg/day) within 1 week. Max 300 mg BID (600 mg/day).
Generalized Anxiety Disorder (Europe/Canada): Initial 150 mg/day, titrated up to 300-600 mg/day.
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Pediatric Dosing

Neonatal: Not established
Infant: Not established
Child: Not established for all indications. For adjunctive therapy of partial onset seizures (â‰Ĩ4 years of age): Initial 3.5 mg/kg/day in 3 divided doses, titrated up to 14 mg/kg/day (max 600 mg/day).
Adolescent: For adjunctive therapy of partial onset seizures (â‰Ĩ4 years of age): Initial 3.5 mg/kg/day in 3 divided doses, titrated up to 14 mg/kg/day (max 600 mg/day).
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Dose Adjustments

Renal Impairment:

Mild: CrCl â‰Ĩ60 mL/min: No adjustment. Max 600 mg/day.
Moderate: CrCl 30-59 mL/min: Initial 75 mg/day (divided BID or TID), Max 300 mg/day.
Severe: CrCl 15-29 mL/min: Initial 25-50 mg/day (single dose or divided BID), Max 150 mg/day.
Dialysis: CrCl <15 mL/min: Initial 25 mg/day (single dose or divided BID), Max 75 mg/day. Administer a supplemental dose (25-100 mg) immediately following each 4-hour hemodialysis session.
Note: Doses should be adjusted based on creatinine clearance (CrCl).

Hepatic Impairment:

Mild: No adjustment
Moderate: No adjustment
Severe: No adjustment

Pharmacology

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Mechanism of Action

Pregabalin binds with high affinity to the alpha2-delta (ι2-δ) subunit of voltage-gated calcium channels in the central nervous system. While the precise mechanism of action is unknown, binding to the ι2-δ subunit is thought to modulate the release of several neurotransmitters, including glutamate, norepinephrine, and substance P, which are involved in pain and seizure activity. This modulation is believed to reduce neuronal excitability.
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Pharmacokinetics

Absorption:

Bioavailability: >90%
Tmax: 1.5 hours (fasted state)
FoodEffect: Food decreases Cmax by 25-30% and prolongs Tmax by approximately 2.5-3 hours, but does not significantly affect the extent of absorption (AUC).

Distribution:

Vd: 0.56 L/kg
ProteinBinding: <1%
CnssPenetration: Yes (readily crosses blood-brain barrier)

Elimination:

HalfLife: 6.3 hours
Clearance: Primarily renal clearance
ExcretionRoute: Renal (urine)
Unchanged: >98%
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Pharmacodynamics

OnsetOfAction: Within 1 week for some indications (e.g., neuropathic pain), but full therapeutic effect may take longer with titration.
PeakEffect: Typically within 1-2 hours after administration.
DurationOfAction: Approximately 8-12 hours (consistent with BID/TID dosing).

Safety & Warnings

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BLACK BOX WARNING

Antiepileptic drugs (AEDs), including Pregabalin, increase the risk of suicidal thoughts or behavior in patients taking these drugs for any indication. Patients treated with any AED for any indication should be monitored for the emergence or worsening of depression, suicidal thoughts or behavior, and/or any unusual changes in mood or behavior. Serious breathing problems may occur when pregabalin is taken with other medicines that can slow breathing, such as opioids, or in people who already have breathing problems, kidney problems, or are elderly.
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Side Effects

Serious 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 or your caregiver 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
Changes in eyesight
Muscle pain or weakness
Changes in balance
Feeling confused
Shakiness
Trouble breathing, slow breathing, or shallow breathing
Blue or gray color of the skin, lips, nail beds, fingers, or toes
Memory problems or loss
Shortness of breath, significant weight gain, or swelling in the arms or legs
Fast or abnormal heartbeat
Fever, chills, or sore throat
Skin sores or any skin changes
Trouble speaking
Trouble sleeping
Trouble walking
Feeling high (excessive laughter and euphoria)
Twitching

If you experience extreme drowsiness, dizziness, or loss of consciousness, seek medical help immediately. Caregivers should also seek medical help right away if the patient is unresponsive, uncommunicative, or unable to wake up.

Suicidal Thoughts or Actions

Like other medications used to treat seizures, this drug may increase the risk of suicidal thoughts or actions, particularly in individuals with a history of suicidal behavior. If you or your caregiver notice any new or worsening symptoms, such as:

Depression
Anxiety, restlessness, or irritability
Panic attacks
Mood or behavioral changes

contact your doctor right away. If suicidal thoughts or actions occur, seek medical help immediately.

Low Platelet Counts

This medication may rarely cause low platelet counts, increasing the risk of bleeding. If you experience unexplained bruising or bleeding, contact your doctor right away.

Other Side Effects

Most people do not experience significant side effects, but some may occur. If you experience any of the following side effects or any other symptoms that bother you or do not resolve, contact your doctor:

Dizziness, drowsiness, tiredness, or weakness
Weight gain
Difficulty concentrating
Headache
Dry mouth
Constipation
Increased appetite
Upset stomach
Joint pain
Nose or throat irritation

These are not all the possible side effects that may occur. 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:

  • Severe allergic reaction (rash, hives, swelling of face/lips/tongue/throat, difficulty breathing)
  • New or worsening depression, anxiety, agitation, or suicidal thoughts/behavior
  • Significant dizziness or extreme sleepiness
  • Unexplained muscle pain, tenderness, or weakness, especially if accompanied by fever or dark urine
  • Blurred vision or other changes in eyesight
  • Significant swelling of hands, feet, or ankles
  • Difficulty breathing or shallow breathing (especially if taking other sedating medications)
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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, its components, or other substances, such as foods or drugs. Be sure to describe the symptoms you experienced.
If you have kidney disease, as this may affect how your body processes the medication.
If you are breastfeeding, as you should not breastfeed while taking this medication.

Additionally, to ensure your safety, it is crucial to discuss all of your:

Prescription and over-the-counter (OTC) medications
Natural products
Vitamins
* Health problems

with your doctor and pharmacist. This will help determine if it is safe to take this medication with your other medications and health conditions. Never start, stop, or change the dose of any medication without first consulting your doctor.
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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.

Before engaging in activities that require alertness or clear vision, such as driving, wait until you understand how this medication affects you.

If you experience changes in the frequency or severity of seizures after starting this medication, consult your doctor promptly.

Do not abruptly stop taking this medication without first consulting your doctor, as this may increase your risk of side effects. If you need to discontinue this medication, your doctor will guide you on how to gradually taper off the dosage.

While taking this medication, avoid consuming alcohol. Additionally, before using marijuana, cannabis products, or prescription and over-the-counter medications that may impair your reactions, discuss the potential risks with your doctor.

A rare but potentially life-threatening reaction called angioedema has been associated with this medication. Symptoms may include swelling of the hands, face, lips, eyes, tongue, or throat, difficulty breathing, swallowing problems, or unusual hoarseness. Seek immediate medical attention if you experience any of these symptoms.

Severe respiratory problems, which can be fatal, have occurred in individuals taking this medication, particularly when combined with opioid pain medications or in those with pre-existing lung or breathing issues. The risk is higher in people over 65 years old. If you have concerns, consult your doctor.

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

Men planning to father a child should discuss the potential risks with their doctor, as this medication has been shown to reduce fertility and cause sperm changes in animal studies, and birth defects have occurred in the offspring of male animals treated with this medication. Although it is unknown whether these effects occur in humans, it is crucial to weigh the benefits and risks.

If you are pregnant or plan to become pregnant, inform your doctor to discuss the benefits and risks of using this medication during pregnancy.
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Overdose Information

Overdose Symptoms:

  • Somnolence
  • Confusion
  • Agitation
  • Restlessness
  • Seizures
  • Coma
  • Respiratory depression

What to Do:

Seek immediate medical attention. Call 911 or Poison Control (1-800-222-1222). There is no specific antidote; treatment is supportive and may include gastric lavage or emesis if recent ingestion. Hemodialysis can remove pregabalin from the system.

Drug Interactions

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Major Interactions

  • Opioids (e.g., oxycodone, hydrocodone, morphine): Increased risk of respiratory depression, sedation, and death.
  • Benzodiazepines (e.g., lorazepam, alprazolam, diazepam): Increased risk of CNS depression (sedation, dizziness, respiratory depression).
  • Other CNS depressants (e.g., alcohol, barbiturates, muscle relaxants, sedatives/hypnotics): Additive CNS depressant effects.
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Moderate Interactions

  • ACE inhibitors (e.g., captopril, enalapril): May enhance peripheral edema and angioedema risk.
  • Thiazolidinediones (e.g., pioglitazone, rosiglitazone): May enhance peripheral edema and weight gain.

Monitoring

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Baseline Monitoring

Renal function (CrCl)

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

Timing: Prior to initiation of therapy.

Mental health history (depression, suicidal ideation)

Rationale: Antiepileptic drugs (AEDs), including pregabalin, carry a risk of suicidal thoughts or behavior.

Timing: Prior to initiation of therapy.

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Routine Monitoring

Efficacy (pain reduction, seizure control, fibromyalgia symptoms)

Frequency: Regularly during titration and maintenance.

Target: Individualized based on patient response and tolerability.

Action Threshold: Lack of efficacy or intolerable side effects may warrant dose adjustment or discontinuation.

Adverse effects (dizziness, somnolence, peripheral edema, weight gain, blurred vision, mood changes)

Frequency: Regularly, especially during titration.

Target: N/A

Action Threshold: Significant or persistent adverse effects may require dose reduction or discontinuation.

Renal function (CrCl)

Frequency: Periodically, especially in elderly patients or those with pre-existing renal impairment.

Target: N/A

Action Threshold: Decline in renal function requires dose adjustment.

Weight

Frequency: Periodically

Target: Maintain stable weight

Action Threshold: Significant or rapid weight gain may indicate fluid retention or other issues.

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Symptom Monitoring

  • Dizziness
  • Somnolence
  • Peripheral edema (swelling of hands/feet)
  • Weight gain
  • Blurred vision or other visual disturbances
  • Difficulty concentrating
  • Mood changes (depression, anxiety, agitation)
  • Suicidal thoughts or behavior
  • Unexplained muscle pain, tenderness, or weakness (rhabdomyolysis)
  • Signs of angioedema (swelling of face, lips, tongue, throat)
  • Signs of hypersensitivity reaction (rash, hives)

Special Patient Groups

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Pregnancy

Pregabalin is Pregnancy Category C. It should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus. There are limited human data, but animal studies have shown developmental toxicity.

Trimester-Specific Risks:

First Trimester: Potential for increased risk of major congenital malformations based on some observational studies, though data are conflicting and require further research.
Second Trimester: Limited data, potential for continued exposure risks.
Third Trimester: Potential for neonatal withdrawal symptoms if discontinued abruptly. Risk of respiratory depression in neonates if exposed near term, especially with concomitant opioid use.
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Lactation

Pregabalin is excreted into human milk. The amount ingested by a breastfed infant is relatively low, but effects on the infant are possible. Use with caution, monitoring the infant for sedation or poor feeding. The American Academy of Pediatrics considers it compatible with breastfeeding.

Infant Risk: Low to moderate risk (L3). Monitor for sedation, poor feeding, or developmental milestones. Consider alternative if infant is premature or has renal impairment.
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Pediatric Use

Approved for adjunctive treatment of partial onset seizures in patients 4 years of age and older. Dosing is weight-based. Safety and efficacy for other indications (neuropathic pain, fibromyalgia) not established in most pediatric age groups.

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Geriatric Use

Dose adjustment is required for elderly patients due to age-related decline in renal function. Elderly patients may be more susceptible to adverse effects such as dizziness, somnolence, and peripheral edema. Increased risk of falls.

Clinical Information

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Clinical Pearls

  • Pregabalin is a Schedule V controlled substance due to potential for abuse and dependence, though lower than Schedule IV or III. Patients should be monitored for signs of abuse.
  • Withdrawal symptoms (insomnia, nausea, headache, anxiety, diarrhea, flu-like symptoms, nervousness, depression, pain, seizures) can occur if discontinued abruptly, especially after long-term use. Taper gradually over at least 1 week.
  • Peripheral edema and weight gain are common side effects. Monitor patients, especially those with pre-existing cardiovascular conditions.
  • Can cause blurred vision or other visual disturbances; these are usually transient and resolve with continued use or dose reduction.
  • Not significantly metabolized by the liver, making it a good option for patients with hepatic impairment.
  • The 300mg capsule is a high single dose; ensure it aligns with the patient's titrated maintenance dose and renal function.
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Alternative Therapies

  • For Neuropathic Pain: Gabapentin, Duloxetine, Venlafaxine, Amitriptyline, Nortriptyline, Carbamazepine (for trigeminal neuralgia).
  • For Fibromyalgia: Duloxetine, Milnacipran, Amitriptyline, Gabapentin.
  • For Partial Onset Seizures: Levetiracetam, Lamotrigine, Carbamazepine, Oxcarbazepine, Valproic Acid, Phenytoin, Topiramate, Lacosamide, Gabapentin.
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Cost & Coverage

Average Cost: $50 - $200 per 30 capsules (300mg)
Generic Available: Yes
Insurance Coverage: Tier 1 (generic) or Tier 2 (preferred brand) on most commercial and Medicare Part D plans.
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General Drug Facts

If your symptoms or health issues persist or worsen, it is essential to contact your doctor promptly. To ensure safe and effective treatment, never share your medication with others or take someone else's medication.

This medication is accompanied by a Medication Guide, a patient fact sheet that provides crucial information. It is vital to read this guide carefully and review it again each time your prescription is refilled. If you have any questions or concerns about this medication, consult your doctor, pharmacist, or other healthcare provider for guidance.

In the event of a suspected overdose, immediately call your local poison control center or seek emergency medical attention. When reporting the incident, be prepared to provide detailed information, including the name of the medication taken, the quantity, and the time it occurred.