Fentanyl Cit 200mcg Oral Transmcsl

Manufacturer MALLINCKRODT PHARM Active Ingredient Fentanyl Lozenge(FEN ta nil) Pronunciation FEN ta nil
WARNING: This is an opioid drug. Opioid drugs can put you at risk for drug use disorder. These can lead to overdose and death. You will be watched closely while taking this drug.Severe breathing problems may happen with this drug. The risk is highest when you first start taking this drug or any time your dose is raised. These breathing problems can be deadly. Call your doctor right away if you have slow, shallow, or trouble breathing. Even one dose of this drug may be deadly if it is taken by someone else or by accident, especially in children. If this drug is taken by someone else or by accident, get medical help right away.Keep all drugs in a safe place. Keep all drugs out of the reach of children and pets.Severe side effects have happened when opioid drugs were used with benzodiazepines, alcohol, marijuana, other forms of cannabis, or street drugs. This includes severe drowsiness, breathing problems, and death. Benzodiazepines include drugs like alprazolam, diazepam, and lorazepam. If you have questions, talk with the doctor.Many drugs interact with this drug and can raise the chance of side effects like deadly breathing problems. Talk with your doctor and pharmacist to make sure it is safe to use this drug with all of your drugs.Get medical help right away if you feel very sleepy, very dizzy, or if you pass out. Caregivers or others need to get medical help right away if the patient does not respond, does not answer or react like normal, or will not wake up.If you are pregnant or plan to get pregnant, talk with your doctor right away about the benefits and risks of using this drug during pregnancy. Using this drug for a long time during pregnancy may lead to withdrawal in the newborn baby. Withdrawal in the newborn can be life-threatening if not treated. @ COMMON USES: It is used to manage pain.This drug is not for mild pain or pain that only lasts a short time (like headaches, toothaches, or pain after surgery).This drug is only for use by people who have been taking pain drugs (opioids) and are used to their effects. Talk with the doctor.
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Drug Class
Opioid analgesic
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Pharmacologic Class
Opioid agonist
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Pregnancy Category
Category C
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FDA Approved
Jul 1998
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DEA Schedule
Schedule II

Overview

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What is this medicine?

Fentanyl lozenge is a very strong pain medicine used only for breakthrough cancer pain in patients who are already taking other opioid pain medicines regularly. It is designed to dissolve in your mouth to quickly relieve sudden, severe pain. It is not for pain that is not cancer-related, or for patients who are not already tolerant to opioids.
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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. Place the lozenge in your mouth between your cheek and lower gum, and gently move it from side to side using the handle. Suck on the oral lozenge without chewing, breaking, or crushing it, and do not swallow it whole. After taking a dose, dispose of the handle in the trash, out of reach of children and pets. If any medication remains on the handle, rinse it with hot water before discarding to ensure the medication is fully dissolved.

Storing and Disposing of Your Medication

Store this medication at room temperature in a dry place, avoiding bathrooms. Keep it in a secure location where children cannot see or access it, and where others cannot easily obtain it. Consider using a locked box or area to safeguard the medication. Keep all medications away from 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 medications, consult your pharmacist, who may be aware of drug take-back programs in your area.

Missing a Dose

If you take this medication regularly, take a missed dose as soon as you remember. However, if it is close to the time for your next dose, skip the missed dose and resume your regular schedule. Do not take two doses at the same time or take extra doses. If you take this medication as needed, do not take it more frequently than directed by your doctor.
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Lifestyle & Tips

  • Do not drive or operate heavy machinery until you know how this medicine affects you, as it can cause drowsiness and dizziness.
  • Avoid alcohol and other medicines that make you sleepy, as this can increase the risk of serious breathing problems.
  • Store this medicine securely out of reach of children and pets, preferably in a locked cabinet, as accidental ingestion can be fatal.
  • Do not cut, chew, or crush the lozenge; allow it to dissolve slowly in your mouth.
  • Dispose of unused or expired lozenges properly by flushing them down the toilet or using a drug take-back program, as per the instructions in the medication guide.

Dosing & Administration

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Adult Dosing

Standard Dose: Initial dose of 200 mcg for breakthrough cancer pain (BTCP) in opioid-tolerant patients. Titrate upwards in 200 mcg increments as needed to achieve adequate analgesia with tolerable side effects. Only one lozenge per BTCP episode. Wait at least 4 hours before treating another episode with the same dose.
Dose Range: 200 - 1600 mg

Condition-Specific Dosing:

breakthrough_cancer_pain: Individualized titration required. Start at 200 mcg for opioid-tolerant patients. Administer one unit per episode, allowing 15 minutes for full effect. If pain persists, a second unit of the same dose may be administered 15 minutes after the first. Limit to 2 units per episode. Do not treat more than 4 episodes per day. Wait at least 4 hours between doses of the same strength.
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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: Use with caution; monitor for increased opioid effects. Consider lower starting dose and slower titration.
Moderate: Use with caution; monitor for increased opioid effects. Consider lower starting dose and slower titration.
Severe: Use with caution; monitor for increased opioid effects. Consider lower starting dose and slower titration.
Dialysis: Not well studied. Fentanyl is not significantly dialyzable. Monitor closely for prolonged effects.

Hepatic Impairment:

Mild: Use with caution; monitor for increased opioid effects. Consider lower starting dose and slower titration.
Moderate: Use with caution; monitor for increased opioid effects. Consider lower starting dose and slower titration.
Severe: Use with caution; monitor for increased opioid effects. Consider lower starting dose and slower titration.

Pharmacology

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Mechanism of Action

Fentanyl is a potent, synthetic opioid analgesic that acts primarily as an agonist at the mu-opioid receptors in the central nervous system (CNS). Its primary therapeutic action is analgesia. Other effects include respiratory depression, euphoria, miosis, and physical dependence.
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Pharmacokinetics

Absorption:

Bioavailability: Approximately 48% (transmucosal and swallowed portions combined); 25% from transmucosal absorption, 33% from swallowed portion (due to first-pass metabolism)
Tmax: 20-40 minutes (for transmucosal absorption)
FoodEffect: Not applicable for transmucosal administration, as it's designed for rapid absorption through the oral mucosa.

Distribution:

Vd: 4 L/kg
ProteinBinding: 80-85%
CnssPenetration: Yes

Elimination:

HalfLife: 3-7 hours (terminal elimination half-life after transmucosal administration)
Clearance: Not available (highly variable)
ExcretionRoute: Mainly urine (75% as metabolites, 10% as unchanged drug), feces (9% as metabolites)
Unchanged: Approximately 10% (in urine)
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Pharmacodynamics

OnsetOfAction: 5-15 minutes
PeakEffect: 20-40 minutes
DurationOfAction: 1-2 hours (for breakthrough pain relief)

Safety & Warnings

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BLACK BOX WARNING

RISK OF RESPIRATORY DEPRESSION, ACCIDENTAL INGESTION, ABUSE, MISUSE, AND ADDICTION, CYTOCHROME P450 3A4 INTERACTION, and RISK EVALUATION AND MITIGATION STRATEGY (REMS). Fentanyl is an opioid agonist and a Schedule II controlled substance. The risk of addiction, abuse, and misuse, even at recommended doses, is high. Serious, life-threatening, or fatal respiratory depression may occur. Accidental ingestion of fentanyl, especially by children, can result in a fatal overdose. Concomitant use with CYP3A4 inhibitors may result in increased fentanyl plasma concentrations, leading to increased or prolonged opioid effects and potentially fatal respiratory depression. Concomitant use with benzodiazepines or other CNS depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. Fentanyl is subject to a REMS program to ensure that the benefits of the drug outweigh the risks of addiction, abuse, misuse, and serious complications.
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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 immediate medical attention:

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
Signs of low blood sugar, including:
+ Dizziness
+ Headache
+ Feeling sleepy or weak
+ Shaking
+ Fast heartbeat
+ Confusion
+ Hunger
+ Sweating
Severe dizziness or fainting
Confusion
Severe constipation or stomach pain, which may indicate a serious bowel problem
Breathing difficulties, such as:
+ Trouble breathing
+ Slow or shallow breathing
+ Noisy breathing
+ Sleep apnea (breathing problems during sleep)
Chest pain
Abnormal heartbeat (fast or slow)
Seizures
Depression
Trouble controlling body movements
Swelling in the arms or legs
Changes in vision

Serotonin Syndrome: A Rare but Serious Condition

If you take this medication with certain other drugs, you may be at risk for serotonin syndrome, a potentially life-threatening condition. Seek medical help immediately if you experience:

Agitation
Balance problems
Confusion
Hallucinations
Fever
Abnormal heartbeat
Flushing
Muscle twitching or stiffness
Seizures
Shivering or shaking
Excessive sweating
Severe diarrhea, nausea, or vomiting
Severe headache

Adrenal Gland Problems: A Rare but Serious Condition

Taking an opioid medication like this one may lead to a rare but serious adrenal gland problem. Seek medical help immediately if you experience:

Extreme fatigue or weakness
Fainting
Severe dizziness
Nausea or vomiting
Decreased appetite

Other Possible Side Effects

Like all medications, this drug may cause side effects in some people. While many individuals may not experience any side effects or only 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 help if they bother you or persist:

Dizziness
Drowsiness
Fatigue or weakness
Dry mouth
Constipation
Diarrhea
Stomach pain
Nausea or vomiting
Decreased appetite
Headache
Feeling cold
Sleep disturbances
Excessive sweating
* Irritation at the site of administration

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.
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Seek Immediate Medical Attention If You Experience:

  • Severe drowsiness or difficulty waking up
  • Slow, shallow, or difficult breathing
  • Bluish lips or skin
  • Extreme dizziness or lightheadedness
  • Confusion
  • Pinpoint pupils
  • Unusual weakness
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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. Describe the allergic reaction you experienced, including the symptoms that occurred.
Certain health conditions, including:
+ Respiratory problems like asthma, breathing difficulties, or sleep apnea
+ Elevated carbon dioxide levels in the blood
+ Stomach or bowel blockage or narrowing
Kidney or liver disease
Recent use (within the last 14 days) of specific medications for depression or Parkinson's disease, such as isocarboxazid, phenelzine, tranylcypromine, selegiline, or rasagiline, as this may lead to severely high blood pressure
Current use of certain medications, including buprenorphine, butorphanol, linezolid, methylene blue, nalbuphine, or pentazocine
Presence of mouth sores, which may require discussion with your doctor

This list is not exhaustive, and it is crucial to inform your doctor and pharmacist about all your medications (prescription, over-the-counter, natural products, and vitamins) and health conditions to ensure safe use of this medication. Do not initiate, discontinue, or modify the dosage of any medication without consulting your doctor.
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Precautions & Cautions

Important Warnings and Cautions

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

Caution with Daily Activities
Until you know how this medication affects you, avoid driving and other tasks that require alertness. To minimize the risk of dizziness or fainting, get up slowly from a sitting or lying down position, and be cautious when climbing stairs.

Tolerance and Dependence
Long-term or high-dose use of this medication may lead to tolerance, where the medication becomes less effective, and higher doses may be needed to achieve the same effect. If you experience a decrease in the medication's effectiveness, contact your doctor. Do not take more than the prescribed dose.

Additionally, regular use of opioid medications like this one can cause dependence. If you need to reduce the dose or stop taking this medication, consult your doctor first, as sudden changes can increase the risk of withdrawal or other severe problems. Follow your doctor's instructions carefully, and report any increased pain, mood changes, suicidal thoughts, or other adverse effects.

Safe Use
Do not exceed the prescribed dose, frequency, or duration of treatment, as this can increase the risk of severe side effects. Avoid taking this medication with other strong pain medications or using a pain patch without consulting your doctor first.

If your pain worsens, you become more sensitive to pain, or you experience new pain, contact your doctor immediately. Do not take more than the prescribed dose.

Interactions and Contraindications
If you consume grapefruit juice or eat grapefruit regularly, discuss this with your doctor. Do not take this medication with alcohol or products containing alcohol, as this can lead to unsafe and potentially fatal effects.

Seizure Risk
This medication may increase the risk of seizures in some individuals, particularly those with a history of seizures. Consult your doctor to determine if you are at a higher risk of seizures while taking this medication.

Hormonal Effects
Long-term use of opioid medications can lead to lower sex hormone levels. If you experience a decrease in libido, fertility problems, irregular menstrual periods, or ejaculation problems, contact your doctor.

Dental Care
Maintain good oral hygiene and visit your dentist regularly.

Diabetes Considerations
If you have diabetes, consult your doctor, as some products may contain sugar.

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

Breastfeeding
If you are breastfeeding, inform your doctor, as this medication can pass into breast milk and harm your baby. Seek medical attention immediately if your baby appears overly sleepy, limp, or has breathing difficulties.
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Overdose Information

Overdose Symptoms:

  • Slowed or stopped breathing (respiratory depression)
  • Extreme drowsiness or unresponsiveness
  • Cold, clammy skin
  • Pinpoint pupils
  • Limp muscles
  • Low blood pressure
  • Slowed heart rate
  • Coma

What to Do:

Seek immediate emergency medical attention. Call 911 or your local emergency number. Administer naloxone if available and trained to do so. Call 1-800-222-1222 (Poison Control Center) for additional guidance.

Drug Interactions

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Contraindicated Interactions

  • Benzodiazepines and other CNS depressants (unless benefits outweigh risks, with dose reduction and close monitoring)
  • CYP3A4 inhibitors (strong, e.g., ketoconazole, itraconazole, ritonavir, clarithromycin, grapefruit juice) - risk of increased fentanyl plasma concentrations and respiratory depression
  • Monoamine Oxidase Inhibitors (MAOIs) - risk of serotonin syndrome or opioid toxicity (concurrent use or within 14 days of MAOI discontinuation)
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Major Interactions

  • Other CNS depressants (e.g., sedatives, hypnotics, anxiolytics, general anesthetics, phenothiazines, tranquilizers, skeletal muscle relaxants, other opioids, alcohol) - increased risk of respiratory depression, profound sedation, coma, death
  • CYP3A4 inducers (e.g., rifampin, carbamazepine, phenytoin) - decreased fentanyl plasma concentrations, leading to reduced efficacy
  • Serotonergic drugs (e.g., SSRIs, SNRIs, TCAs, triptans, mirtazapine, tramadol) - risk of serotonin syndrome
  • Mixed agonist/antagonist opioids (e.g., pentazocine, nalbuphine, butorphanol) - may reduce fentanyl's analgesic effect and/or precipitate withdrawal symptoms
  • Opioid antagonists (e.g., naltrexone, naloxone) - may precipitate withdrawal symptoms
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Moderate Interactions

  • Anticholinergics - increased risk of urinary retention and/or severe constipation
  • Diuretics - opioids may reduce the efficacy of diuretics by inducing the release of antidiuretic hormone
  • Antihypertensives - additive hypotensive effects
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Minor Interactions

  • Not available

Monitoring

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Baseline Monitoring

Opioid tolerance assessment

Rationale: Fentanyl transmucosal is only for opioid-tolerant patients to prevent life-threatening respiratory depression.

Timing: Prior to initiation

Pain assessment (type, severity, frequency of BTCP)

Rationale: To establish baseline and guide titration.

Timing: Prior to initiation

Respiratory rate and depth

Rationale: To assess baseline respiratory function and identify risk for respiratory depression.

Timing: Prior to initiation

Level of consciousness/sedation

Rationale: To assess baseline CNS status.

Timing: Prior to initiation

Concomitant medications review (especially CNS depressants, CYP3A4 inhibitors/inducers)

Rationale: To identify potential drug interactions that increase risk of adverse effects.

Timing: Prior to initiation

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Routine Monitoring

Pain relief and BTCP episodes

Frequency: Daily/as needed during titration, then regularly during therapy

Target: Acceptable pain control with tolerable side effects

Action Threshold: Inadequate pain relief or excessive side effects warrant dose adjustment or re-evaluation.

Respiratory rate and depth

Frequency: Regularly, especially during titration and with dose changes

Target: Normal for patient, typically >10-12 breaths/min

Action Threshold: <10 breaths/min, shallow breathing, or signs of hypoventilation require immediate intervention.

Level of consciousness/sedation

Frequency: Regularly, especially during titration and with dose changes

Target: Alert and oriented, or easily aroused

Action Threshold: Excessive sedation (e.g., somnolence, stupor) requires dose reduction or discontinuation.

Bowel function (constipation)

Frequency: Regularly

Target: Regular bowel movements

Action Threshold: Severe constipation requires laxative regimen adjustment or intervention.

Signs of opioid abuse, misuse, or addiction

Frequency: Regularly throughout therapy

Target: Absence of aberrant drug-related behaviors

Action Threshold: Suspicion of abuse/misuse requires re-evaluation of treatment plan and potential referral.

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Symptom Monitoring

  • Respiratory depression (slow, shallow breathing)
  • Excessive sedation or somnolence
  • Dizziness or lightheadedness
  • Nausea and vomiting
  • Constipation
  • Confusion or disorientation
  • Miosis (pinpoint pupils)
  • Itching
  • Signs of opioid withdrawal if abruptly discontinued

Special Patient Groups

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Pregnancy

Category C. Use only if the potential benefit justifies the potential risk to the fetus. Prolonged use during pregnancy can result in neonatal opioid withdrawal syndrome, which may be life-threatening if not recognized and treated.

Trimester-Specific Risks:

First Trimester: Potential for structural abnormalities, though data are limited and conflicting for opioids.
Second Trimester: Risk of fetal growth restriction and neurobehavioral effects.
Third Trimester: Risk of neonatal opioid withdrawal syndrome (NOWS) if used chronically, and respiratory depression in the neonate if used near delivery.
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Lactation

Fentanyl is excreted into breast milk. Use is generally not recommended due to potential for serious adverse reactions in breastfed infants, including sedation, respiratory depression, and withdrawal symptoms. If use is unavoidable, monitor the infant closely for signs of sedation and respiratory depression.

Infant Risk: Moderate risk (L3). Potential for sedation, poor feeding, respiratory depression, and withdrawal symptoms in the infant.
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Pediatric Use

Safety and effectiveness have not been established in pediatric patients. Not recommended for use in children.

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Geriatric Use

Use with caution. Elderly patients may be more sensitive to the effects of fentanyl, particularly respiratory depression. Consider lower starting doses and slower titration. Monitor closely for adverse effects.

Clinical Information

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Clinical Pearls

  • Fentanyl transmucosal products are ONLY for the management of breakthrough cancer pain (BTCP) in opioid-tolerant patients. They are NOT for opioid-naive patients or for acute pain, postoperative pain, or headache.
  • Opioid tolerance is defined as taking at least 60 mg oral morphine/day, 25 mcg transdermal fentanyl/hour, 30 mg oral oxycodone/day, 8 mg oral hydromorphone/day, or an equianalgesic dose of another opioid for at least one week.
  • Dosing is highly individualized and requires careful titration to find the effective dose for each BTCP episode. Patients should be instructed to use only one unit per episode and wait at least 4 hours before treating another episode with the same dose.
  • Due to the risk of life-threatening respiratory depression, accidental ingestion, abuse, and misuse, fentanyl transmucosal products are subject to a strict REMS (Risk Evaluation and Mitigation Strategy) program.
  • Patients and caregivers must be educated on proper administration, safe storage (out of reach of children), and proper disposal (e.g., flushing down the toilet) to prevent accidental exposure.
  • Concomitant use with CNS depressants (e.g., benzodiazepines, alcohol) or CYP3A4 inhibitors can significantly increase the risk of serious adverse events, including fatal respiratory depression.
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Alternative Therapies

  • Other rapid-onset opioids for breakthrough cancer pain (e.g., oral transmucosal fentanyl citrate (different formulations like buccal tablets, sublingual tablets, nasal spray), sufentanil sublingual tablet)
  • Short-acting oral opioids (e.g., immediate-release morphine, oxycodone, hydromorphone) - generally slower onset than transmucosal fentanyl
  • Non-opioid analgesics (e.g., NSAIDs, acetaminophen) - for mild to moderate pain, not typically sufficient for BTCP
  • Adjuvant analgesics (e.g., gabapentin, pregabalin, tricyclic antidepressants) - for neuropathic pain components
  • Regional anesthesia or nerve blocks
  • Radiation therapy (for localized pain from tumors)
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Cost & Coverage

Average Cost: Highly variable, typically several hundred to over a thousand USD per 30 units (e.g., lozenges)
Generic Available: Yes
Insurance Coverage: Tier 3 or 4 (Specialty/Non-Preferred Brand), often requires prior authorization and step therapy due to high cost and abuse potential.
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General Drug Facts

If your symptoms or health problems do not improve or worsen, contact your doctor immediately. It is essential to use your medication responsibly: do not share it with others, and never take someone else's medication.

This medication is accompanied by a Medication Guide, which provides crucial information about its safe use. Read this guide carefully when you first receive your medication, and review it again each time your prescription is refilled. If you have any questions or concerns about your medication, consult your doctor, pharmacist, or other healthcare provider.

In the event of an overdose, a medication called naloxone can be administered to help counteract its effects. Discuss obtaining and using naloxone with your doctor or pharmacist. If you suspect an overdose has occurred, seek immediate medical attention, even if naloxone has been administered. Be prepared to provide information about the overdose, including the substance taken, the amount, and the time it occurred.

In case of a suspected overdose, contact your local poison control center or seek emergency medical care right away. When seeking help, be prepared to provide detailed information about the overdose, including what was taken, the quantity, and the time of the incident.