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Drug Safety-related Labeling Changes (SrLC)

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SUBSYS (NDA-202788)

(FENTANYL)

Safety-related Labeling Changes Approved by FDA Center for Drug Evaluation and Research (CDER)

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03/04/2021 (SUPPL-23)

Approved Drug Label (PDF)

Boxed Warning

Additions and/or revisions underlined:

Risk Evaluation and Mitigation Strategy (REMS)

Because of the risk for accidental exposure, misuse, abuse, addiction, and overdose, SUBSYS is available only through a restricted program required by the Food and Drug Administration, called a Risk Evaluation and Mitigation Strategy (REMS). Under the Transmucosal Immediate Release Fentanyl (TIRF) REMS, pharmacies, outpatients, and healthcare professionals who prescribe to outpatients must enroll in the program. Inpatient pharmacies must develop policies and procedures to verify opioid tolerance in inpatients who require SUBSYS while hospitalized [see Warnings and Precautions (5.7)]. Further information is available at www.TIRFREMSaccess.com or by calling 1-866-822-1483.

5 Warnings and Precautions

5.1 Life-Threatening Respiratory Depression

Additions and/or revisions underlined:

… Accidental ingestion of even one dose of SUBSYS, especially by children, can result in respiratory depression and death due to an overdose of fentanyl.

Educate patients and caregivers on how to recognize respiratory depression and emphasize the importance of calling 911 or getting emergency medical help right away in the event of a known or suspected overdose [see Patient Counseling Information (17)].

Opioids can cause sleep-related breathing disorders including central sleep apnea (CSA) and sleep-related hypoxemia. Opioid use increases the risk of CSA in a dose-dependent fashion. In patients who present with CSA, consider decreasing the opioid dosage using best practices for opioid taper [see Dosage and Administration (2.4)].

Newly added information:

Patient Access to Naloxone for the Emergency Treatment of Opioid Overdose

Discuss the availability of naloxone for the emergency treatment of opioid overdose with the patient and caregiver and assess the potential need for access to naloxone, both when initiating and renewing treatment with SUBSYS. Inform patients and caregivers about the various ways to obtain naloxone as permitted by individual state naloxone dispensing and prescribing requirements or guidelines (e.g., by prescription, directly from a pharmacist, or as part of a community-based program). Educate patients and caregivers on how to recognize respiratory depression and emphasize the importance of calling 911 or getting emergency medical help, even if naloxone is administered [see Patient Counseling Information (17)].

Consider prescribing naloxone, based on the patient’s risk factors for overdose, such as concomitant use of CNS depressants, a history of opioid use disorder, or prior opioid overdose. The presence of risk factors for overdose should not prevent the proper management of pain in any given patient. Also consider prescribing naloxone if the patient has household members (including children) or other close contacts at risk for accidental ingestion or overdose. If naloxone is prescribed, educate patients and caregivers on how to treat with naloxone. [see Warnings and Precautions (5.4, 5.6), Patient Counseling Information (17)].

5.4 Risks from Concomitant Use with Benzodiazepines or Other CNS Depressants

Additions and/or revisions underlined:

… If an opioid analgesic is initiated in a patient already taking a benzodiazepine or other CNS depressant, prescribe a lower initial dose of the opioid analgesic, and titrate based on clinical response. Follow patients closely for signs and symptoms of respiratory depression and sedation.

If concomitant use is warranted, consider prescribing naloxone for the emergency treatment of opioid overdose [see Dosage and Administration (2.2), Warnings and Precautions (5.1)].

5.6 Addiction, Abuse, and Misuse

Additions and/or revisions underlined:

… Patients at increased risk may be prescribed opioids such as SUBSYS, but use in such patients necessitates intensive counseling about the risks and proper use of SUBSYS along with intensive monitoring for signs of addiction, abuse, and misuse. Consider prescribing naloxone for the emergency treatment of opioid overdose [see Dosage and Administration (2.2), Warnings and Precautions (5.1)].

5.7 Transmucosal Immediate Release Fentanyl (TIRF) Risk Evaluation and Mitigation Strategy (REMS)

Additions and/or revisions underlined:

Because of the risk of accidental exposure, misuse, abuse, addiction, and overdose [see Warnings and Precautions (5.1)], SUBSYS is available only through a restricted program under a REMS called the TIRF REMS. Under the TIRF REMS, healthcare professionals who prescribe to outpatients, the outpatients themselves, and pharmacies, are required to enroll in the program.

Notable requirements of the TIRF REMS are:

  • Prescribers for outpatient use must be certified with the REMS program by enrolling and completing training. Prescribers must document opioid tolerance with every SUBSYS prescription.

  • Outpatients must be enrolled in the REMS program and must be opioid tolerant to receive SUBSYS [see Dosage and Administration (2.1)].

  • Outpatient pharmacies must be certified with the REMS program and verify documentation of opioid tolerance with every SUBSYS prescription.

  • Inpatient pharmacies must be certified with the REMS program and develop policies and procedures to verify opioid tolerance in inpatients who require SUBSYS while hospitalized.

  • Wholesalers and distributers must enroll in the REMS program and distribute only to certified pharmacies.

    Further information, including a list of qualified certified pharmacies/and enrolled distributors, is available at www.tirfremsaccess.com or by calling 1-866-822-1483.

7 Drug Interactions

Table 6: Clinically Significant Drug Interactions with SUBSYS

Benzodiazepines and Other Central Nervous System (CNS) Depressants

Under Intervention, the following language is added:

If concomitant use is warranted, consider prescribing naloxone for the emergency treatment of opioid overdose [see Dosage and Administration (2.2), Warnings and Precautions (5.1, 5.4, 5.6)].

Muscle Relaxants

Under Intervention, the following language is added:

Due to the risk of respiratory depression with concomitant use of skeletal muscle relaxants and opioids, consider prescribing naloxone for the emergency treatment of opioid overdose [see Dosage and Administration (2.2), Warnings and Precautions (5.1, 5.4)]

17 PCI/PI/MG (Patient Counseling Information/Patient Information/Medication Guide)

MEDICATION GUIDE

Important information about SUBSYS:

Additions and/or revisions underlined:

  • Get emergency help or call 911 right away if you take too much SUBSYS (overdose). When you first start taking SUBSYS, when your dose is changed, or if you take too much (overdose), serious or life-threatening breathing problems that can lead to death may occur. Talk to your healthcare provider about naloxone, a medicine for the emergency treatment of an opioid overdose.

  • Store SUBSYS securely, out of sight and reach of children, in a location not accessible by others, including visitors to the home. SUBSYS is available only through a program called the Transmucosal Immediate Release Fentanyl (TIRF) Risk Evaluation and Mitigation Strategy (REMS). To receive SUBSYS, you must:

    • sign the Patient Enrollment Form

Before taking SUBSYS, tell your healthcare provider if you have a history of:

  • abuse of street or prescription drugs, alcohol addiction, opioid overdose, or mental health problems.

Tell your healthcare provider if you are:

  • living in a household where there are small children or someone who has abused street or prescription drugs

Get emergency medical help or call 911 right away if you have:

PATIENT COUNSELING INFORMATION

Storage and Disposal of Unused and Used SUBSYS [see Instructions for Use].

Additions and/or revisions underlined:

In the event that a caregiver requires additional assistance in disposing of excess unusable units that remain in the home after a patient has expired, instruct them to call the toll-free number for West Therapeutic Development, LLC., 1-844-452-9263 or seek assistance from their local DEA office.

Life-Threatening Respiratory Depression

Newly added information:

Educate patients and caregivers on how to recognize respiratory depression and emphasize the importance of calling 911 or getting emergency medical help right away in the event of a known or suspected overdose [see Warnings and Precautions (5.1)].

Newly added information:

Patient Access to Naloxone for the Emergency Treatment of Opioid Overdose

Discuss with the patient and caregiver the availability of naloxone for the emergency treatment of opioid overdose, both when initiating and renewing treatment with SUBSYS. Inform patients and caregivers about the various ways to obtain naloxone as permitted by individual state naloxone dispensing and prescribing requirements or guidelines (e.g., by prescription, directly from a pharmacist, or as part of a community-based program) [see Dosage and Administrations (2.2), Warnings and Precautions (5.1)].

Educate patients and caregivers on how to recognize the signs and symptoms of an overdose.

Explain to patients and caregivers that naloxone’s effects are temporary, and that they must call 911 or get emergency medical help right away in all cases of known or suspected opioid overdose, even if naloxone is administered [see Overdosage (10)].

If naloxone is prescribed, also advise patients and caregivers:

  • How to treat with naloxone in the event of an opioid overdose

  • To tell family and friends about their naloxone and to keep it in a place where family and friends can access it in an emergency

  • To read the Patient Information (or other educational material) that will come with their naloxone. Emphasize the importance of doing this before an opioid emergency happens, so the patient and caregiver will know what to do.

    Increased Risk of Overdose and Death in Children Due to Accidental Exposure

    SUBSYS Child Safety Kit

    Additions and/or revisions underlined:

    Provide patients and their caregivers with a SUBSYS Child Safety Kit. The kit consists of a portable carrying case, a lock for the bag and contains a package of cabinet and drawer child safety latches for securing the storage space at home to help patients store SUBSYS and other medicines out of the reach of children. To obtain a supply of Child Safety Kits, health care professionals can call West Therapeutic Development, LLC., 1-844-452-9263.

    Transmucosal Immediate-Release Fentanyl (TIRF) REMS

    Additions and/or revisions underlined:

    SUBSYS is available only through a restricted program called the Transmucosal Immediate Release Fentanyl (TIRF) REMS [see Warnings and Precautions (5.7)]. Inform the patient of the following notable requirements:

  • Outpatients must be enrolled in the REMS program

  • Patients must be opioid-tolerant to receive SUBSYS

    SUBSYS is available only from certified pharmacies participating in this program. Therefore, provide patients with the telephone number and website for information on how to obtain the product.

    Pharmacies, outpatients, and healthcare professionals who prescribe to outpatients are required to enroll in the program. Inpatient pharmacies must develop policies and procedures to verify opioid tolerance in inpatients who require SUBSYS while hospitalized [see Warnings and Precautions (5.7)].

10/07/2019 (SUPPL-20)

Approved Drug Label (PDF)

5 Warnings and Precautions

5.1 Life-Threatening Respiratory Depression

Newly added information to end of subsection:

Opioids can cause sleep-related breathing disorders including central sleep apnea (CSA) and sleep-related hypoxemia. Opioid use increases the risk of CSA in a dose-dependent fashion. In patients who present with CSA, consider decreasing the opioid dosage using best practices for opioid taper.

Additions and/or revisions underlined:

5.10 Serotonin Syndrome with Concomitant Use of Serotonergic Drugs

Cases of serotonin syndrome, a potentially life-threatening condition, have been reported during concomitant use of SUBSYS with serotonergic drugs. Serotonergic drugs include selective serotonin reuptake inhibitors (SSRIs), serotonin and norepinephrine reuptake inhibitors (SNRIs), tricyclic antidepressants (TCAs), triptans, 5-HT3 receptor antagonists, drugs that affect the serotonergic neurotransmitter system (e.g., mirtazapine, trazodone, tramadol), certain muscle relaxants (i.e., cyclobenzaprine, metaxalone), and drugs that impair metabolism of serotonin (including MAO inhibitors, both those intended to treat psychiatric disorders and also others, such as linezolid and intravenous methylene blue).

7 Drug Interactions

Table 6: Clinically Significant Drug Interactions with SUBSYS

Serotonergic Drugs

Additions and/or revisions underlined:

Example: Selective serotonin reuptake inhibitors (SSRIs), serotonin and norepinephrine reuptake inhibitors (SNRIs), tricyclic antidepressants (TCAs), triptans, 5-HT3 receptor antagonists, drugs that affect the serotonin neurotransmitter system (e.g., mirtazapine, trazodone, tramadol), certain muscle relaxants (i.e., cyclobenzaprine, metaxalone), monoamine oxidase (MAO) inhibitors (those intended to treat psychiatric disorders and also others, such as linezolid and intravenous methylene blue).

17 PCI/PI/MG (Patient Counseling Information/Patient Information/Medication Guide)

MEDICATION GUIDE

Additions and/or revisions underlined in bulleted information:

Important information about SUBSYS:

  • Store SUBSYS securely, out of sight and reach of children, and in a location not accessible by others, including visitors to the home.

When taking SUBSYS:

  • Dispose of expired, unwanted, or unused SUBSYS by promptly flushing down the toilet, if a drug take-back option is not readily available. Visit www.fda.gov/drugdisposal for additional information on disposal of unused medicines.

PATIENT COUNSELING INFORMATION

Storage and Disposal of Unused and Used SUBSYS:

Additions and/or revisions underlined:

Because of the risks associated with accidental ingestion, misuse, and abuse, advise patients to store SUBSYS securely, out of sight and reach of children, and in a location not accessible by others, including visitors to the home. Inform patients that leaving SUBSYS unsecured can pose a deadly risk to others in the home.

Advise patients and caregivers that when medicines are no longer needed, they should be disposed of promptly.

12/16/2016 (SUPPL-16)

Approved Drug Label (PDF)

Boxed Warning

(additions underlined)

 

WARNING: LIFE-THREATENING RESPIRATORY DEPRESSION; ACCIDENTAL INGESTION; CYTOCHROME P450 3A4 INTERACTION; CONCOMITANT USE WITH BENZODIAZEPINES OR OTHER CNS DEPRESSANTS; RISK OF MEDICATION ERRORS; ADDICTION, ABUSE, AND MISUSE; REMS and NEONATAL OPIOID WITHDRAWAL SYNDROME

 

Life-Threatening Respiratory Depression

Serious, life-threatening, and/or fatal respiratory depression has occurred in patients treated with SUBSYS, including following use in opioid non-tolerant patients and improper dosing. Monitor for respiratory depression, especially during initiation of SUBSYS or following a dose increase. The substitution of SUBSYS for any other fentanyl product may result in fatal overdose

 

Due to the risk of respiratory depression, SUBSYS is contraindicated in the management of acute or postoperative pain including headache/migraine and in opioid non-tolerant patients.

 

Accidental INGESTION

Accidental ingestion of even one dose of SUBSYS especially by children, can result in a fatal overdose of fentanyl .

 

Death has been reported in children who have accidentally ingested transmucosal immediate- release fentanyl products. SUBSYS must be kept out of reach of children.

 

Cytochrome P450 3A4 Interaction

The concomitant use of SUBSYS with all cytochrome P450 3A4 inhibitors may result in an increase in fentanyl plasma concentrations, which could increase or prolong adverse reactions and may cause potentially fatal respiratory depression. In addition, discontinuation of a concomitantly used cytochrome P450 3A4 inducer may result in an increase in fentanyl plasma concentration. Monitor patients receiving SUBSYS and any CYP3A4 inhibitor or inducer.

 

 

Risks From Concomitant Use With Benzodiazepines Or Other CNS Depressants Concomitant use of opioids with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death.

• Reserve concomitant prescribing of SUBSYS and benzodiazepines or other CNS

depressants for use in patients for whom alternative treatment options are inadequate.

• Limit dosages and durations to the minimum required.

• Follow patients for signs and symptoms of respiratory depression and sedation.

 

Risk of Medication Errors

Substantial differences exist in the pharmacokinetic profile of SUBSYS compared to other fentanyl products that result in clinically important differences in the extent of absorption of fentanyl that could result in fatal overdose

  • When prescribing, do not convert patients on a mcg per mcg basis from any other fentanyl

products to SUBSYS.

  • When dispensing, do not substitute a SUBSYS prescription for other fentanyl products.

 

 

Addiction, Abuse, and Misuse

SUBSYS exposes patients and other users to the risks of opioid addiction, abuse, and misuse, which can lead to overdose and death. Assess each patient’s risk prior to prescribing SUBSYS, and monitor all patients regularly for the development of these behaviors and conditions.

 

 

 

Risk Evaluation and Mitigation Strategy (REMS) Access Program

Because of the risk for misuse, abuse, addiction, and overdose, SUBSYS is available only through a restricted program required by the Food and Drug Administration, called a Risk Evaluation and Mitigation Strategy (REMS). Under the Transmucosal Immediate Release Fentanyl (TIRF) REMS Access program, outpatients, healthcare professionals who prescribe to outpatients, pharmacies, and distributors must enroll in the program. Further information is available at www.TIRFREMSaccess.com or by calling1-866-822-1483.

 

Neonatal Opioid Withdrawal Syndrome

Prolonged use of SUBSYS during pregnancy can result in neonatal opioid withdrawal syndrome, which may be life-threatening if not recognized and treated, and requires management according to protocols developed by neonatology experts. If opioid use is required for a prolonged period in a pregnant woman, advise the patient of the risk of neonatal opioid withdrawal syndrome and ensure that appropriate treatment will be available

4 Contraindications

(additions underlined)

    Opioid non-tolerant patients: Life-threatening respiratory depression and death could occur at any dose in opioid non-tolerant  patients 

 

  • Acute or postoperative pain including headache/migraine and dental pain, or in the emergency department .

  • Acute or severe bronchial asthma in an unmonitored setting or in the absence of resuscitative equipment.

  • Known or suspected gastrointestinal obstruction, including paralytic ileus.

  • Known hypersensitivity (e.g., anaphylaxis) to fentanyl or components of SUBSYS.

5 Warnings and Precautions

5.1 Life-Threatening Respiratory Depression

(additions underlined)

 

Serious, life-threatening, or fatal respiratory depression has been reported with the use of opioids, even when used as recommended.  Respiratory depression, if not immediately recognized and treated

may lead to respiratory arrest and death. Management of respiratory depression may include close

observation, supportive measures, and use of opioid antagonists, depending on the patient’s clinical status. Carbon dioxide (CO2) retention from opioid-induced respiratory depression can exacerbate the sedating effects of opioids.

While serious, life-threatening, or fatal respiratory depression can occur at any time during the use of SUBSYS, the risk is greatest during the initiation of therapy or following a dosage increase. Monitor patients closely for respiratory depression, especially within the first 24-72 hours of initiating therapy with and following dosage increases of SUBSYS.

 

reduce the risk of respiratory depression, proper dosing and titration of SUBSYS are essential. Overestimating the SUBSYS dosage can result in a fatal overdose with the first dose. The substitution of SUBSYS for any other fentanyl product may result in fatal overdose.

 

SUBSYS could be fatal to individuals for whom it is not prescribed and for those who are not opioid- tolerant.


Accidental ingestion or exposure to even one dose of SUBSYS, especially in children, can result in respiratory depression and death due to an overdose of fentanyl.

5.10 Serotonin Syndrome with Concomitant Use of Serotonergic Drugs

(subsection added)

 

Cases of serotonin syndrome, a potentially life-threatening condition, have been reported during concomitant use of SUBSYS with serotonergic drugs. Serotonergic drugs include selective serotonin reuptake inhibitors (SSRIs), serotonin and norepinephrine reuptake inhibitors (SNRIs), tricyclic antidepressants (TCAs), triptans, 5-HT3 receptor antagonists, drugs that affect the serotonergic neurotransmitter system (e.g., mirtazapine, trazodone, tramadol), and drugs that impair metabolism of serotonin (including MAO inhibitors, both those intended to treat psychiatric disorders and also others, such as linezolid and intravenous methylene blue) .This may occur within the recommended dosage range.

 

Serotonin syndrome symptoms may include mental status changes (e.g., agitation, hallucinations, coma), autonomic instability (e.g., tachycardia, labile blood pressure, hyperthermia), neuromuscular aberrations (e.g., hyperreflexia, incoordination, rigidity), and/or gastrointestinal symptoms (e.g., nausea, vomiting, diarrhea). The onset of symptoms generally occurs within several hours to a few days of concomitant use, but may occur later than that. Discontinue SUBSYS if serotonin syndrome is suspected.

5.11 Adrenal Insufficiency

(subsection added)

 

Cases of adrenal insufficiency have been reported with opioid use, more often following greater than one month of use. Presentation of adrenal insufficiency may include non-specific symptoms and signs including nausea, vomiting, anorexia, fatigue, weakness, dizziness, and low blood pressure. If adrenal insufficiency is suspected, confirm the diagnosis with diagnostic testing as soon as possible. If adrenal insufficiency is diagnosed, treat with physiologic replacement doses of corticosteroids. Wean the patient off of the opioid to allow adrenal function to recover and continue corticosteroid treatment until adrenal function recovers. Other opioids may be tried as some cases reported use of a different opioid without recurrence of adrenal insufficiency. The information available does not identify any particular opioids as being more likely to be associated with adrenal insufficiency.

5.12 Severe Hypotension

(subsection added)

 

SUBSYS may cause severe hypotension including orthostatic hypotension and syncope in ambulatory patients. There is increased risk in patients whose ability to maintain blood pressure has already been compromised by a reduced blood volume or concurrent administration of certain CNS depressant drugs (e.g. phenothiazines or general anesthetics) .Monitor these patients for signs of hypotension after initiating or titrating the dosage of SUBSYS. In patients with circulatory shock, SUBSYS may cause vasodilation that can further reduce cardiac output and blood pressure. Avoid the use of SUBSYS in patients with circulatory shock.

5.13 Risks of Use in Patients with Increased Intracranial Pressure, Brain Tumors, Head Injury, or Impaired Consciousness

( subsection added)

 

In patients who may be susceptible to the intracranial effects of CO2 retention (e.g., those with evidence of increased intracranial pressure or brain tumors), SUBSYS may reduce respiratory drive, and the resultant CO2 retention can further increase intracranial pressure. Monitor such patients for signs of sedation and respiratory depression, particularly when initiating therapy with SUBSYS.

Opioids may also obscure the clinical course in a patient with a head injury. Avoid the use of SUBSYS in patients with impaired consciousness or coma.

5.14 Risks of Use in Patients with Gastrointestinal Conditions

(subsection added)

 

SUBSYS is contraindicated in patients with known or suspected gastrointestinal obstruction, including paralytic ileus.

 

The fentanyl in SUBSYS may cause spasm of the sphincter of Oddi. Opioids may cause increases in serum amylase. Monitor patients with biliary tract disease, including acute pancreatitis for worsening symptoms.

5.15 Increased Risk of Seizures in Patients with Seizure Disorders

 (subsection added)

 

The fentanyl in SUBSYS may increase the frequency of seizures in patients with seizure disorders, and may increase the risk of seizures occurring in other clinical settings associated with seizures. Monitor patients with a history of seizure disorders for worsened seizure control during SUBSYS therapy.

5.2 Increased Risk of Overdose in Children Due to Accidental Ingestion

(additions underlined)

 

Death has been reported in children who have accidentally ingested transmucosal immediate–release fentanyl products.

 

Patients and their caregivers must be informed that SUBSYS contains a medicine in an amount which can be fatal to a child. Physicians and dispensing pharmacists must specifically question patients or caregivers about the presence of children in the home (on a full time or visiting basis) and counsel them regarding the dangers to children from inadvertent exposure.

 

Patients and their caregivers must be instructed to keep both used and unused dosage units out of the reach of children. While all units should be disposed of immediately after use, partially consumed units represent a special risk to children. In the event that a unit is not completely consumed it must be properly disposed as soon as possible.

5.3 Risks of Concomitant Use or Discontinuation of Cytochrome P450 3A4 Inhibitors and Inducers

(additions underlined)


Concomitant use of SUBSYS with a CYP3A4 inhibitor, such as macrolide antibiotics (e.g., erythromycin), azole-antifungal agents (e.g., ketoconazole), and protease inhibitors (e.g., ritonavir), may increase plasma concentrations of fentanyl and prolong opioid adverse reactions, which may cause potentially fatal respiratory depression , particularly when an inhibitor is added after a stable dose of SUBSYS is achieved. Similarly, discontinuation of a CYP3A4 inducer, such as rifampin, carbamazepine, and phenytoin, in SUBSYS-treated patients may increase fentanyl plasma concentrations and prolong opioid adverse reactions. When using SUBSYS with CYP3A4 inhibitors or discontinuing CYP3A4 inducers in SUBSYS-treated patients, monitor patients closely at frequent intervals and consider dosage reduction of SUBSYS until stable drug effects are achieved .


Concomitant use of SUBSYS with CYP3A4 inducers or discontinuation of an CYP3A4 inhibitor could decrease fentanyl plasma concentrations, decrease opioid efficacy or, possibly, lead to a withdrawal syndrome in a patient who had developed physical dependence to fentanyl. When using SUBSYS with CYP3A4 inducers or discontinuing CYP3A4 inhibitors, monitor patients closely at frequent intervals and consider increasing the opioid dosage if needed to maintain adequate analgesia or if symptoms of opioid withdrawal occur.

5.4 Risks from Concomitant Use with Benzodiazepines or Other CNS Depressants

(additions underlined)


Profound sedation, respiratory depression, coma, and death may result from the concomitant use of SUBSYS with benzodiazepines or other CNS depressants (e.g., non-benzodiazepine sedatives/hypnotics, anxiolytics, tranquilizers, muscle relaxants, general anesthetics, antipsychotics, other opioids, alcohol). Because of these risks, reserve concomitant prescribing of these drugs for use in patients for whom alternative treatment options are inadequate.


Observational studies have demonstrated that concomitant use of opioid analgesics and benzodiazepines increases the risk of drug-related mortality compared to use of opioid analgesics alone. Because of similar pharmacological properties, it is reasonable to expect similar risk with the concomitant use of other CNS depressant drugs with opioid analgesics .


If the decision is made to prescribe a benzodiazepine or other CNS depressant concomitantly with an opioid analgesic, prescribe the lowest effective dosages and minimum durations of concomitant use. In patients already receiving an opioid analgesic, prescribe a lower initial dose of the benzodiazepine or other CNS depressant than indicated in the absence of an opioid, and titrate based on clinical response. If an opioid analgesic is initiated in a patient already taking a benzodiazepine or other CNS depressant, prescribe a lower initial dose of the opioid analgesic, and titrate based on clinical response. Follow patients closely for signs and symptoms of respiratory depression and sedation.


Advise both patients and caregivers about the risks of respiratory depression and sedation when SUBSYS is used with benzodiazepines or other CNS depressants (including alcohol and illicit drugs). Advise patients not to drive or operate heavy machinery until the effects of concomitant use of the benzodiazepine or other CNS depressant have been determined. Screen patients for risk of substance use.

5.5 Risk of Medication Errors

(subsection added)


When prescribing, DO NOT convert a patient to SUBSYS from any other fentanyl product on a mcg per mcg basis as SUBSYS and other fentanyl products are not equivalent on a microgram per microgram basis.

 

SUBSYS is NOT a generic version of other transmucosal immediate release fentanyl (TIRF) formulations. When dispensing, DO NOT substitute a SUBSYS prescription for any other TIRF formulation under any circumstances. Other TIRF formulations and SUBSYS are not equivalent. Substantial differences exist in the pharmacokinetic profile of SUBSYS compared to other fentanyl products including other TIRF formulations that result in clinically important differences in the rate and extent of absorption of fentanyl. As a result of these differences, the substitution of SUBSYS for any other fentanyl product may result in a fatal overdose.

There are no safe conversion directions available for patients on any other fentanyl products (Note: This includes oral, transdermal, or parenteral formulations of fentanyl.) Therefore, for opioid tolerant patients, the initial dose of SUBSYS should always be ONE 100 mcg spray. Individually titrate each patient’s dose to provide adequate analgesia while minimizing side effects.

5.6 Addiction, Abuse, and Misuse

(subsection added)


SUBSYS contains fentanyl, a Schedule II controlled substance. As an opioid, SUBSYS exposes users to the risks of addiction, abuse, and misuse.

 

Although the risk of addiction in any individual is unknown, it can occur in patients appropriately prescribed SUBSYS. Addiction can occur at recommended dosages and if the drug is misused or abused.

 

Assess each patient’s risk for opioid addiction, abuse, or misuse prior to prescribing SUBSYS, and monitor all patients receiving SUBSYS for the development of these behaviors or conditions. Risks are increased in patients with a personal or family history of substance abuse (including drug or alcohol abuse or addiction) or mental illness (e.g., major depression). The potential for these risks should not, however, prevent the proper management of pain in any given patient. Patients at increased risk may be prescribed opioids such as SUBSYS, but use in such patients necessitates intensive counseling about the risks and proper use of SUBSYS along with intensive monitoring for signs of addiction, abuse, and misuse.

 

Opioids are sought by drug abusers and people with addiction disorders and are subject to criminal diversion. Consider these risks when prescribing or dispensing SUBSYS. Strategies to reduce these risks include prescribing the drug in the smallest appropriate quantity and advising the patient on the proper disposal of unused drug. Contact local state professional licensing board or state controlled substances authority for information on how to prevent and detect abuse or diversion of this product.

5.7 Transmucosal Immediate Release Fentanyl (TIRF) Risk Evaluation and MitigationStrategy (REMS) Access Program

(additions underlined)

 

Because of the risk of misuse, abuse, addiction, and overdose , SUBSYS is available only through a restricted program under a REMS called the TIRF REMS Access program. Under the TIRF REMS Access program, outpatients, healthcare professionals who prescribe to outpatients, pharmacies, and distributors must enroll in the program. For inpatient administration (e.g. hospitals, hospices, and long-term care facilities that prescribe for inpatient use) of SUBSYS, patient and prescriber enrollment is not required.

 

Required components of the TIRF REMS Access program are:

•   Healthcare professionals who prescribe SUBSYS must review the prescriber educational materials for the TIRF REMS Access program, enroll in the program, and comply with the REMS requirements.

•   To receive SUBSYS, outpatients must understand the risks and benefits and sign a Patient-Prescriber Agreement.

•   Pharmacies that dispense SUBSYS must enroll in the program and agree to comply with the REMS arequirements.

•   Wholesalers and distributers that distribute SUBSYS must enroll in the program and distribute only to authorized pharmacies.

• Further information, including a list of qualified pharmacies/distributors, is available at

or by calling 1-866-822-1483.

5.8 Neonatal Opioid Withdrawal Syndrome

(subsection added)

 

Prolonged use of SUBSYS during pregnancy can result in withdrawal in the neonate. Neonatal opioid withdrawal syndrome, unlike opioid withdrawal syndrome in adults, may be life-threatening if not recognized and treated, and requires management according to protocols developed by neonatology experts. Observe newborns for signs of neonatal opioid withdrawal syndrome and manage accordingly. Advise pregnant women using opioids for a prolonged period of the risk of neonatal opioid withdrawal syndrome and ensure that appropriate treatment will be available.

5.9 Life-Threatening Respiratory Depression in Patients with Chronic Pulmonary Disease or in Elderly, Cachectic, or Debilitated Patients

( subsection added)

 

The use of SUBSYS in patients with acute or severe bronchial asthma in an unmonitored setting or in the absence of resuscitative equipment is contraindicated.

 

Patients with Chronic Pulmonary Disease: SUBSYS treated patients with significant chronic obstructive pulmonary disease or cor pulmonale, and those with a substantially decreased respiratory reserve, hypoxia, hypercapnia, or pre-existing respiratory depression are at increased risk of decreased respiratory drive including apnea, even at recommended dosages of SUBSYS.

 

Elderly, Cachectic, or Debilitated Patients: Life-threatening respiratory depression is more likely to occur in elderly, cachectic, or debilitated patients because they may have altered pharmacokinetics or altered clearance compared to younger, healthier patients .

 

Monitor such patients closely, particularly when initiating and titrating SUBSYS and when SUBSYS is given concomitantly with other drugs that depress respiration.

6 Adverse Reactions

6.2 Postmarketing Experience

(subsection added)

 

The following adverse reactions have been identified during post approval use of fentanyl. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure.

 

Serotonin syndrome: Cases of serotonin syndrome, a potentially life-threatening condition, have been reported during concomitant use of opioids with serotonergic drugs.

 

Adrenal insufficiency: Cases of adrenal insufficiency have been reported with opioid use, more often following greater than one month of use.

 

Anaphylaxis: Anaphylaxis has been reported with ingredients contained in SUBSYS.

 

Androgen deficiency: Cases of androgen deficiency have occurred with chronic use of opioids

(additions underlined)

 

 

The following serious adverse reactions are described, or described in greater detail, in other sections:

  • Life-Threatening Respiratory Depression

  • Interactions with Benzodiazepines and other CNS Depressants

  • Addiction, Abuse, and Misuse

  • Neonatal Opioid Withdrawal Syndrome

  • Serotonin Syndrome

  • Adrenal Insufficiency

  • Severe Hypotension

  • Gastrointestinal Adverse Reactions

  • Seizures

7 Drug Interactions

(Section revised, please refer to label)

8 Use in Specific Populations

8.1 Pregnancy

(PLLR conversion, please refer to label)

8.2 Lactation

Risk Summary

 

Fentanyl is present in breast milk. One published lactation study reports a relative infant dose of fentanyl of 0.024%. However, there is insufficient information to determine the effects of fentanyl on the breastfed infant and the effects of fentanyl on milk production.

 

Because of the potential for serious adverse reactions, including excess sedation and respiratory depression in a breastfed infant, advise patients that breastfeeding is not recommended during treatment with SUBSYS.

 

Clinical Considerations

 

Monitor infants exposed to SUBSYS through breast milk for excess sedation and respiratory depression. Withdrawal symptoms can occur in breastfed infants when maternal administration of an opioid analgesic is stopped, or when breast-feeding is stopped.

8.3 Females and Males of Reproductive Potential

(PLLR conversion)

 

Infertility

 

Chronic use of opioids may cause reduced fertility in females and males of reproductive potential. It is not known whether these effects on fertility are reversible.

8.5 Geriatric Use

(additions underlined)

 

Of the 359 patients in clinical studies of SUBSYS in breakthrough cancer pain, 27% were 60 years of age and older, 17% were 65 years of age and older, and 3% were 75 years of age and older. No difference

was noted in the safety profile of the group over 65 years of age as compared to younger patients in

SUBSYS clinical trials.

 

Elderly patients have been shown to be more sensitive to the effects of fentanyl when administered

intravenously, compared with the younger population. Therefore, monitor patients for respiratory depression and CNS effects when titrating SUBSYS in elderly patients.

 

Respiratory depression is the chief risk for elderly patients treated with opioids, and has occurred after large initial doses were administered to patients who were not opioid tolerant or when opioids were co- administered with other agents that depress respiration. Titrate the dosage of SUBSYS slowly in geriatric patients and monitor closely for signs of central nervous system and respiratory depression.


Fentanyl is known to be substantially excreted by the kidney, and the risk of adverse reactions to this drug may be greater in patients with impaired renal function. Because elderly patients are more likely to have decreased renal function, care should be taken in dose selection, and it may be useful to monitor renal function.

17 PCI/PI/MG (Patient Counseling Information/Patient Information/Medication Guide)

17 PATIENT COUNSELING INFORMATION

(Extensive revisions and additions, please refer to label)

Medication Guide

(Extensive revisions and additions, please refer to label)

Other

(Revisions to the Package Insert to incorporate the opioid analgesic template language)