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Pronunciation |
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(byoo
pre NOR
feen) |
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U.S. Brand
Names |
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Buprenex® |
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Generic
Available |
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No |
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Synonyms |
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Buprenorphine Hydrochloride |
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Pharmacological Index |
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Analgesic, Narcotic |
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Use |
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Management of moderate to severe pain |
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Restrictions |
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C-V |
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Pregnancy Risk
Factor |
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C |
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Contraindications |
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Hypersensitivity to buprenorphine or any component |
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Warnings/Precautions |
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May cause respiratory depression - use caution in patients with respiratory
disease or pre-existing respiratory depression. Potential for drug dependency
exists, abrupt cessation may precipitate withdrawal. Use caution in elderly,
debilitated, or pediatric patients. Use with caution in patients with depression
or suicidal tendencies, or in patients with a history of drug abuse. Tolerance,
psychological and physical dependence may occur with prolonged use. Use with
caution in patients with hepatic, pulmonary, or renal function impairment. May
cause CNS depression, which may impair physical or mental abilities. Patients
must be cautioned about performing tasks which require mental alertness (ie,
operating machinery or driving). Effects with other sedative drugs or ethanol
may be potentiated. Elderly may be more sensitive to CNS depressant and
constipating effects. Use with caution in patients with head injury or increased
ICP, biliary tract dysfunction, pancreatitis, patients with history of ileus or
bowel obstruction, glaucoma, hyperthyroidism, adrenal insufficiency, prostatic
hypertrophy, urinary stricture, CNS depression, toxic psychosis, alcoholism,
delirium tremens, or kyphoscoliosis. Partial antagonist activity may precipitate
acute narcotic withdrawal in opioid-dependent individuals. |
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Adverse
Reactions |
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>10%: Central nervous system: Sedation
1% to 10%:
Cardiovascular: Hypotension
Central nervous system: Respiratory depression, dizziness, headache
Gastrointestinal: Vomiting, nausea
Ocular: Miosis
Miscellaneous: Diaphoresis
<1%: Hypertension, tachycardia, bradycardia, euphoria, slurred speech,
confusion, xerostomia, nervousness, depression, constipation, pruritus, urinary
retention, paresthesia, blurred vision, diplopia, dyspnea, cyanosis
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Overdosage/Toxicology |
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Symptoms of overdose include CNS depression, pinpoint pupils, hypotension,
bradycardia
Treatment of an overdose includes support of the patient's airway,
establishment of an I.V. line, and administration of naloxone 2 mg I.V. (0.01
mg/kg for children) with repeat administration as necessary up to a total of 10
mg |
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Drug
Interactions |
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Barbiturate anesthetics may produce additive respiratory and CNS depression
Respiratory and CV collapse was reported in a patient who received diazepam
and buprenorphine |
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Stability |
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Protect from excessive heat
(>40°C/104°F) and light
Incompatible with diazepam, lorazepam |
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Mechanism of
Action |
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Buprenorphine exerts its analgesic effect via high affinity binding to
m opiate receptors in the CNS; displays both agonist
and
antagonist activity |
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Pharmacodynamics/Kinetics |
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Onset of analgesia: Within 10-30 minutes
Duration: 6-8 hours
Absorption: I.M., S.C.: 30% to 40%
Distribution: Vd: 97-187 L/kg
Protein binding: High
Metabolism: Mainly in the liver; undergoes extensive first-pass metabolism
Half-life: 2.2-3 hours
Elimination: 70% excreted in feces via bile and 20% in urine as unchanged
drug |
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Usual Dosage |
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I.M., slow I.V.:
Elderly: 0.15 mg every 6 hours; elderly patients are more likely to suffer
from confusion and drowsiness compared to younger patients
Long-term use is not recommended |
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Monitoring
Parameters |
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Pain relief, respiratory and mental status, CNS depression, blood
pressure |
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Mental Health: Effects
on Mental Status |
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Drowsiness is common; rare reports of euphoria |
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Mental Health:
Effects on Psychiatric
Treatment |
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Concurrent use with benzodiazepines or barbiturates may result in CNS or
respiratory depression |
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Dental Health: Local
Anesthetic/Vasoconstrictor
Precautions |
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No information available to require special precautions |
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Dental Health:
Effects on Dental Treatment |
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No effects or complications reported |
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Patient
Information |
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If self-administered, use exactly as directed (do not increase dose or
frequency). While using this medication, do not use alcohol and other
prescription or OTC medications (especially sedatives, tranquilizers,
antihistamines, or pain medications) without consulting prescriber. May cause
dizziness, drowsiness, confusion, or blurred vision (use caution when driving,
climbing stairs, or changing position - rising from sitting or lying to
standing, or when engaging in tasks requiring alertness until response to drug
is known). You may experience nausea or vomiting (frequent mouth care, small
frequent meals, sucking lozenges, or chewing gum may help). Report unresolved
nausea or vomiting; difficulty breathing or shortness of breath; excessive
sedation or unusual weakness; rapid heartbeat or palpitations.
Pregnancy/breast-feeding precautions: Inform prescriber if you are or intend
to be pregnant. Consult prescriber if breast-feeding. |
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Nursing
Implications |
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Gradual withdrawal of drug is necessary to avoid withdrawal
symptoms |
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Dosage Forms |
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Injection, as hydrochloride: 0.3 mg/mL (1 mL) |
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References |
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"Drugs for Pain," Med Lett Drugs Ther, 1998, 40(1033):79-84.
Gal TJ,
"Naloxone Reversal of Buprenorphine-Induced Respiratory Depression," Clin
Pharmacol Ther, 1989, 45(1):66-71.
Harcus AH, Ward AE, and Smith DW,
"Buprenorphine: Experience in an Elderly Population of 975 Patients During a Year's Monitored Release,"
Br J Clin Pract, 1980, 34(5):144-6.
Jain PN and Shah SC,
"Respiratory Depression Following Combination of Epidural Buprenorphine and Intramuscular Ketorolac,"
Anaesthesia, 1993, 48(10):898-9.
Mac Evilly M and O'Carroll C,
"Hallucinations After Epidural Buprenorphine," Br Med J, 1989,
298(6678):928-9.
O'Connor PG, Oliveto AH, Shi JM, et al,
"A Randomized Trial of Buprenorphine Maintenance for Heroin Dependence in a Primary Care Clinic for Substance Users Versus a Methadone Clinic,"
Am J Med, 1998, 105(2):100-5.
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