Codeine Sulfate (1 brand name, 2 dosage forms, 1 route)
Available dosage forms: TABLET, SOLUTION.
Routes of administration: ORAL.
Brand Names
- CODEINE SULFATE
Boxed Warning
Addiction, Abuse, and Misuse Because the use of codeine sulfate tablets 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 and reassess all patients regularly for the development of these behaviors and conditions [see Warnings and Precautions ( 5.1 ), Dosage and Administration ( 2.1 )]. Life-Threatening Respiratory Depression Serious, life-threatening, or fatal respiratory depression may occur with use of codeine sulfate tablets, especially during initiation or following a dosage increase. To reduce the risk of respiratory depression, proper dosing and titration of codeine sulfate tablets are essential [see Warnings and Precautions ( 5.2 )]. Accidental Ingestion Accidental ingestion of even one dose of codeine sulfate tablets, especially by children, can result in a fatal overdose of codeine [see Warnings and Precautions ( 5.2 )]. 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 codeine sulfate tablets and benzodiazepines or other CNS depressants for use in patients for whom alternative treatment options are inadequate [see Warnings and Precautions ( 5.3 ), Drug Interactions ( 7 )]. Neonatal Opioid Withdrawal Syndrome (NOWS) Advise pregnant women using opioids for an extended period of time of the risk of Neonatal Opioid Withdrawal Syndrome, which may be life-threatening if not recognized and treated. Ensure that management by neonatology experts will be available at delivery [see Warnings and Precautions ( 5.4 )]. Opioid Analgesic Risk Evaluation and Mitigation Strategy (REMS) Healthcare providers are strongly encouraged to complete a REMS-compliant education program and to counsel patients and careg
Indications and Usage
Codeine sulfate tablets are indicated for the management of mild to moderate pain, where treatment with an opioid is appropriate and for which alternative treatments are inadequate. L i m i t ations of Use: Because of the risks of addiction, abuse, misuse, overdose, and death, which can occur at any dosage or duration and persist over the course of therapy [see Warnings and Precautions ( 5.1 )], reserve opioid analgesics, including codeine sulfate tablets, for use in patients for whom alternative treatment options are ineffective, not tolerated, or would be otherwise inadequate to provide sufficient management of pain.
Contraindications
Codeine sulfate tablets are contraindicated for: All children younger than 12 years of age [see Warnings and Precautions ( 5.6 )]. Post-operative management in children younger than 18 years of age following tonsillectomy and/or adenoidectomy [see Warnings and Precautions ( 5.6 )]. Codeine sulfate tablets are also contraindicated in patients with: Significant respiratory depression [see Warnings and Precautions ( 5.2 )]. Acute or severe bronchial asthma in an unmonitored setting or in the absence of resuscitative equipment [see Warnings and Precautions (5.9)]. Concurrent use of monoamine oxidase inhibitors (MAOIs) or use of MAOIs within the last 14 days [see Warnings and Precautions (5.10), Drug Interactions ( 7 )]. Known or suspected gastrointestinal obstruction, including paralytic ileus [see Warnings and Precautions (5.14)]. Hypersensitivity to codeine (e.g., anaphylaxis) [see Adverse Reactions ( 6 )].
Adverse Reactions
The following serious adverse reactions are described, or described in greater detail, in other sections: Addiction, Abuse, and Misuse [see Warnings and Precautions ( 5.1 )] Life-Threatening Respiratory Depression [see Warnings and Precautions ( 5.2 )] Interactions with Benzodiazepines and Other CNS Depressants [see Warnings and Precautions ( 5.3 )] Neonatal Opioid Withdrawal Syndrome [see Warnings and Precautions ( 5.4 )] Ultra-Rapid Metabolism of Codeine and Other Risk Factors for Life-Threatening Respiratory Depression in Children [see Warnings and Precautions ( 5.6 )] Opioid-Induced Hyperalgesia and Allodynia [see Warnings and Precautions ( 5.8 )] Adrenal Insufficiency [see Warnings and Precautions ( 5.11 )] Severe Hypotension [see Warnings and Precautions ( 5.12 )] Gastrointestinal Adverse Reactions [see Warnings and Precautions ( 5.14 )] Seizures [see Warnings and Precautions ( 5.15 )] Withdrawal [see Warnings and Precautions ( 5.16 )] The following adverse reactions associated with the use of codeine were identified in clinical studies or postmarketing reports. Because some of these reactions were 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. Serious adverse reactions associated with codeine were respiratory depression and, to a lesser degree, circulatory depression, respiratory arrest, shock, and cardiac arrest. The most frequently observed adverse reactions with codeine administration included drowsiness, lightheadedness, dizziness, sedation, shortness of breath, nausea, vomiting, sweating, and constipation. Other adverse reactions included allergic reactions, euphoria, dysphoria, abdominal pain, and pruritis. Other less frequently observed adverse reactions expected from opioid analgesics, including codeine sulfate tablets, include: C ardiovascular System: faintness, flushing, hypotension, palpitations, syncope D i gestive System:
Drug Interactions
Table 1 includes clinically significant drug interactions with codeine sulfate tablets. Table 1: Clinically Significant Drug Interactions with Codeine Sulfate Tablets Inhibitors of CYP3A4 C li n i cal Impact: The concomitant use of codeine sulfate tablets with CYP3A4 inhibitors, may result in an increase in codeine plasma concentrations with subsequently greater metabolism by cytochrome CYP2D6, resulting in greater morphine levels, which could increase or prolong adverse reactions and may cause potentially fatal respiratory depression, particularly when an inhibitor is added after a stable dose of codeine sulfate tablets is achieved [see Warnings and Precautions ( 5.7 )]. After stopping a CYP3A4 inhibitor, as the effects of the inhibitor decline, it may result in lower codeine levels, greater norcodeine levels, and less metabolism via CYP2D6 with resultant lower morphine levels [see Clinical Pharmacology ( 12.3 ) ], resulting in decreased opioid efficacy or a withdrawal syndrome in patients who had developed physical dependence to codeine. Intervention: If concomitant use of CYP3A4 inhibitor is necessary, consider dosage reduction of codeine sulfate tablets until stable drug effects are achieved. Evaluate patients at frequent intervals for respiratory depression and sedation. If a CYP3A4 inhibitor is discontinued, consider increasing the codeine sulfate tablets dosage until stable drug effects are achieved. Assess for signs of opioid withdrawal. E xamples: Macrolide antibiotics (e.g., erythromycin), azole-antifungal agents (e.g. ketoconazole), protease inhibitors (e.g., ritonavir). CY P 3A4 Inducers C li n i cal Impact: The concomitant use of codeine sulfate tablets and CYP3A4 inducers can result in lower codeine levels, greater norcodeine levels, and less metabolism via 2D6 with resultant lower morphine levels [see Clinical Pharmacology ( 12.3 ) ], resulting in decreased efficacy or onset of a withdrawal syndrome in patients who have developed physical dependence [
Mechanism of Action
Codeine sulfate is an opioid agonist relatively selective for the mu-opioid receptor, but with a much weaker affinity than morphine. The analgesic properties of codeine have been speculated to come from its conversion to morphine, although the exact mechanism of analgesic action remains unknown.
Overdosage
C li n i cal Presentation: Acute overdose with codeine can be manifested by respiratory depression, somnolence progressing to stupor or coma, skeletal muscle flaccidity, cold and clammy skin, constricted pupils, and, in some cases, pulmonary edema, bradycardia, hypotension, hypoglycemia, partial or complete airway obstruction, atypical snoring, and death. Marked mydriasis rather than miosis may be seen with hypoxia in overdose situations [see Clinical Pharmacology ( 12.2 )]. Toxic leukoencephalopathy has been reported after opioid overdose and can present hours, days, or weeks after apparent recovery from the initial intoxication. T reatment of Overdose: In case of overdose, priorities are the reestablishment of a patent and protected airway and institution of assisted or controlled ventilation, if needed. Employ other supportive measures (including oxygen and vasopressors) in the management of circulatory shock and pulmonary edema as indicated. Cardiac arrest or arrhythmias will require advanced life-support measures. For clinically significant respiratory or circulatory depression secondary to opioid overdose, administer an opioid overdose reversal agent such as naloxone or nalmefene. Because the duration of opioid reversal is expected to be less than the duration of action of codeine in codeine sulfate tablets, carefully monitor the patient until spontaneous respiration is reliably reestablished. If the response to an opioid overdose reversal agent is suboptimal or only brief in nature, administer additional reversal agent as directed by the product’s prescribing information. In an individual physically dependent on opioids, administration of the recommended usual dosage of the opioid overdose reversal agent will precipitate an acute withdrawal syndrome. The severity of the withdrawal symptoms experienced will depend on the degree of physical dependence and the dose of the reversal agent administered. If a decision is made to treat serious respiratory depression