Clinical Pharmacology Details


Nalbuphine Hcl


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Indications & Dose:

Note: 3 6 mg IM is equivalent to 10 mg IM morphine


Adult


Moderate to severe pain.


Adults:


10 to 20 mg S.C., I.M., or I.V. q 3 to 6 hours, p.r.n., or around the clock. Maximum, 160 mg daily.


• Myocardial infarction:


10-30 mg by slow i.v inj, repeat dose 20 mg may be given within 30 minutes if necessary.


• Supplement to balanced anesthesia:


Induction 0.3-3 mg/kg IV administered over 10 15 min period; maintenance 0.25 0.50 mg/kg as required


Children


Up to 0.3mg/Kg repeated once or twice as necessary.


Overdose and treatment


Nalbuphine overdose most commonly causes CNS depression, respiratory depression, and miosis. Other acute toxic effects include hypotension, bradycardia, hypothermia, shock, apnea, cardiopulmonary arrest, circulatory collapse, pulmonary edema, and seizures.


To treat acute overdose, first establish adequate respiratory exchange via a patent airway and ventilation as needed; give an opioid antagonist (naloxone) to reverse respiratory depression, Because the duration of action of nalbuphine is longer than that of naloxone, repeated naloxone dosing is needed. Don’t give naloxone in the absence of significant respiratory or CV depression. Monitor vital signs closely.


Provide symptomatic and supportive treatment such as continued respiratory support and correction of fluid or electrolyte imbalance. Monitor laboratory values, vital signs, and neurologic status closely. 

Contraindications:

Side Effects:

Cautions:

Precautions:

Addictive personality, increased intracranial pressure, MI (acute), severe heart disease, respiratory depression, hepatic disease, renal disease, sulfite sensitivity 

Interaction:

Drugs


Barbiturates: Additive respiratory and CNS depression


Cimetidine: Inhibition of narcotic hepatic metabolism; additive CNS effects


Rifampin: May reduce narcotic concentrations and precipitate withdrawal

Warnings:

Adverse Effects:

Lactations:

Special Precautions:

Counselling:

Side Effects Or Adverse Reactions:

CNS: Confusion, crying, dizziness, dreams, dysphoria (high doses), euphor-iaj hear he, sedation;  vprjigoCv.-Bradycardia, change in blood pressure, palpitations


EENT: Blurred vision, diplopia, miosis, tinnitus


GI: Anorexia; constipatiofr, cramps: dry mouth, nausea, vomiting


GU: Dysuria, increased urinary output, urinary retention, urinary urgency


RESP: Respiratory depression


SKIN: Bruising, diaphoresis, flushing, pruritus, rash, urticaria


MISC: Flushing, speech difficulty, warmth

Patient And Carer Advice: