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Capreomycin
Pronunciation
U.S. Brand Names
Generic Available
Synonyms
Pharmacological Index
Use
Pregnancy Risk Factor
Contraindications
Warnings/Precautions
Adverse Reactions
Overdosage/Toxicology
Drug Interactions
Mechanism of Action
Pharmacodynamics/Kinetics
Usual Dosage
Reference Range
Mental Health: Effects on Mental Status
Mental Health: Effects on Psychiatric Treatment
Dental Health: Local Anesthetic/Vasoconstrictor Precautions
Dental Health: Effects on Dental Treatment
Patient Information
Nursing Implications
Dosage Forms
References

Pronunciation
(kap ree oh MYE sin)

U.S. Brand Names
Capastat® Sulfate

Generic Available

No


Synonyms
Capreomycin Sulfate

Pharmacological Index

Antibiotic, Miscellaneous; Antitubercular Agent


Use

Treatment of tuberculosis in conjunction with at least one other antituberculosis agent


Pregnancy Risk Factor

C


Contraindications

Known hypersensitivity to capreomycin sulfate


Warnings/Precautions

Use in patients with renal insufficiency or pre-existing auditory impairment must be undertaken with great caution, and the risk of additional eighth nerve impairment or renal injury should be weighed against the benefits to be derived from therapy. Since other parenteral antituberculous agents (eg, streptomycin) also have similar and sometimes irreversible toxic effects, particularly on eighth cranial nerve and renal function, simultaneous administration of these agents with capreomycin is not recommended. Use with nonantituberculous drugs (ie, aminoglycoside antibiotics) having ototoxic or nephrotoxic potential should be undertaken only with great caution.


Adverse Reactions

>10%:

Otic: Ototoxicity [subclinical hearing loss (11%), clinical loss (3%)], tinnitus

Renal: Nephrotoxicity (36%, increased BUN)

1% to 10%: Hematologic: Eosinophilia (dose-related, mild)

<1%: Vertigo, hypokalemia, leukocytosis, thrombocytopenia (rare); pain, induration, and bleeding at injection site; hypersensitivity (urticaria, rash, fever)


Overdosage/Toxicology

Symptoms of overdose include renal failure, ototoxicity, thrombocytopenia

Treatment is supportive


Drug Interactions

Increased effect/duration of nondepolarizing neuromuscular blocking agents

Additive toxicity (nephro- and ototoxicity, respiratory paralysis): Aminoglycosides (eg, streptomycin)


Mechanism of Action

Capreomycin is a cyclic polypeptide antimicrobial. It is administered as a mixture of capreomycin IA and capreomycin IB. The mechanism of action of capreomycin is not well understood. Mycobacterial species that have become resistant to other agents are usually still sensitive to the action of capreomycin. However, significant cross-resistance with viomycin, kanamycin, and neomycin occurs.


Pharmacodynamics/Kinetics

Absorption: Oral: Poor absorption necessitates parenteral administration

Half-life: Dependent upon renal function and varies with creatinine clearance; 4-6 hours

Time to peak serum concentration: I.M.: Within 1 hour

Elimination: Essentially excreted unchanged in the urine; no significant accumulation after greater than or equal to 30 day of 1 g/day dosing in patients with normal renal function


Usual Dosage

I.M.:

Adults: 15-20 mg/kg/day up to 1 g/day for 60-120 days, followed by 1 g 2-3 times/week

Dosing interval in renal impairment: Adults:

Clcr >100 mL/minute: Administer 13-15 mg/kg every 24 hours

Clcr 80-100 mL/minute: Administer 10-13 mg/kg every 24 hours

Clcr 60-80 mL/minute: Administer 7-10 mg/kg every 24 hours

Clcr 40-60 mL/minute: Administer 11-14 mg/kg every 48 hours

Clcr 20-40 mL/minute: Administer 10-14 mg/kg every 72 hours

Clcr <20 mL/minute: Administer 4-7 mg/kg every 72 hours


Reference Range

10 mg/mL


Mental Health: Effects on Mental Status

May cause dizziness


Mental Health: Effects on Psychiatric Treatment

None reported


Dental Health: Local Anesthetic/Vasoconstrictor Precautions

No information available to require special precautions


Dental Health: Effects on Dental Treatment

No effects or complications reported


Patient Information

Take as prescribed; do not discontinue without consulting prescriber. Maintain adequate hydration (2-3 L/day of fluids unless instructed to restrict fluid intake) to reduce incidence of nephrotoxicity. While taking this medication, routine blood tests and auditory tests will be necessary. Report any hearing loss, dizziness or vertigo, persistent nausea or vomiting, loss of appetite, or increased frequency of urination. Pregnancy/breast-feeding precautions: Inform prescriber if you are or intend to be pregnant. Consult prescriber if breast-feeding.


Nursing Implications

The solution for injection may acquire a pale straw color and darken with time; this is not associated with a loss of potency or development of toxicity


Dosage Forms

Injection, as sulfate: 100 mg/mL (10 mL)


References

Davidson PT and Le HQ, "Drug Treatment of Tuberculosis - 1992," Drugs, 1992, 43(5):651-73.

"Drugs for Tuberculosis," Med Lett Drugs Ther, 1993, 35(908):99-101.

Iseman MD, "Treatment of Multidrug-Resistant Tuberculosis," N Engl J Med, 1993, 329(11):784-91.


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