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Look Up > Drugs > Cinoxacin
Cinoxacin
Pronunciation
U.S. Brand Names
Generic Available
Pharmacological Index
Use
Pregnancy Risk Factor
Contraindications
Warnings/Precautions
Adverse Reactions
Overdosage/Toxicology
Drug Interactions
Mechanism of Action
Pharmacodynamics/Kinetics
Usual Dosage
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
(sin OKS a sin)

U.S. Brand Names
Cinobac® Pulvules®

Generic Available

No


Pharmacological Index

Antibiotic, Quinolone


Use

Treatment of urinary tract infections


Pregnancy Risk Factor

B


Contraindications

History of convulsive disorders, hypersensitivity to cinoxacin or any component or other quinolones


Warnings/Precautions

CNS stimulation may occur (tremor, restlessness, confusion, and very rarely hallucinations or seizures). Use with caution in patients with known or suspected CNS disorders or renal impairment. Not recommended in children <18 years of age, ciprofloxacin (a related compound), has caused a transient arthropathy in children; prolonged use may result in superinfection; modify dosage in patients with renal impairment.


Adverse Reactions

Generally well tolerated

Central nervous system: Headache, dizziness

Gastrointestinal: Heartburn, abdominal pain, GI bleeding, belching, flatulence, anorexia, nausea

<1%: Insomnia, confusion, seizures (rare), diarrhea, thrombocytopenia, photophobia, tinnitus


Overdosage/Toxicology

Symptoms of overdose include acute renal failure, seizures

GI decontamination and supportive care; not removed by peritoneal or hemodialysis


Drug Interactions

Decreased effect: Decreased urine levels with probenecid; decreased absorption with aluminum-, magnesium-, calcium-containing antacids

Increased serum levels: Probenecid


Mechanism of Action

Inhibits microbial synthesis of DNA with resultant inhibition of protein synthesis


Pharmacodynamics/Kinetics

Absorption: Oral: Rapid and complete; food decreases peak levels by 30% but not total amount absorbed

Distribution: Crosses the placenta; concentrates in prostate tissue

Protein binding: 60% to 80%

Half-life: 1.5 hours, prolonged in renal impairment

Time to peak serum concentration: Oral: Within 2-3 hours

Elimination: ~60% excreted as unchanged drug in urine


Usual Dosage

Children >12 years and Adults: Oral: 1 g/day in 2-4 doses for 7-14 days

Clcr 20-50 mL/minute: 250 mg twice daily

Clcr <20 mL/minute: 250 mg/day


Mental Health: Effects on Mental Status

May cause dizziness, insomnia or confusion; quinolones reported to cause restlessness, hallucinations, euphoria, depression, panic, and paranoia


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 prescribed dose with food. Maintain adequate hydration (2-3 L/day of fluids unless instructed to restrict fluid intake). Avoid antacid use. May cause dizziness; avoid driving or engaging in tasks that require alertness until response to drug is known. Small frequent meals, frequent mouth care, sucking lozenges, or chewing gum may reduce nausea or vomiting. Report skin rash, itching, redness, or swelling; pain, inflammation, or rupture of tendon; pain or burning on urination; or persistent diarrhea or vomiting. Breast-feeding precautions: Do not breast-feed.


Nursing Implications

Hold antacids for 3-4 hours after giving


Dosage Forms

Capsule: 250 mg, 500 mg


References

Sisca TS, Heel RC, and Romankiewicz JA, "Cinoxacin: A Review of Its Pharmacological Properties and Therapeutic Efficacy in the Treatment of Urinary Tract Infections," Drugs, 1983, 25(6):544-69.

Stricker BH, Slagboom G, Demaeseneer R, et al, "Anaphylactic Reactions to Cinoxacin," BMJ, 1988, 297(6661):1434-5.

Szarfman A, Chen M, and Blum MD, "More on Fluoroquinolone Antibiotics and Tendon Rupture," N Engl J Med, 1995, 332(3):193.


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