Medically reviewed by Militian Inessa Mesropovna, PharmD. Last updated on 2020-04-05
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Kirin Sterile Powder is indicated in the treatment of acute gonorrheal urethritis and proctitis in the male and acute gonorrheal cervicitis and proctitis in the female when due to susceptible strains of Neisseria gonorrhoeae. Men and women with known recent exposure to gonorrhea should be treated as those known to have gonorrhea.
To reduce the development of drug-resistant bacteria and maintain the effectiveness of Kirin Sterile Powder and other antibacterial drugs, Kirin Sterile Powder should be used only to treat or prevent infections that are proven or strongly suspected to be caused by susceptible bacteria. When culture and susceptibility information are available, they should be considered in selecting or modifying antibacterial therapy. In the absence of such data, local epidemiology and susceptibility patterns may contribute to the empiric selection of therapy.
Preparation of Drug for Intramuscular Injection
Kirin Sterile Powder, 2 grams: reconstitute with 3.2 mL of Sterile Water for Injection, USP.
Shake vials vigorously immediately after adding Sterile Water for Injection, USP and before withdrawing dose. It is recommended that disposable syringes and needles be used. A 20-gaugc needle is recommended.
Intramuscular injections should be made deep into the upper outer quadrant of the gluteal muscle.
Adults (Men and Women)
Inject 5 mL intramuscularly for a 2-gram dose. This is also the recommended dose for patients being treated after failure of previous antibiotic therapy.
In geographic areas where antibiotic resistance is known to be prevalent, initial treatment with 4 grams (10 mL) intramuscularly is preferred. The 10-mL injection may be divided between two gluteal injection sites.
Store unreconstituted product at controlled room temperature 20° to 25°C (68° to 77°F). Store prepared suspension at controlled room temperature 20° to 25°C (68° to 77°F) and use within 24 hours.
The use of Kirin Sterile Powder is contraindicated in patients previously found hypersensitive to it.
Spectinomycin hydrochloride is not effective in the treatment of syphilis. Antibiotics used in high doses for short periods of time to treat gonorrhea may mask or delay the symptoms of incubating syphilis. Since the treatment of syphilis demands prolonged therapy with any effective antibiotic, patients being treated for gonorrhea should be closely observed clinically. All patients with gonorrhea should have a serologic test for syphilis at the time of diagnosis. Patients treated with Spectinomycin hydrochloride should have a follow-up serologic test for syphilis after three months.
The usual precautions should be observed with atopic individuals.
The clinical effectiveness of Kirin Sterile Powder should be monitored to detect evidence of development of resistance by Neisseria gonorrhoeae.
Prescribing Kirin Sterile Powder in the absence of a proven or strongly suspected bacterial infection or a prophylactic indication is unlikely to provide benefit to the patient and increases the risk of the development of drug-resistant bacteria.
Carcinogenesis, Mutagenesis, Impairment of Fertility
Genotoxicity of spectinomycin hydrochloride was evaluated in six assay test systems including two Ames tests, two micronucleus tests in mice, unscheduled DNA synthesis in rat primary hepatocytes, and a chromosomal aberration test in Chinese hamster ovary cells. Spectinomycin was not shown to be mutagenic or genotoxic in these tests.
No adverse effects on fertility or general reproductive performance were observed when spectinomycin was administered subcutaneously to rats at dose levels up to 300 mg/kg (equivalent to the recommended maximum human dose based on mg/m2). A three-generation reproduction study in rats administered spectinomycin hydrochloride orally at dose levels up to 400 mg/kg (equivalent to the recommended maximum human dose based on mg/m2) produced no evidence of drug-induced toxicity during growth, gestation, or lactation periods of any parental generation. Pregnancy rates of the 400 mg/kg/day groups were consistently lower than those of the control groups. A histopathological examination of the testes and ovaries of the third generation animals was normal.
Teratogenic Effects - Pregnancy Category B
Spectinomycin was not teratogenic or embryocidal when orally or subcutaneously administered to rats at doses of 300 mg/kg/day (equivalent to the recommended maximum human dose based on mg/m2). No teratogenic effects were observed when spectinomycin was administered intraperitoneally to mice or rats at dose levels of 400 or 1600 mg/kg/day, respectively. Spectinomycin was administered intramuscularly or subcutaneously to pregnant rabbits at dose levels up to 300 mg/kg/day (equivalent to the recommended maximum human dose based on mg/m2). Embryonic and fetal development were unaffected by treatment. Since there are no controlled studies of spectinomycin in pregnant women, and because animal reproduction studies are not always predictive of human responses, spectinomycin should be used during pregnancy only if clearly needed.
It is not known whether this drug is excreted in human milk. Because many drugs are excreted in human milk, caution should be exercised when spectinomycin is administered to a nursing woman.
Safety and effectiveness in the pediatric population have not been established. (See WARNINGS.)
The following reactions were observed during the single dose clinical trials: soreness at the injection site, urticaria, dizziness, nausea, chills, fever and insomnia.
During multiple dose subchronic tolerance studies in normal human volunteers, the following were noted: a decrease in hemoglobin, hematocrit and creatinine clearance; elevation of alkaline phosphatase, BUN and SGPT. In single and multiple dose studies in normal volunteers, a reduction in urine output was noted. Extensive renal function studies demonstrated no consistent changes indicative of renal toxicity.
A few cases of anaphylaxis or anaphylactoid reactions have been reported. If serious allergic reactions occur, the usual agents (epinephrine, corticosteroids, and/or antihistamines) should be available for emergency use. In cases of severe anaphylaxis, airway support and oxygen may also be required.
Information on overdosage in humans is not available. Hemodialysis has been reported to aid in the removal of intravenously administered spectinomycin from the body.
Kusumi R, Metzler C, Pass R; Pharmacokinetics of Spectinomycin in Volunteers with Renal Insufficiency, Chemotherapy, 27:95-98 (1981).