Streptomycin


Generic Medicine Info
Indications and Dosage
Intramuscular
Tularaemia
Adult: 1-2 g daily in divided doses for 7-14 days until the patient is afebrile for 5-7 days.
Child: 15 mg/kg bid for at least 10-14 days. Max: 2 g daily.

Intramuscular
Bacterial endocarditis
Adult: Streptococcal endocarditis: 1 g bid for 1 wk, then 500 mg bid for the 2nd wk. Enterococcal endocarditis: 1 g bid for 2 wk then 500 mg bid for an additional 4 wk. Doses are given in combination w/ penicillin.
Child: Enterococcal endocarditis: 20-30 mg/kg daily in 2 divided doses, in combination w/ penicillin.
Elderly: Streptococcal endocarditis: >60 yr 500 mg bid for the entire 2 wk period.

Intramuscular
Tuberculosis
Adult: 15 mg/kg as a single dose daily. Max: 1 g daily. As part of intermittent regimen: 25-30 mg/kg 2-3 times wkly. Max: 1.5 g/dose.
Child: 20-40 mg/kg as a single dose daily. Max: 1 g daily. As part of intermittent regimen: 25-30 mg/kg 2-3 times wkly. Max: 1.5 g/dose.
Elderly: >40 yr Max: 500-750 mg daily.

Intramuscular
Plague
Adult: 2 g daily in 2 divided doses for a minimum of 10 days.
Child: 30 mg/kg daily in 2-3 divided doses. Max: 2 g daily.

Intramuscular
Bacteraemia, Brucellosis, Meningitis, Pneumonia, Urinary tract infections
Adult: For concomitant use w/ other agents and as 2nd line agent: 1-2 g daily in divided doses 6-12 hrly. Max: 2 g daily.
Child: 20-40 mg/kg daily in divided doses 6-12 hrly.
Renal Impairment
Dosage adjustment needed.
Reconstitution
Add 4.2 mL, 3.2 mL, or 1.8 mL of sterile water for inj to prepare a soln containing approx 200 mg, 250 mg, or 400 mg, respectively, of streptomycin per mL.
Contraindications
Hypersensitivity to streptomycin and other aminoglycosides.
Special Precautions
Patient w/ neuromuscular disorders (e.g. myasthenia gravis), pre-existing vertigo, or hearing loss. Renal impairment. Elderly, childn. Pregnancy and lactation.
Adverse Reactions
Neurotoxic reactions (e.g. vestibular and cochlear function disturbance, optic nerve dysfunction, peripheral neuritis, arachnoiditis, encephalopathy); paraesthesia of face, rash, fever, angioneurotic oedema, eosinophilia; exfoliative dermatitis, azotemia, leucopenia, thrombocytopenia, pancytopenia, haemolytic anaemia, muscular weakness, amblyopia.
Potentially Fatal: Resp paralysis from neuromuscular blockade, Clostridium difficile-associated diarrhoea, anaphylaxis; rarely, nephrotoxicity.
IM/IV/Parenteral: D
Monitoring Parameters
Monitor renal and auditory function.
Drug Interactions
Additive neurotoxic and nephrotoxic effect w/ neomycin, kanamycin, gentamicin, cefaloridine, paronomycin, viomycin, polymyxin B, colistin, tobramycin, and ciclosporin. Enhanced ototoxic and nephrotoxic effect w/ ethacrynic acid, mannitol, furosemide and possibly other diuretics. May enhance the resp depressant effect of neuromuscular blockers. Increased risk of nephrotoxicity w/ cephalosporins. Reduced excretion w/ NSAIDs.
Action
Description: Streptomycin inhibits bacterial protein synthesis by binding directly to the 30S ribosomal subunits causing faulty peptide sequence to form in the protein chain.
Pharmacokinetics:
Absorption: Not absorbed from the GI tract. Rapidly absorbed (IM). Time to peak plasma concentration: 0.5-2 hr.
Distribution: Rapidly distributed into most body tissues and fluids except the brain. Crosses the placenta and enters breast milk. Plasma protein binding: Approx 1/3 of the drug in circulation.
Excretion: Via urine, approx 30-90% as unchanged drug. Half-life: Approx 2.5 hr.
Chemical Structure

Chemical Structure Image
Streptomycin

Source: National Center for Biotechnology Information. PubChem Database. Streptomycin, CID=19649, https://pubchem.ncbi.nlm.nih.gov/compound/Streptomycin (accessed on Jan. 23, 2020)

Storage
Store between 15-30°C. Protect from light.
MIMS Class
Aminoglycosides / Anti-TB Agents
References
Anon. Streptomycin. Lexicomp Online. Hudson, Ohio. Wolters Kluwer Clinical Drug Information, Inc. https://online.lexi.com. Accessed 22/10/2014.

Buckingham R (ed). Streptomycin. Martindale: The Complete Drug Reference [online]. London. Pharmaceutical Press. https://www.medicinescomplete.com. Accessed 22/10/2014.

McEvoy GK, Snow EK, Miller J et al (eds). Streptomycin Sulfate. AHFS Drug Information (AHFS DI) [online]. American Society of Health-System Pharmacists (ASHP). https://www.medicinescomplete.com. Accessed 22/10/2014.

Streptomycin Sulfate Injection, Powder, Lyophilized, for Solution. DailyMed. Source: U.S. National Library of Medicine. https://dailymed.nlm.nih.gov/dailymed/. Accessed 22/10/2014.

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