Spectinomycin: Uses, Dosage, Side Effects | MedexInfo

Spectinomycin

Rx

Generic NameSpectinomycin

Therapeutic ClassAminocyclitol antibiotic

Common Strength2 g vial (IM)

PregnancyUse only if clearly needed

Indications ▼

Uncomplicated Gonococcal Infection: Effective for treatment of urethral, cervical, and rectal infections caused by Neisseria gonorrhoeae, especially in patients allergic to penicillin.

Alternative Therapy: Used as a second-line option when first-line therapies (like ceftriaxone or penicillin) are contraindicated or not tolerated.

Sexually Transmitted Infection Management: Helps reduce transmission and prevent complications like pelvic inflammatory disease, epididymitis, and infertility associated with untreated gonorrhea.

Special Populations: Can be used in adults and children with appropriate dose adjustments; pregnancy only if clearly needed under strict medical supervision.

Combination Consideration: May need concomitant therapy for chlamydial co-infection as spectinomycin does not cover Chlamydia trachomatis.

Mechanism & Pharmacokinetics ▼

Mechanism: Binds to the 30S ribosomal subunit, inhibiting protein synthesis in susceptible bacteria.

Pharmacokinetics: Administered intramuscularly; peak plasma levels within 1 hour; primarily excreted unchanged in urine; half-life ~3–4 hours.

Dosage & Administration ▼

Indication	Dose	Frequency / Notes
Uncomplicated gonococcal infection (adult)	2 g intramuscularly	Single dose
Children	50 mg/kg IM (max 2 g)	Single dose

Note: Ensure proper hydration; adjust dosing in severe renal impairment.

Side Effects ▼

Pain at injection site

Gastrointestinal upset: nausea, vomiting, diarrhea

Allergic reactions: rash, pruritus, urticaria

Transient elevations in liver enzymes

Contraindications ▼

Hypersensitivity to spectinomycin or aminoglycosides

Severe renal impairment without dose adjustment

Drug Interaction ▼

No major drug interactions reported; caution with nephrotoxic drugs

Pregnancy & Lactation ▼

Use only if clearly needed; limited human data available

Excreted in breast milk in small amounts; consult physician

Clinical / Research Summary ▼

Clinical Role: Second-line therapy for gonococcal infections in penicillin-allergic patients.

Advantage: Single-dose intramuscular therapy; effective against N. gonorrhoeae resistant to penicillin.

Limitation: Injectable only; not effective against chlamydial co-infection; local pain at injection site common.

Monitoring: Renal function in patients with pre-existing kidney disease; observe for allergic reactions.

Patient Counseling Points ▼

Complete the full single-dose therapy as prescribed

Inform sexual partners and abstain until treatment is complete

Report rash, itching, or severe gastrointestinal upset

Maintain hydration; monitor urine output if renal impairment

Storage & Handling ▼

Store below 25°C

Protect from light

Keep out of reach of children

Brand Names (Bangladesh & Global) ▼

Bangladesh:

Tinobac 2 gm Injection

Global:

Trobicin®

Medical Disclaimer: For educational purposes only. Not a substitute for professional medical advice.

Reference Hubs:

• Drug Class: Aminocyclitol Antibiotics • Condition: Gonococcal Infection