Relapsing Fever Medication
- Author: Kauser Akhter, MD; Chief Editor: Michael Stuart Bronze, MD more...
Medication Summary
The goals of pharmacotherapy are to reduce morbidity and to prevent complications. In louse-borne relapsing fever (LBRF), single-dose therapy is recommended, as only one relapse typically occurs. Therapy for tick-borne relapsing fever (TBRF) is extended to 7-10 days, as this form is characterized by multiple relapses.
Antibiotics
Class Summary
Borrelia species that cause relapsing fever are sensitive to antibiotic agents.
Doxycycline (Adoxa, Doryx, Monodox, Vibramycin, Vibratab)
Broad-spectrum, synthetically derived bacteriostatic antibiotic in the tetracycline class. Almost completely absorbed, concentrates in bile, and is excreted in urine and feces as a biologically active metabolite in high concentrations. Inhibits protein synthesis and, thus, bacterial growth by binding to 30S and possibly 50S ribosomal subunits of susceptible bacteria. May block dissociation of peptidyl t-RNA from ribosomes, causing RNA-dependent protein synthesis to arrest.
Erythromycin (E-Mycin, Eryc; Ery-Tab)
Inhibits bacterial growth, possibly by blocking dissociation of peptidyl t-RNA from ribosomes, causing RNA-dependent protein synthesis to arrest.
Tetracycline (Sumycin, Achromycin V)
Treats gram-positive and gram-negative infections, as well as mycoplasmal, chlamydial, and rickettsial infections. Inhibits bacterial protein synthesis by binding with 30S and possibly 50S ribosomal subunit(s).
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