Common STI Treatments
Urethritis / Cervicitis:
Chlamydia trachomatis
Recommended: Doxycycline 100 mg BID x 7 d (not recommended for pregnant women)
Alternative: Azithromycin 1 g x 1 or Levofloxacin 500 mg Qd x 7 d or Amoxicillin 500 mg TID x 7 d
Gonorrhea
Recommended: Ceftriaxone: 500 mg IM x 1 or 1g if patient is > 150 kg
Alternative: Gentamicin 240 mg IM x 1 or Azithromycin 2g PO x 1 or Cefixime 800 mg PO x 1
* remember to treat both GC/CT together given common coinfections
Trichomoniasis
Recommended: Metronidazole
- women: 500 mg BID x 7 day
- men : 2 mg PO x 1
Alternative: Tinidazole 2 g PO x 1
Epididymitis
Suspect GC/CT? see above treatments
If you are concerned about enteric organisms, treat with Levofloxacin 500 mg PO Qd x 10 d (in addition to the above if concerned for STI as well)
Proctitis
Ceftriaxone 500 mg IM (1g if patient > 150 kg) x 1 and Doxycycline 100 mg PO BID x 7 d
Pubic Lice
Recommended: Permethrin 1% rinse or Pyrethrin with piperonyl butoxide
Alternative: Ivermectin 250 ug/kg OI, repeat in 7-14 d
Genital Herpes
Acyclovir
- first time: 400 mg PO TID x 7-10 d
- recurrence (episodic therapy): 800 mg PO BID x 5 d
- recurrence (suppressive therapy): 400mg PO BID
Alternative: Valacyclovir (less frequent dosing, more expensive)
- first time: 1g BID x7-10 days
- recurrence (episodic therapy): 1g PO daily x5d
- recurrence (suppressive therapy): 500mg - 1g PO BID
* remember, things are more complicated for pregnant women, children, those that are immunocompromised, sexual assault victims, and those that have comorbid infections - look further guidelines up!
* PID or abscesses will likely require intervention / IV antibiotics / admission
* don't forget to treat partners too
* educate / counsel to prevent reinfection and drug side effects!
Reference:
Workowski KA, Bachmann LH, Chan PA, et al. Sexually Transmitted Infections Treatment Guidelines, 2021. MMWR Recomm Rep 2021;70(No. RR-4):1–187. DOI: http://dx.doi.org/10.15585/mmwr.rr7004a1external icon.