IV to PO Conversion list
Per policy, these drugs may be converted from IV to PO in patients who meet criteria. 
Generic
(Brand)
Population IV Dose PO Dose Notes
azithromycin
(Zithromax)
adult 250 mg IV q24h 250 mg PO q24h Although azithromycin has low bioavailability, it is well-distributed to tissues.
500 mg IV q24h 500 mg PO q24h
pediatric 5-10 mg/kg q24h 5-10 mg/kg q24h
(max: 500 mg/day)
ciprofloxacin
(Cipro)
adult 200 mg IV q12h 250 mg PO q12h Avoid concurrent divalent and trivalent cation administration 2 hours before or 6 hours after. Avoid administration with tube feeds.
200 mg IV q24h 250 mg PO q24h
400 mg IV q8h 750 mg PO q12h
400 mg IV q12h 500 mg PO q12h
400 mg IV q24h 500 mg PO q24h
pediatric 10-15 mg/kg q8-12h
(max: 400 mg/dose or
40 mg/kg/day)
10-15 mg/kg q8-12h
(max: 750 mg/dose or
40 mg/kg/day)
clindamycin
(Cleocin)
adult 600 mg IV q8h 300 mg PO q6h OR
450 mg PO q8h
 
pediatric 10 mg/kg q6-8h
(max: 1800 mg/day)
10-13.5 mg/kg q8h
(max: 2700 mg/day)
doxycycline
(Vibramycin)
adult 100 mg IV q12h 100 mg PO q12h Avoid concurrent divalent and trivalent cation administration 1 hours before or 4 hours after. Avoid administration with tube feeds.
pediatric 2.2 mg/kg q12h
(max: 100 mg/dose)
2.2 mg/kg q12h
(max: 100 mg/dose)
famotidine
(Pepcid)
may convert from IV to PO on a mg-to-mg basis.
fluconazole
(Diflucan)
adult 100 mg IV q24h 100 mg PO q24h  
200 mg IV q24h 200 mg PO q24h
400 mg IV q24h 400 mg PO q24h
pediatric 3-12 mg/kg q24h
(max: 800 mg/dose)
3-12 mg/kg q24h
(max: 800 mg/dose)
levoFLOXacin
(Levaquin)
adult 500 mg IV q24h 500 mg PO q24h Avoid concurrent divalent and trivalent cation administration 2 hours before or 6 hours after. Avoid administration with tube feeds.
750 mg IV q24h 750 mg PO q24h
pediatric <5 y/o: 10 mg/kg q12h,
≥5 y/o: 10 mg/kg q24h
(max: 750 mg/day)
<5 y/o: 10 mg/kg q12h,
≥5 y/o: 10 mg/kg q24h
(max: 750 mg/day)
levothyroxine
(Synthroid)
may convert from IV to PO at twice the IV dose.
linezolid
(Zyvox)
adult 600 mg IV q12h 600 mg PO q12h  
pediatric <12 y/o: 10 mg/kg q8h,
≥12 y/o: 10 mg/kg q12h
(max: 600 mg/dose)
<12 y/o: 10 mg/kg q8h,
≥12 y/o: 10 mg/kg q12h
(max: 600 mg/dose)
metroNIDAZOLE
(Flagyl)
adult 500 mg IV q8h 500 mg PO q8h  
pediatric 10 mg/kg q6-8h
(max: 500 mg/dose or
40 mg/kg/day)
OR
30 mg/kg q24h
(max: 1.5g/dose)
10 mg/kg q6-8h
(max: 500 mg/dose or
50 mg/kg/day)
pantoprazole
(Protonix)
may convert from IV to PO on a mg-to-mg basis.
Rally Pack (MVI 10 mL, thiamine 100 mg, NS 0.9% 1000 mL) IV daily Multivitamin PO daily + thiamine 100 mg PO daily  
rifampin may convert from IV to PO on a mg-to-mg basis.
voriconazole
(Vfend) IV
weight based dosing
(3-4 mg/kg q12h)
200 mg PO q12h  
fixed (non-weight based) dosing may convert from IV to PO on a mg-to-mg basis.  
 I. Inclusion criteria. Patients must meet all of the following:
 • have received IV therapy for at least 48 hours
 • have an intact and functioning GI tract
 • are tolerating other medications by mouth, NG tube, or GT;
  Note: if no PO medications are ordered, patient must be tolerating diet
 • are tolerating liquid diet or more advanced diet or tube feedings for at least 24 hours
 • are clinically stable with no deterioration expected
  For antibiotic conversion, patients must meet all of these additional criteria:
 • have been afebrile (temperature < 100.4 F) for 24 hours
 • white blood cell (WBC) count is within normal limits
 II. Exclusion criteria. Patients will be excluded from conversion if any of the following are present:
 • NPO status
 • Diagnosis of severe illness: meningitis, brain abscess, endocarditis, Gram-positive bacteremia, and/or
  neutropenic fever in hematology/oncology patients
last updated: 02/06/2023

Pharmacy Contact Info:

Main Inpatient Pharmacy: ext 4599, 3503
Fax: 704-878-7283

Director of Pharmacy - Randi Raynor, PharmD: ext 4501
Clinical Coordinator - Laura Rollings, PharmD: ext 4597
Pharmacy Informaticist - Stephen Pringle, PharmD: ext 7645
Pharmacy Technician Supervisor - Amy Wingler, CPhT: ext 7385
Pharmacy Automation Coordinator (Omnicell) - Melissa Fulford, CPhT: ext 3556



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