Beta-Lactam Generic, Brand & Dosing

Cefadroxil

Duracef

1st gen

1-2g PO Q12-24H

Cefazolin

Ancef, Kefzol

1st gen

1-2g IV/IM Q8H

Cephalexin

Keflex

1st gen

250-500mg PO Q6H

Cefoxitin

Mefoxin

2nd gen

1-2g IV/IM Q4-6H

Cefprozil

Cefzil

2nd gen

250-500gm PO Q12-24H

Cefaclor

Ceclor

2nd gen

250-500mg PO Q8H

Cefuroxime

Ceftin, Zinacef

2nd gen

0.25-1.5gm PO/IV/IM Q8-12H

Cefotetan

Cefotan

2nd gen

1-2gm IV/IM Q12H

Cefdinir

Omnicef

3rd gen

300mg PO Q12-24H

Ceftazidime

Fortaz

3rd gen

1-2gm IV/IM Q8-12H

Pseudomonas coverage

Ceftriaxone

Rocephin

3rd gen

1-2gm IV/IM Q12-24H

Hepatic metabolism

Cefotaxime

Claforan

3rd

1-2gm Iv/IM Q6-8H

Active metabolite

Cefixime

Suprax

3rd gen

200-400mg PO Q12-24H

Cefpodoxime

Vantin (dc brand name)

3rd gen

200mg PO Q12H

Cefepime

Maxipime

4th gen

0.5-2gm IV/IM Q8-12H

Pseudomonas coverage

Ceftaroline

Teflaro

5th gen

600mg IV Q12H

Ceftobiprole

Zevtera

5th gen

667mg IV Q8H

Imipenem/Cilastin

Primaxin

1gm Q6H IV

Imipenem/Cilastin/Relebactam

Recarbrio

1.25gm Q6H IV

Meropenem

Merrem

2gm Q8H IV/IM

Meropenem/Vaborbactam

Vabomere

4gm Q8H IV

Ertapenem

Invanz

1gm QD IV/IM

Nafcillin

Nallpen, Unipen

1-2gm Q4-6H IV

Oxacillin

Bactocill

1-2gm Q6-4H IV

Dicloxacillin special administration instructions

Take 1hr before or 2hrs after meals with at least 120mL of water to prevent esophageal irritation or injury

Piperacillin/Tazobactam

Zosyn

Mild to moderate: 3.375gm Q6H IV

Amoxicillin

Amoxil

500mg-1gm PO Q8-12H

Amoxicillin/Clavulanate IR/ER

Augmentin

IR: 500mg PO Q8-12H or 875mg PO Q12H

ER: 2gm PO Q12H with food

Ampicillin/Sulbactam

Unasyn

1.5-3gm PO Q6H; max 12gm per day

Aztreonam

Azactam

2gm Q8H IV

sulbactam/durlobactam

Xacduro

1gm Q6H IV for HAP/VAP