Penicillins

Penicillin

Route

Natural penicillins

Penicillin G (parenteral/aqueous)

Parenteral

Penicillin G benzathine

Parenteral (IM only)

Penicillin G procaine

Parenteral

Penicillin V potassium

Oral

Aminopenicillins

Ampicillin

Oral or parenteral

Ampicillin/sulbactam

Parenteral

Amoxicillin

Oral

Amoxicillin/clavulanate

Oral

Penicillinase-resistant (antistaphylococcal) penicillins

Dicloxacillin

Oral

Nafcillin

Oral or parenteral

Oxacillin

Oral or parenteral

Broad-spectrum (antipseudomonal) penicillin

Piperacillin/tazobactam

Parenteral

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