FDA label
What is dicloxacillin used for?
The FDA-approved uses of dicloxacillin, quoted from the Indications and Usage section of its DailyMed label.
Source: DailyMed SPL label file dated 2026-10-23. Publisher page
The FDA label says: “To reduce the development of drug-resistant bacteria and maintain the effectiveness of dicloxacillin sodium capsules and other antibacterial drugs, dicloxacillin sodium capsules should be used only to treat or prevent infections that are proven or strongly suspected to be caused by susceptible bacteria. When culture and susceptibility information are available, they should be considered in sele...”
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Dicloxacillin Sodium, capsule
Indications and Usage, quoted from the label by Redpharm Drug (ANDA216845). Cross-references to other label sections are left out.
To reduce the development of drug-resistant bacteria and maintain the effectiveness of dicloxacillin sodium capsules and other antibacterial drugs, dicloxacillin sodium capsules should be used only to treat or prevent infections that are proven or strongly suspected to be caused by susceptible bacteria. When culture and susceptibility information are available, they should be considered in selecting or modifying antibacterial therapy. In the absence of such data, local epidemiology and susceptibility patterns may contribute to the empiric selection of therapy.
Dicloxacillin sodium capsules are indicated in the treatment of infections caused by penicillinase-producing staphylococci which have demonstrated susceptibility to the drug. Cultures and susceptibility tests should be performed initially to determine the causative organisms and their sensitivity to the drug (see CLINICAL PHARMACOLOGY – Susceptibility Testing ).
Dicloxacillin sodium capsules may be used to initiate therapy in suspected cases of resistant staphylococcal infections prior to the availability of laboratory test results. The penicillinase-resistant penicillins should not be used in infections caused by organisms susceptible to penicillin G. If the susceptibility tests indicate that the infection is due to an organism other than a resistant staphylococcus, therapy should not be continued with a penicillinase-resistant penicillin.
Source: DailyMed label, set id 58e6ee7a-8237-ec66-e063-6394a90a5cae, version 1, effective August 13, 2026. NDC 67296-2307, one of 10 listings for this product.
Questions
What is dicloxacillin used for?
The FDA label says: “To reduce the development of drug-resistant bacteria and maintain the effectiveness of dicloxacillin sodium capsules and other antibacterial drugs, dicloxacillin sodium capsules should be used only to treat or prevent infections that are proven or strongly suspected to be caused by susceptible bacteria. When culture and susceptibility information are available, they should be considered in sele...”
What drug class is dicloxacillin?
FDA lists dicloxacillin in the Penicillin-class Antibacterial established pharmacologic class.
Does this page cover off-label uses or dosing?
No. This page shows only the Indications and Usage section of the FDA label. Ask a pharmacist or prescriber about dosing.