MedicinePOM

Dicloxacillin Sodium

Penicillin antibiotic capsule for resistant staphylococcal infections.

Clinical information

Common uses

infections caused by penicillinase-producing staphylococci

Cautions

serious, occasionally fatal allergic reactions — not if penicillin-allergic
C. difficile diarrhoea can occur, even two months after treatment
people allergic to cephalosporins may also react

Interactions

tetracycline antibiotics — may work against penicillin, avoid
probenecid — raises penicillin levels
warfarin or dicumarol (blood thinners) — effect may be reduced
aminoglycoside antibiotics — inactivated if mixed together

Pregnancy: only if clearly needed — no evidence of harm

Reference information, not medical advice — always follow your doctor or pharmacist. Source: DailyMed, dailymed.nlm.nih.gov, dicloxacillin sodium label, setid 270c0839-c30c-475d-a505-e70855652c9e (accessed 2026-08-16)

Approved brands & formulations1

Brand name	Dosage form	Strength	Importer	Category
Dicloxacillin Sodium	Capsule	500mg	—	POM