Dicloxacillin Side Effects

Not all side effects for dicloxacillin may be reported. You should always consult a doctor or healthcare professional for medical advice. Side effects can be reported to the FDA here.

For the Consumer

Applies to dicloxacillin: oral capsules

Side effects include:

GI effects (nausea, vomiting, epigastric distress, loose stools, diarrhea, flatulence); hypersensitivity reactions.

For Healthcare Professionals

Applies to dicloxacillin: oral capsule, oral powder for reconstitution

Gastrointestinal

Gastrointestinal side effects have included nausea, vomiting, diarrhea, stomatitis, black or hairy tongue, epigastric discomfort, flatulence, loose stools, and pseudomembranous colitis.

Hematologic

Hematologic side effects have included neutropenia, leukopenia, and thrombocytopenia. Other penicillins have been associated with agranulocytosis and bone marrow depression.

Hepatic

Hepatic side effects have included transient changes in SGOT, hepatotoxicity, and cholestatic hepatitis. Serum transaminase levels may take several weeks to return to normal following discontinuation of therapy.

Hypersensitivity

Hypersensitivity reactions have included rash, fever, eosinophilia, pruritus, urticaria, angioneurotic edema, anaphylactic reactions (bronchospasm, hypotension, vascular collapse, death), laryngeal edema, laryngospasm, serum-sickness-like symptoms, fever, chills and myalgias.

Renal

Renal side effects have rarely included renal failure. Increases in serum creatinine and acute renal failure have been reported with higher doses (3 to 4 grams daily) using an intravenous formulation, in postoperative patients with advanced age. Other penicillins have been associated with renal tubular damage and interstitial nephritis (rash, fever, eosinophilia, hematuria, proteinuria, renal insufficiency).

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