Absorption: Well absorbed following oral administration.
Distribution: Unknown.
Protein Binding: >99%.
Metabolism/Excretion: Eliminated via biliary excretion of unchanged drug with renal excretion of metabolites (37.5 in feces and 22.6% in urine), some metabolism occurs.
Half-life: 1819 days.
Contraindicated in:
Use Cautiously in:
CV: hypertension.
Derm: DRUG REACTION WITH EOSINOPHILIA AND SYSTEMIC SYMPTOMS (DRESS), STEVENS-JOHNSON SYNDROME (SJS), TOXIC EPIDERMAL NECROLYSIS (TEN), alopecia.
F and E: hyperkalemia, hypophosphatemia.
GI: HEPATOTOXICITY, diarrhea, ↑transaminases, nausea.
GU: acute renal failure (urate nephropathy).
Hemat: leukopenia, neutropenia, thrombocytopenia.
Neuro: paresthesia, peripheral neuropathy.
Resp: INTERSTITIAL LUNG DISEASE (RARE).
Misc: HYPERSENSITIVITY REACTIONS (INCLUDING ANAPHYLAXIS, ANGIOEDEMA, AND URTICARIA), INFECTION (INCLUDING LATENT TB AND VIRAL INFECTIONS).
Drug-Drug:
Therapeutic Classification: anti-multiple sclerosis agents
Pharmacologic Classification: immune response modifiers, pyrimidine synthesis inhibitors
NDC Code*