<prompt> Drug of choice for chronic gout isAllopurinolFebuxostatProbenecidSulfinpyrazone  <response>: Ref: Katzung 14th ed. P 661DOC for chronic goutperiod between acute gout attacks: AllopurinolMOA: Xanthine oxidase inhibitorWhen initiating allopurinol therapy, colchicine or NSAID should be used until steady-state serum uric acid is normalized or decreased to less than 6mgdL and they should be continued for 6 months or longer.Initial dose: 50-100mgdaySide effect:Precipitation of gout thats why initially given with NSAIDS or colchicineGI intolerance NVDPeripheral neuritis and necrotizing vasculitisBone marrow suppression - Aplastic anemiaHepatotoxicity and interstitial nephritisMaculopapular rash and exfoliative dermatitisCataractDOC for acute gout attack: Probenecid NSAID except AspirinFebuxostat: Also, a xanthine oxidase inhibitor. Used in patients with intolerance to allopurinol or not responding to it.Uricosuric agents like Probenecid, Sulfinpyrazone, Lesinurad can also be used in treatment of gout especially when allopurinol or febuxostat is contraindicated. 