sparsentan sparsentan sparsentan, sold under the brand name filspari, is a medication used for the treatment of primary immunoglobulin a nephropathy. sparsentan is an endothelin and angiotensin ii receptor antagonist. sparsentanclinical datatrade namesfilspariahfs/drugs.commicromedex detailed consumer informationlicense data us dailymed: sparsentan routes ofadministrationby mouthatc codenonelegal statuslegal status us: ℞-only identifierskeggd11776 it was approved for medical use in the united states in february 2023. medical uses sparsentan is indicated to reduce proteinuria in people with primary immunoglobulin a nephropathy. society and culture legal status sparsentan is approved in the us under accelerated approval based on reduction of proteinuria.