The short version
Only one company currently supplies this market — there is no backup if it stumbles.
Market view
3 marketed package NDCs · 1 active manufacturer
Most dispensed: 10 mg · Tablet, Film Coated · #30 tablet, film coateds/bottle · 10 mg · Tablet, Film Coated · #1 bottle/carton / 30 tablet, film coated in 1 bottle · 10 mg · Tablet, Film Coated · #1 blister pack/carton / 15 tablet, film coated in 1 blister pack
Only one company currently supplies this market — there is no backup if it stumbles.
Other molecules FDA puts in Endothelin Receptor Antagonist, with whether each is in shortage right now. Same class is not the same drug — substitution is a clinical decision, and this is a supply picture, not a recommendation.
Expand a strength to see its dosage forms, then package sizes, then each manufacturer and NDC. Click an NDC for its full detail page.