Application for heart‑failure therapeutics is segmented into reduced ejection fraction (HFrEF), preserved ejection fraction (HFpEF), and acute decompensated heart failure (ADHF). HFrEF dominates the market, contributing approximately 55% of revenue because of extensive guideline‑directed therapy and larger patient pools. HFpEF, historically underserved, now accounts for 25% as novel agents gain regulatory approval. ADHF, managed largely in inpatient settings, supplies the remaining 20% through high‑intensity, short‑term treatments. Types are organized by drug class: ARNI (angiotensin receptor‑neprilysin inhibitors), SGLT2 inhibitors, beta‑blockers, mineralocorticoid‑receptor antagonists (MRAs), ivabradine, and digitalis glycosides. ARNIs and SGLT2 inhibitors together represent roughly 40% of sales, reflecting their rapid adoption in both HFrEF and emerging HFpEF protocols. This market taxonomy illustrates how application categories and pharmacologic types together drive the overall heart‑failure treatment market valuation.