Tadalafil overview (educational content only, not a substitute for medical advice) Tadalafil is a prescription medication best known under the brand name Cialis. It belongs to the class of phosphodiesterase‑5 (PDE5) inhibitors and is commonly prescribed for erectile dysfunction (ED), benign prostatic hyperplasia (BPH), and, under specialist supervision, pulmonary arterial hypertension (PAH). This article is […]