Vardenafil vs. Sildenafil vs. Tadalafil https://www.dosepharmacy.com/vilitra-60mg-tablet Vardenafil, sildenafil, and tadalafil are all oral medications that belong to a class of drugs known as phosphodiesterase type 5 (PDE5) inhibitors. They are commonly prescribed to treat erectile dysfunction (ED), a condition that affects a significant number of men globally.