Avaforce 100 mg is commonly marketed as containing avanafil, a phosphodiesterase type-5 (PDE5) inhibitor used to treat erectile dysfunction (ED). Avanafil works by supporting the natural blood-flow mechanism involved in achieving an erection during sexual stimulation. Avanafil is considered a relatively fast-acting PDE5 inhibitor, although the onset can vary between individuals. Its effect is temporary and does not mean an erection should last continuously.