Vidalista 2.5 mg contains tadalafil, a phosphodiesterase type-5 (PDE5) inhibitor used to treat erectile dysfunction (ED). For some men, a low-dose tadalafil regimen may be part of a broader approach to improving sexual health and addressing factors associated with ED. Tadalafil works by enhancing the natural erection process. During sexual stimulation, it helps increase blood flow to the penis by slowing the breakdown of cyclic guanosine monophosphate (cGMP). This can make it easier to achieve and maintain an erection.