Black Cialis pills work by inhibiting the action of PDE5, an enzyme that is responsible for breaking down a molecule called cyclic guanosine monophosphate (cGMP). cGMP is responsible for relaxing the smooth muscle in the penis, allowing blood to flow in and creating an erection.
By inhibiting PDE5, buy vilitra 20 increases the levels of cGMP in the penis, allowing for greater blood flow and improved erectile function. Black Cialis pills contain a higher dose of tadalafil than other formulations of Cialis, which may provide more effective results in some men.
pro pharmacy shop 