Sildenafil Increases the p50 and Shifts the Oxygen-Hemoglobin ...

Introduction: Sildenafil (Viagra®) is a selective phosphodiesterase type 5 (PDE5) inhibitor that block the breakdown of cyclic guanyl monophosphate (cGMP) leading to relaxation of the smooth muscles of the corpus cavernous and an increase in blood flow resulting in penile erection. It is hypothesized that sildenafil will increase the release of oxygen from erythrocytes and shift the oxygen ...

Viagra side effect: Red blood cell count increased - eHealthMe

We study 67,531 people who take Viagra (sildenafil citrate) or have Red blood cell count increased. No report of Red blood cell count increased is found in people who take Viagra. The phase IV clinical study is created by eHealthMe based on reports from the FDA, and is updated regularly. Your drugs can behave differently in the real world.