Viagra enhances erections by increasing blood flow to the penis. This happens because it inhibits the enzyme phosphodiesterase-5 (PDE5).
PDE5 normally breaks down cyclic GMP, a molecule that relaxes the muscles in the penis, allowing blood vessels to dilate. By blocking PDE5, Viagra allows cyclic GMP to persist, resulting in increased blood flow and a firmer erection.
Sexual stimulation is still necessary to trigger the erection; Viagra doesn’t cause erections on its own. It simply improves the body’s natural response to sexual stimulation.
The effects typically last for four to five hours. Individual responses vary, and factors like age and overall health influence duration and effectiveness.
Remember to consult a doctor before using Viagra, particularly if you have underlying health conditions or are taking other medications. They can assess your suitability for the drug and discuss potential side effects.
