Viagra, chemically known as sildenafil citrate, is a medication primarily used to treat erectile dysfunction (ED) in men. It works by increasing blood flow to the penis, facilitating an erection when sexually stimulated. This effect stems from its inhibition of phosphodiesterase-5 (PDE5), an enzyme that regulates blood vessel dilation.
Understanding Viagra’s mechanism is crucial. PDE5 normally limits blood flow; Viagra blocks this action. This allows for improved blood flow, leading to firmer and longer-lasting erections. Importantly, Viagra doesn’t spontaneously cause erections; sexual stimulation remains necessary.
While predominantly used for ED, Viagra also treats pulmonary arterial hypertension (PAH), a condition characterized by high blood pressure in the arteries leading to the lungs. In this context, its blood vessel dilation properties improve blood flow to the lungs. Always consult a healthcare professional for proper diagnosis and prescription.
Remember: Viagra’s effectiveness varies among individuals. Factors such as age, overall health, and other medications can influence its efficacy. Side effects are possible and range from mild (headache, flushing) to more serious. Seek immediate medical attention for severe side effects.
