Description
Viagra, generically known as sildenafil, is a medication primarily used to treat erectile dysfunction (ED). It works by increasing blood flow to the penis during sexual stimulation, enabling men to achieve and maintain an erection. Viagra is taken orally, and is most effective when taken about 30 minutes to 1 hour before sexual activity.
Viagra is renowned for its rapid onset of action and has been a significant advancement in the treatment of ED since its introduction in the late 1990s. It selectively inhibits the enzyme phosphodiesterase type 5 (PDE5), which is responsible for the breakdown of a compound called cyclic guanosine monophosphate (cGMP). By preventing PDE5 from acting, Viagra enhances the effects of nitric oxide, promoting relaxation of blood vessels in the penis and increasing erectile function.
Side Effects
Common side effects associated with Viagra may include:
- Headaches
- Flushing
- Indigestion
- Nasal congestion
- Dizziness
While most side effects are mild, some individuals may experience more severe reactions, such as vision changes or priapism (a prolonged and painful erection), requiring immediate medical attention.
Medical Uses
Viagra is primarily prescribed for:
- Erectile Dysfunction: It helps men with various underlying conditions, such as diabetes or cardiovascular issues, regain their sexual function.
- Pulmonary Arterial Hypertension: Off-label, sildenafil is used to treat pulmonary hypertension, a condition characterized by high blood pressure in the pulmonary arteries, which can improve exercise capacity and quality of life.
While sildenafil is not a cure for erectile dysfunction and does not increase sexual desire, its efficacy has made it a popular choice among healthcare providers and patients alike. Since its approval, Viagra has undergone various studies to establish its safety profile, and it remains a first-line treatment for patients experiencing ED.
