Viagra is a well-known oral medication containing sildenafil as its active ingredient. It is used to treat erectile dysfunction in adult men, which is the inability to achieve or maintain an erection sufficient for satisfactory sexual performance. First approved in the late 1990s, Viagra has since become one of the most trusted treatments for this condition. It works by enhancing the body’s natural response to sexual stimulation, helping men regain confidence and improve the quality of their intimate relationships.

Mechanism of Action
Sildenafil, the active compound in Viagra, belongs to a class of medications known as phosphodiesterase type five inhibitors. When a man is sexually aroused, the body releases nitric oxide in the penis. This triggers a chain of reactions that increase the levels of cyclic guanosine monophosphate, a substance that relaxes the smooth muscles in the blood vessels of the penis and allows more blood to flow in.

Normally, the enzyme phosphodiesterase type five breaks down this substance, which can cause the erection to fade too quickly. Sildenafil blocks this enzyme, helping to maintain higher levels of cyclic guanosine monophosphate, and in turn, supporting a stronger and longer-lasting erection. It is important to note that Viagra only works in the presence of sexual stimulation and does not cause an automatic erection.

Viagra is used for:

• Treating erectile dysfunction in adult men

• Helping achieve and maintain a firm erection during sexual activity

• Enhancing sexual performance and confidence

Adverse Effects
Like all medications, Viagra may cause some side effects. The most commonly reported effects include headache, facial flushing, dizziness, nasal congestion, and upset stomach. Some men may experience visual changes such as blurred vision or a slight blue tint.

Less common side effects include muscle aches, back pain, or skin rash. In rare cases, serious adverse reactions may occur, such as chest pain, irregular heartbeat, or a prolonged erection lasting more than four hours. These situations require immediate medical attention.

Viagra should not be used by men taking nitrate medications or those with certain heart or blood pressure conditions. It is essential to consult a healthcare provider before starting Viagra to ensure it is safe based on individual health status.