Viagra, or sildenafil, primarily treats erectile dysfunction (ED). It enhances blood flow to the penis, facilitating an erection during sexual stimulation. This improved blood flow is achieved by inhibiting an enzyme called phosphodiesterase-5 (PDE5).
How it works: PDE5 breaks down a chemical called cGMP, which is crucial for penile blood vessel relaxation. By blocking PDE5, Viagra allows cGMP levels to rise, leading to increased blood flow and firmer erections.
Important Note: Viagra doesn’t automatically cause an erection. Sexual stimulation is still required to trigger the erection process. It simply helps the body respond more effectively to that stimulation.
Beyond ED: While primarily known for ED, Viagra is also sometimes prescribed for pulmonary arterial hypertension (PAH), a condition causing high blood pressure in the arteries leading to the lungs. This demonstrates its broader impact on blood vessel function.
Before use: Consult a doctor. They can determine if Viagra is right for you and discuss potential side effects or interactions with other medications. Factors like heart health and existing conditions should be considered before taking Viagra.
Dosage: The recommended starting dose is usually 50mg, taken as needed, about an hour before sexual activity. Your doctor will adjust the dosage based on your individual response and needs.
