Viagra, known by its generic name sildenafil, is a medication widely recognized for its use in treating erectile dysfunction (ED) in men. It works by increasing blood flow to the penis, helping to achieve and maintain an erection when sexual stimulation occurs. Viagra belongs to a class of drugs known as phosphodiesterase type 5 (PDE5) inhibitors. It was the first oral treatment approved for ED by the FDA in 1998 and has since become one of the most well-known medications for this condition. Viagra is taken orally, typically about an hour before sexual activity, and its effects can last for up to four hours. However, it does not increase sexual desire and requires sexual arousal to work effectively. Viagra is also used to treat pulmonary arterial hypertension (PAH) under the brand name Revatio.
When using Viagra, it's crucial to adhere strictly to your doctor's instructions and carefully read the label that accompanies the medication. Viagra can cause side effects that may impair your ability to drive or operate machinery safely. Common side effects include headaches, flushing, indigestion, nasal congestion, dizziness, and visual disturbances. Although rare, more serious side effects such as severe allergic reactions, chest pain, or an erection lasting more than four hours (priapism) require immediate medical attention. It's also essential to inform your doctor about all other medications you are taking, as Viagra can interact with them, leading to potentially dangerous effects. Always prioritize safety and ensure you are in a suitable condition to perform tasks like driving when using this medication.