Sildenafil citrate, the active ingredient in Viagra, works by increasing blood flow to the penis. This allows for easier achievement and maintenance of an erection. The medication belongs to a class of drugs called phosphodiesterase-5 (PDE5) inhibitors.
How it works: Sildenafil inhibits PDE5, an enzyme that breaks down cyclic GMP, a molecule crucial for penile erection. By blocking PDE5, sildenafil allows higher levels of cyclic GMP to persist, leading to increased blood flow and facilitating an erection in response to sexual stimulation.
Important note: Sildenafil does not cause an erection on its own; sexual stimulation is necessary.
Dosage: The typical starting dose is 50 mg. Your doctor may adjust the dose based on your response and individual needs. The maximum recommended dose is 100 mg, but this is not always suitable for everyone.
Side effects: Common side effects include headache, flushing, nasal congestion, and visual disturbances. More serious side effects are rare but require immediate medical attention.
Contraindications: Sildenafil is not suitable for individuals with certain heart conditions, low blood pressure, or those taking specific medications, including nitrates. Consult your doctor before use.
Interactions: Sildenafil may interact with other medications. Always inform your doctor about all medications and supplements you are currently taking.
Seeking medical advice: Always consult a healthcare professional before using sildenafil or any medication for erectile dysfunction. They can help determine if it’s appropriate for you and discuss potential risks and benefits.
