How Sildenafil Tablets Work for Erectile Dysfunction
The Science Behind Sildenafil Tablets
Sildenafil belongs to a class of medications called PDE5 inhibitors (phosphodiesterase type 5 inhibitors). When a man becomes sexually aroused, the body naturally releases nitric oxide, which triggers increased blood flow to the penis. The PDE5 enzyme can break down this process, but sildenafil tablets work by blocking PDE5, allowing improved blood flow to continue. This mechanism helps men achieve and maintain erections suitable for sexual activity. It's important to understand that sildenafil requires sexual stimulation to work - it does not cause automatic erections.
Available Dosages and How to Take Sildenafil
Sildenafil tablets are available in three strengths: 25mg, 50mg, and 100mg. Most men start with the 50mg dose, which can be adjusted up to 100mg or down to 25mg based on effectiveness and tolerability. The tablet should be taken 30-60 minutes before planned sexual activity, and effects can last 4-6 hours. Only one dose should be taken in any 24-hour period. Food, particularly fatty meals, may delay the onset of action, so taking sildenafil on an empty stomach or after a light meal may improve effectiveness.
Choosing Between Generic Sildenafil and Branded Viagra
At EverydayMeds, patients can choose between generic sildenafil tablets and branded Viagra at checkout. Both contain the same active ingredient (sildenafil citrate) and work identically. The main difference is cost - generic sildenafil typically offers significant savings whilst providing the same clinical effectiveness. Branded Viagra may be preferred by some patients for psychological reasons or brand familiarity. Both options undergo the same rigorous quality standards and require the same prescription process following clinical assessment.
Who Can Take Sildenafil Tablets
Sildenafil is suitable for adult men aged 18 and over who experience erectile dysfunction. Before prescribing, a UK-licensed prescriber must conduct a clinical assessment to evaluate cardiovascular health, current medications, and medical history. This ensures the medication is safe and appropriate for each individual. Men with certain heart conditions, those taking nitrate medications, or with severe liver problems may not be suitable candidates for sildenafil treatment.
Important Safety Considerations
Sildenafil tablets have an excellent safety profile when used appropriately, but certain precautions must be observed. Never combine sildenafil with nitrate medications (such as GTN spray) as this can cause dangerous drops in blood pressure. Men with heart problems should discuss their cardiovascular health thoroughly during consultation. Common mild side effects may include headache, flushing, or indigestion, which typically resolve quickly. Rare but serious side effects require immediate medical attention, including prolonged erections lasting over 4 hours or sudden vision changes.
