How Sildenafil Citrate Works and Dosage Guidelines
Mechanism of Action
Sildenafil citrate functions as a PDE5 inhibitor, blocking the phosphodiesterase type 5 enzyme to increase blood flow to the penis during sexual arousal. This medication does not cause automatic erections and requires sexual stimulation to be effective. The enhanced blood flow helps men with erectile dysfunction achieve and maintain suitable erections for sexual activity.
Dosage and Administration
Sildenafil citrate is available in three strengths: 25mg, 50mg, and 100mg tablets. Healthcare providers typically prescribe a starting dose of 50mg, which may be adjusted to 25mg or 100mg based on individual response and tolerability. The medication should be taken 30-60 minutes before anticipated sexual activity, with a maximum of one dose per 24-hour period.
Onset and Duration
Most men experience effects within 30-60 minutes of taking sildenafil citrate, though this may vary based on individual factors and food intake. Fatty meals can delay the onset of action. The medication's effects may last 4-6 hours, though this refers to the window when the medication may be effective, not the duration of any single erection.
Branded vs Generic Options
EverydayMeds offers both Viagra (the original branded version) and generic sildenafil citrate. Both contain the same active ingredient in identical doses and work in the same way. Patients can choose between branded or generic options at checkout based on personal preference, with generic versions typically offered at lower cost whilst maintaining equivalent effectiveness.
Safety Considerations
Sildenafil citrate requires a prescription following consultation with a UK-licensed healthcare professional. The medication is not suitable for everyone, particularly those taking nitrate medications, those with severe heart conditions, or recent stroke or heart attack history. A comprehensive medical assessment evaluates cardiovascular health, current medications, and medical history before prescribing.
