Complete BNF Dosage Information for Sildenafil
Standard Sildenafil Dosing Protocol
According to BNF guidelines, sildenafil for erectile dysfunction should be initiated at 50mg approximately one hour before sexual activity. This starting dose is appropriate for most men and provides an effective balance between therapeutic benefit and potential side effects. The dose may be adjusted based on individual response and tolerability.
Dosage Adjustment Guidelines
If the 50mg dose proves insufficient, it may be increased to 100mg, which represents the maximum recommended daily dose. Conversely, if side effects occur or the response is adequate at a lower dose, reduction to 25mg may be appropriate. Elderly patients or those with hepatic impairment should typically start with 25mg. It's important to note that only one dose should be taken within any 24-hour period.
Administration and Timing
Sildenafil should be taken on an empty stomach when possible, as food may delay absorption and reduce effectiveness. The medication typically begins working within 30-60 minutes, with peak plasma concentrations reached after approximately one hour. Effects may last up to four hours, though this doesn't mean an erection will persist for this duration.
Available Formulations
EverydayMeds provides both generic sildenafil and branded Viagra in all three BNF-approved strengths. Patients can choose between these options during checkout, with both containing the same active ingredient sildenafil citrate. The choice often comes down to personal preference and cost considerations, as both formulations are clinically equivalent.
Clinical Considerations
Dose adjustments may be necessary for patients with certain medical conditions. Those with severe renal impairment may require dose reduction, whilst patients taking certain medications such as ritonavir or other potent CYP3A4 inhibitors should start with 25mg. A thorough medical assessment ensures appropriate dosing for individual circumstances.
