Clinical Information and Prescribing Guidelines
How Viagra Works
Viagra contains sildenafil citrate, a PDE5 inhibitor that blocks the phosphodiesterase type 5 enzyme. This mechanism increases blood flow to the penis during sexual arousal. Importantly, Viagra does not cause automatic erections - sexual stimulation remains necessary for the medication to be effective.
Dosage and Administration
The standard starting dose is 50mg, taken approximately 30-60 minutes before sexual activity. Based on individual response and tolerability, your prescriber may adjust this to 25mg or increase to a maximum of 100mg. Only one dose should be taken within any 24-hour period. Food, particularly fatty meals, may delay the onset of action.
Branded vs Generic Options
EverydayMeds offers both Viagra (branded by Pfizer) and sildenafil (generic version) at checkout. Both contain the same active ingredient and work identically. The generic sildenafil provides a more cost-effective option whilst maintaining the same clinical efficacy and safety profile as branded Viagra.
Eligibility and Safety Considerations
Viagra is suitable for adult men over 18 experiencing erectile dysfunction. Our clinical assessment evaluates cardiovascular health, current medications, and medical history to ensure safe prescribing. Men taking nitrates (GTN spray, isosorbide) cannot use Viagra due to dangerous blood pressure interactions. Those with severe heart disease, recent stroke, or very low blood pressure require careful evaluation.
Expected Effects and Duration
Most men experience improved erectile function within 30-60 minutes of taking Viagra. The effects may last 4-6 hours, though this does not mean an erection persists for this duration. The medication enhances natural erectile response to sexual stimulation during this timeframe.
Prescription Process
UK law requires a prescription for Viagra and sildenafil. Our online consultation involves completing a detailed medical questionnaire reviewed by a UK-licensed prescriber. This ensures the medication is clinically appropriate and safe based on your individual health profile and current medications.
