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Viagra is a prescription medication that may help treat erectile dysfunction in eligible men. Understanding who can safely take Viagra is crucial for effective treatment. This guide explores the eligibility criteria, safety considerations, and medical requirements for Viagra treatment. At EverydayMeds, we offer both branded Viagra and generic sildenafil options following a clinical assessment by our UK-licensed prescribers.
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When PDE5 is suppressed, blood is able to flow more freely through the body—including to the (you guessed it) penis.

More blood flow to the penis means harder, more satisfying erections once you're sexually stimulated.
Viagra (sildenafil) is suitable for adult men aged 18 and over who experience erectile dysfunction. Candidates must be able to complete a comprehensive clinical assessment conducted by a qualified prescriber. This evaluation examines cardiovascular health, current medications, and medical history to determine if Viagra is appropriate. At EverydayMeds, patients can choose between branded Viagra or generic sildenafil, both containing the same active ingredient but at different price points.
Men with stable cardiovascular health are generally suitable candidates for Viagra. However, those with severe heart disease, recent heart attacks, or strokes within the past six months should not use this medication. Blood pressure considerations are also important - men with very low blood pressure (severe hypotension) may not be eligible. The medication can cause a mild reduction in blood pressure, which is usually well-tolerated in healthy individuals.
Certain medications make Viagra unsafe to use. Men taking nitrate medications such as GTN spray or isosorbide for heart conditions cannot use Viagra due to dangerous blood pressure interactions. Those prescribed riociguat for pulmonary hypertension are also ineligible. Alpha-blockers used for prostate problems may require dose adjustments. Our clinical assessment carefully reviews all current medications to identify potential interactions.
While there is no upper age limit for Viagra use, older men may require more careful assessment due to increased likelihood of cardiovascular conditions or medication interactions. Men of all ages should be in reasonable general health and able to engage in sexual activity safely. Lifestyle factors such as alcohol consumption and recreational drug use are considered during the assessment process.
Several medical conditions may influence Viagra suitability. Men with severe liver impairment may not be eligible, as the body cannot process the medication properly. Those with hereditary degenerative retinal disorders should exercise caution. Kidney problems may require dose adjustments rather than complete exclusion. Men with bleeding disorders or those taking blood-thinning medications require careful evaluation.
EverydayMeds requires all patients to complete a thorough clinical questionnaire reviewed by UK-licensed prescribers. This assessment covers medical history, current medications, cardiovascular health, and specific erectile dysfunction symptoms. The questionnaire helps determine the most appropriate treatment option and dosage. Patients can then choose between branded Viagra or generic sildenafil based on their preference and budget.
Eligible men typically begin with a 50mg dose, taken 30-60 minutes before sexual activity. Depending on effectiveness and tolerability, the dose may be adjusted to 25mg or 100mg. Only one dose should be taken within 24 hours. Sexual stimulation is still required, as Viagra does not cause automatic erections but enhances the body's natural response to arousal.
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