Viagra Eligibility Criteria and Medical Assessment
Who Is Eligible for Viagra Treatment?
Viagra is prescribed for adult men aged 18 and over who experience erectile dysfunction. However, eligibility extends beyond age requirements. Our UK-licensed prescribers conduct thorough medical assessments to ensure Viagra is safe and appropriate for each patient. This evaluation considers your cardiovascular health, current medications, and medical history. Men with well-controlled conditions like diabetes, high blood pressure, or depression may still be suitable candidates, though individual assessment is essential.
Medical Conditions That May Affect Eligibility
Certain medical conditions may make Viagra unsuitable or require dose adjustments. Men with severe heart disease, recent heart attacks or strokes within six months, or severe liver problems typically cannot take Viagra. Those with very low blood pressure or hereditary eye conditions affecting the retina also face restrictions. However, many common health conditions don't automatically disqualify patients. Our clinicians carefully evaluate each case, sometimes recommending the lower 25mg starting dose for men with mild cardiovascular concerns.
Dangerous Drug Interactions to Avoid
The most serious contraindication involves nitrate medications, including GTN spray, isosorbide tablets, or any heart medication containing nitrates. Combining these with Viagra can cause dangerously low blood pressure, potentially leading to fainting, heart attack, or stroke. Alpha-blockers for prostate problems or high blood pressure may also interact, though careful dose timing can sometimes allow safe use. Always disclose all medications, including over-the-counter drugs and supplements, during your consultation.
Common Side Effects and What to Expect
Most men tolerate Viagra well, but side effects can occur. The most frequently reported include headaches (affecting about 16% of users), facial flushing, indigestion, and nasal congestion. These effects are usually mild and temporary, often improving as your body adjusts to the medication. Visual disturbances like slight blue tinge to vision or increased light sensitivity affect fewer than 3% of users and typically resolve quickly.
Serious Side Effects Requiring Medical Attention
Whilst rare, some side effects need immediate medical care. Priapism - an erection lasting over four hours - requires emergency treatment to prevent permanent damage. Sudden vision loss or hearing problems, though extremely uncommon, warrant immediate medical attention. Chest pain, dizziness, or nausea during sexual activity should also prompt you to stop and seek medical advice. Severe allergic reactions are possible but very rare.
Choosing Between Viagra and Sildenafil
EverydayMeds offers both branded Viagra and generic sildenafil at checkout, allowing you to choose based on preference and budget. Both contain the same active ingredient and work identically - the generic version simply costs less. Some patients prefer the branded option for peace of mind, whilst others appreciate the cost savings of sildenafil. Our clinicians can advise on the most suitable option during your consultation.
Starting Treatment Safely
Most men begin with 50mg taken approximately one hour before sexual activity. Based on effectiveness and any side effects experienced, doses can be adjusted to 25mg or increased to 100mg. Never exceed one dose in 24 hours, and remember that sexual stimulation is still required - Viagra doesn't cause automatic erections. Food, particularly fatty meals, may delay the medication's onset, so timing around meals should be considered.
