Who Should Not Take Viagra or Sildenafil
Critical Drug Interactions and Contraindications
The most serious safety concern with Viagra and sildenafil involves dangerous interactions with nitrate medications. Men taking GTN spray, isosorbide mononitrate, or any nitrate-based heart medication must never use sildenafil, as this combination can cause a life-threatening drop in blood pressure. Similarly, riociguat (used for pulmonary hypertension) creates dangerous interactions and is absolutely contraindicated.
Cardiovascular Health Considerations
Men with severe heart conditions, recent heart attack or stroke (within six months), or very low blood pressure should not use Viagra or sildenafil. Sexual activity itself places demands on the cardiovascular system, and these medications can affect blood pressure and heart function. EverydayMeds' clinical assessment evaluates your cardiovascular health to determine suitability for treatment.
Medical Conditions Requiring Caution
Certain medical conditions require careful evaluation before prescribing sildenafil. Men with severe liver impairment may require dose adjustments or alternative treatments. Those with hereditary retinal disorders or previous episodes of non-arteritic anterior ischaemic optic neuropathy (NAION) face increased risks. Kidney disease, anatomical penile deformities, and conditions predisposing to priapism (prolonged erection) also require specialist consideration.
Common Side Effects and Warning Signs
Most men tolerate Viagra and sildenafil well, but common side effects include headaches, facial flushing, nasal congestion, and mild digestive upset. These typically resolve within hours. However, seek immediate medical attention if you experience sudden vision loss, hearing problems, chest pain during sexual activity, or an erection lasting longer than four hours. These rare but serious complications require urgent treatment.
Proper Usage and Dosage Guidelines
Safe use requires following prescribed dosages carefully. The typical starting dose is 50mg, taken 30-60 minutes before sexual activity, with a maximum of one dose per 24 hours. Never exceed 100mg in 24 hours or combine with other ED treatments. Alcohol consumption should be moderate, as excessive drinking can increase side effects and reduce effectiveness. Fatty meals may delay the medication's onset.
Choosing Between Viagra and Generic Sildenafil
EverydayMeds offers both branded Viagra and generic sildenafil, allowing you to choose based on preference and budget. Generic sildenafil contains the same active ingredient as Viagra but costs significantly less, making it an excellent value option. Both undergo the same clinical assessment process and carry identical safety considerations. The choice between branded and generic is purely personal preference, as both provide equivalent effectiveness and safety profiles.
Clinical Assessment and Ongoing Monitoring
Our UK-licensed prescribers conduct thorough clinical assessments before prescribing either Viagra or sildenafil. This evaluation includes reviewing your medical history, current medications, cardiovascular health, and any contraindications. Regular monitoring ensures continued suitability, especially if your health circumstances change or you develop new medical conditions requiring different medications.
