Understanding Sildenafil Eligibility and Safety Requirements
What is Sildenafil and How Does It Work?
Sildenafil is the active ingredient found in both branded Viagra and generic sildenafil tablets. As a PDE5 inhibitor, it works by blocking the phosphodiesterase type 5 enzyme, which increases blood flow to the penis during sexual arousal. EverydayMeds offers both Viagra (branded) and sildenafil (generic) options, allowing patients to choose based on their preferences whilst receiving the same effective treatment.
It's important to understand that sildenafil doesn't cause automatic erections - sexual stimulation is still required. The medication typically works within 30-60 minutes and effects can last 4-6 hours, though this doesn't mean erections last this duration.
Who Can Take Sildenafil Safely?
Sildenafil is suitable for adult men aged 18 and over who have been diagnosed with erectile dysfunction. To ensure safe use, patients must complete a comprehensive clinical assessment with a UK-licensed prescriber who will evaluate their medical history, current medications, and overall cardiovascular health.
Ideal candidates are generally healthy men without serious underlying heart conditions, who aren't taking medications that could interact dangerously with sildenafil. The starting dose is typically 50mg, which can be adjusted to 25mg or 100mg based on effectiveness and how well the medication is tolerated.
Important Contraindications: Who Should NOT Take Sildenafil
Several groups of people should not take sildenafil due to serious safety risks. Men taking nitrate medications (such as GTN spray or isosorbide) must never use sildenafil as this combination can cause a dangerous drop in blood pressure. Similarly, those taking riociguat for pulmonary hypertension should avoid sildenafil.
Other contraindications include severe heart disease, recent heart attack or stroke within the past six months, severe liver impairment, very low blood pressure, and hereditary degenerative retinal disorders. Men with allergies to sildenafil or any tablet ingredients should also avoid this medication.
Common Sildenafil Side Effects and What to Expect
Most men tolerate sildenafil well, but some may experience mild side effects. Common reactions include headaches, facial flushing, indigestion, nasal congestion, and dizziness. These effects are usually temporary and mild, often diminishing as the body adjusts to the medication.
Less common but more serious side effects can include sudden vision changes, hearing problems, or prolonged erections lasting more than four hours (priapism). If any serious side effects occur, immediate medical attention should be sought.
Drug Interactions and Precautions
Sildenafil can interact with various medications, so it's crucial to disclose all current medications during consultation. Beyond the dangerous interactions with nitrates and riociguat, caution is needed with alpha-blockers, some antifungal medications, HIV protease inhibitors, and certain antibiotics.
Alcohol should be limited when taking sildenafil as it can increase the risk of side effects and reduce the medication's effectiveness. Grapefruit juice may also affect how the body processes sildenafil and should be avoided.
Getting Started with Sildenafil Treatment
The process begins with an online consultation where patients complete a detailed health questionnaire. This assessment helps determine suitability and identifies any potential risks or contraindications. UK-licensed prescribers review each application individually, ensuring personalised care and appropriate prescribing.
For those deemed suitable, treatment typically starts with a 50mg dose taken 30-60 minutes before sexual activity. Only one tablet should be taken in any 24-hour period. Patients can choose between branded Viagra or generic sildenafil based on their preferences, with both options providing identical therapeutic effects.
