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Critical Safety Information Before Taking Viagra
Who Should Not Take Viagra
Viagra is not suitable for everyone. Men taking nitrate medications (such as GTN spray or isosorbide tablets) must never use Viagra, as this combination can cause a dangerous drop in blood pressure. Similarly, those taking riociguat for pulmonary hypertension face serious risks. Men with severe heart disease, recent heart attack or stroke (within six months), severe liver problems, or very low blood pressure should avoid this medication entirely.
Understanding Drug Interactions
Several medications can interact dangerously with Viagra. Alpha-blockers used for prostate problems or high blood pressure may cause significant blood pressure reduction when combined with sildenafil. Certain antibiotics, antifungals, and HIV medications can increase Viagra levels in the blood, potentially causing severe side effects. Always inform your prescriber about all medications, including over-the-counter medicines and supplements.
Proper Dosage and Timing Guidelines
Viagra typically starts at 50mg, taken 30-60 minutes before sexual activity. The dose may be adjusted to 25mg or 100mg based on effectiveness and tolerability. Crucially, only one dose should be taken in any 24-hour period. Taking more than prescribed will not improve effectiveness but significantly increases the risk of dangerous side effects, including prolonged erections requiring emergency treatment.
Common Side Effects and When to Seek Help
Most men tolerate Viagra well, but side effects can occur. Common reactions include headaches, facial flushing, indigestion, and nasal congestion. More serious side effects requiring immediate medical attention include chest pain, prolonged erections lasting over four hours, sudden vision or hearing loss, and severe dizziness. These symptoms warrant stopping the medication and seeking urgent medical care.
Generic Sildenafil vs Branded Viagra
Generic sildenafil contains the same active ingredient as branded Viagra and works identically. The main difference is cost - generic versions are typically significantly cheaper whilst providing equivalent effectiveness and safety. EverydayMeds offers both options, allowing patients to choose based on their preferences and budget after completing the same thorough clinical assessment process.
Clinical Assessment Requirements
All Viagra prescriptions require a comprehensive clinical assessment by a UK-licensed prescriber. This evaluation examines cardiovascular health, current medications, medical history, and lifestyle factors that might affect treatment safety. The assessment helps determine if Viagra is appropriate and identifies the safest starting dose for individual circumstances.
