Essential Safety Information and Contraindications
Dangerous Drug Interactions to Avoid
The most critical warning for Viagra users is to never combine it with nitrate medications. This includes GTN spray, isosorbide mononitrate, or any chest pain medication containing nitrates. This combination can cause a dangerous drop in blood pressure that may be life-threatening. If you experience chest pain after taking Viagra, do not use GTN - seek immediate medical attention instead.
Other medications requiring caution include alpha-blockers for blood pressure, riociguat for pulmonary hypertension, and certain HIV medications. Always inform your prescriber about all medications you're taking during consultation.
Lifestyle Factors That Reduce Effectiveness
Excessive alcohol consumption can significantly reduce Viagra's effectiveness and increase the risk of side effects like dizziness or low blood pressure. While one or two units of alcohol are generally acceptable, heavy drinking should be avoided. Large, fatty meals can delay Viagra's absorption, meaning it may take longer to work. For optimal results, take Viagra on an empty stomach or after a light meal.
Who Should Not Take Viagra
Viagra is not suitable for men with severe heart conditions, recent heart attack or stroke (within 6 months), severe liver problems, or very low blood pressure. Men taking nitrates for chest pain cannot safely use Viagra. The medication is only prescribed after a thorough clinical assessment to ensure it's safe for your individual circumstances.
At EverydayMeds, both branded Viagra and generic sildenafil are available following consultation with our UK-licensed prescribers. Patients can choose between the branded or generic option at checkout, with sildenafil offering the same active ingredient at a lower cost.
Dosage and Timing Warnings
Never exceed one dose of Viagra in 24 hours, regardless of effectiveness. Taking multiple doses increases the risk of serious side effects including dangerous drops in blood pressure. If your current dose isn't effective, consult your prescriber about adjusting the strength rather than taking additional tablets.
