How Viagra Works and What Effects to Expect
Viagra's Mechanism of Action
Viagra contains sildenafil citrate, which belongs to a class of medications called PDE5 inhibitors. When you take Viagra, it blocks the phosphodiesterase type 5 enzyme, allowing increased blood flow to the penis during sexual arousal. Importantly, Viagra does not cause automatic erections - sexual stimulation is still required for the medication to be effective.
Timeline and Duration of Effects
Most men can expect Viagra to start working within 30-60 minutes of taking the tablet. The medication's effects may last for 4-6 hours, though this does not mean an erection will last this entire duration. Individual response times can vary, and factors like food consumption (particularly fatty meals) may delay the onset of action. For optimal results, consider taking Viagra on an empty stomach or after a light meal.
Available Dosage Options
Viagra is available in three strengths: 25mg, 50mg, and 100mg tablets. The typical starting dose is 50mg, which can be adjusted to 25mg if you experience side effects, or increased to 100mg if the lower dose proves insufficient. Only one dose should be taken within a 24-hour period. At EverydayMeds, patients can choose between branded Viagra or generic sildenafil - both contain the same active ingredient with sildenafil offering a more cost-effective alternative.
Who Can Take Viagra
Viagra is suitable for adult men over 18 experiencing erectile dysfunction. Before prescribing, our UK-licensed prescribers conduct a thorough clinical assessment to ensure the medication is safe and appropriate. This evaluation considers your cardiovascular health, current medications, and medical history. Viagra is not suitable for women or men under 18 years of age.
Important Safety Considerations
Certain individuals should not take Viagra due to potentially serious health risks. The medication is contraindicated for men taking nitrate medications (such as GTN spray), those with severe heart disease, recent heart attack or stroke, severe liver problems, or very low blood pressure. Always disclose all medications and health conditions during your consultation to ensure Viagra is safe for you.
