The Science Behind Viagra's Effectiveness
Understanding the Mechanism of Action
Viagra works by inhibiting an enzyme called phosphodiesterase type 5 (PDE5). This enzyme is responsible for breaking down a chemical messenger called cyclic guanosine monophosphate (cGMP), which plays a crucial role in maintaining blood flow to the penis during sexual arousal. When PDE5 is blocked, cGMP levels remain elevated, allowing blood vessels in the penis to stay relaxed and maintain improved blood flow. It's important to understand that Viagra does not automatically cause an erection - sexual stimulation is still required to trigger the natural biological processes that lead to an erection.
Timing and Duration of Effects
Viagra typically begins working within 30-60 minutes of taking the tablet, though this can vary between individuals. The medication reaches peak effectiveness approximately one hour after consumption. Effects may last for 4-6 hours, but this doesn't mean an erection will persist for this duration. Rather, it means you may find it easier to achieve and maintain an erection during this timeframe when sexually aroused. Fatty meals can delay the absorption of Viagra, potentially making it take longer to work, so it's often recommended to take it on an empty stomach or with a light meal.
Dosage Options and Personalisation
Viagra is available in three strengths: 25mg, 50mg, and 100mg tablets. Most men start with a 50mg dose, which can be adjusted up to 100mg or down to 25mg depending on effectiveness and any side effects experienced. EverydayMeds offers both the branded Viagra and the generic alternative, sildenafil, in all these strengths. The generic option contains exactly the same active ingredient and works in precisely the same way, but typically costs less. Only one dose should be taken within a 24-hour period, and it's important to follow the prescribed dosage guidance provided by your healthcare provider.
Who Can Benefit from Viagra Treatment
Viagra may be suitable for adult men experiencing erectile dysfunction, but it's not appropriate for everyone. A clinical assessment is required to determine suitability, taking into account your medical history, current medications, and cardiovascular health. The treatment is not recommended for men taking nitrate medications (such as GTN spray), those with severe heart conditions, or individuals with certain other medical conditions. During our online consultation process, our UK-licensed prescribers will review your health information to ensure Viagra or sildenafil is safe and appropriate for you. This thorough assessment helps ensure you receive treatment that's both effective and safe for your individual circumstances.
