How Viagra Works and What to Expect
Viagra's Mechanism of Action
Viagra contains sildenafil citrate, a PDE5 inhibitor that blocks the phosphodiesterase type 5 enzyme. This action allows blood vessels in the penis to relax and widen during sexual arousal, improving blood flow and helping achieve an erection. 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 take effect within 30-60 minutes of taking the tablet. The medication's effects may last up to 4-6 hours, though this does not mean an erection will last this entire time. Individual response times can vary based on factors including age, overall health, and whether the medication is taken with food. Fatty meals may delay the onset of action.
Available Dosage Options
Viagra is available in 25mg, 50mg, and 100mg strengths. The typical starting dose is 50mg, which can be adjusted to 25mg or 100mg based on effectiveness and tolerability. At EverydayMeds, patients can choose between branded Viagra or generic sildenafil during checkout - both contain the same active ingredient with sildenafil offering a more cost-effective alternative.
Important Safety Considerations
Viagra should only be taken once per 24-hour period and requires a prescription following consultation with a qualified prescriber. The medication is not suitable for everyone, particularly those taking nitrate medications (such as GTN spray), those with severe heart conditions, or recent heart attack or stroke history. Our clinical assessment evaluates your medical history, current medications, and cardiovascular health to ensure safe treatment.
Managing Expectations and Side Effects
While Viagra is effective for many men with erectile dysfunction, individual responses may vary. Common side effects can include headaches, flushing, indigestion, and nasal congestion. These are typically mild and temporary. If you experience any concerning side effects or the medication is not working as expected, consult with your prescriber about adjusting your treatment plan.
