Effects of sildenafil citrate on ejaculation latency, detumescence time, and refractory period: placebo-controlled, double-blind, crossover laboratory setting study. With this said, if you suffer from ED, using Viagra may produce a noticeable improvement in the general level of enjoyment you get from sex due to its effects on your sexual performance. Continuing Education Activity Sildenafil is a medication used in the management and treatment of erectile dysfunction and pulmonary arterial hypertension. ED is associated with depression, anxiety, and loss of self-esteem. The trial results revealed that sildenafil had improved the patients’ depression, anxiety, and self-esteem. Patients should always ask their doctors for medical advice about adverse events. Objectives: Explain the mechanism of action of sildenafil in the treatment of erectile dysfunction and pulmonary arterial hypertension.Los medicamentos orales para la disfunción eréctil generalmente son eficaces y tienen pocos efectos secundarios. Los cuatro medicamentos principales para la disfunción eréctil que se toman por boca son los siguientes: Avanafilo (Stendra) Sildenafilo (Viagra) Tadalafilo (Cialis) Vardenafilo. Estos medicamentos se denominan inhibidores . Cost: If the price for branded Viagra is outside of your budget, Lemonaid’s $2 sildenafil pills are some of the lowest priced Viagra alternatives that we’ve found. Product details Usage: take. Viagra is absorbed quickly into your body. It can start working within 30 minutes, but it may take a couple hours for some people. However, one study on Viagra found that about 70% of men achieved erections in 30 minutes, and more than 80% of men achieved erections within 45 minutes. For most men, the effects of Viagra will start within .