PDE5 inhibitors are oral prescription medications used to treat erectile dysfunction. Common medications in this class include sildenafil and tadalafil. These medications work by relaxing smooth muscle tissue and increasing blood flow to the penis during sexual arousal. They do not create an automatic erection or increase sexual desire on their own. Instead, they support the body’s natural erectile response when sexual stimulation is present.
Clinical studies of sildenafil demonstrate significantly improved erectile function across a broad range of ED severities, causes, and patient characteristics, with improvement rates ranging from approximately 70% to 95% depending on the population studied. Some men may notice improvement within the first few uses, particularly when ED is primarily psychogenic. For those with more significant vascular disease, responses can be more modest, though many patients still benefit.
Tadalafil is a long-lasting ED medication within this class. Sildenafil typically takes effect within 30 to 60 minutes and lasts up to four to six hours. Tadalafil may take up to two hours to take full effect, but it can remain active for up to 36 hours, which may allow for more flexibility in timing. A low-dose daily tadalafil option also exists if you prefer a consistent baseline rather than dosing before anticipated activity.
Side effects across both medications are generally mild and can include headache, flushing, indigestion, or nasal congestion. If you take nitrate medications for heart conditions, you should not take either drug due to the risk of a serious blood pressure drop.
A telehealth consultation can help determine whether it may be an appropriate option for you to order sildenafil or tadalafil online, based on your medical history, current medications, and overall health.