Is Viagra effective for ED treatment?

Supplements to treat male sexual dysfunction (or impotence) have long been in development, and the first approved drug for sexual side stimulation was done with sildenafil (Viagra).A study of 4,000 men with erectile dysfunction showed Viagra helped patients with premature ejaculation achieve and maintain erections longer than without treatment.

How long does it take for Viagra to kick in?

Generally, Viagra lasts between 4-6 hours.It remains in your body for up to 5 hours.If taken correctly, Viagra can help you get and maintain a firm erection for up to 4 hours. If you have taken Viagra in the past 24 hours, you should not take Viagra with any other erectile dysfunction medication.You can take Viagra more often as recommended by your doctor, and in the recommended dosage range.

How does it work

Viagra and other PDE5 inhibitors increase blood flow to the erectile tissues of the penis. Sildenafil helps erectile dysfunction by working on the chemical process that allows male sexual stimulation to cause the blood vessels in the penis to relax and expand allowing the increased flow of blood.By inhibiting PDE-5, Viagra fast delivery helps to relax the blood vessels in the penis in order to increase blood flow and increase the chance of getting and maintaining an erection.

What is the correct dosage for older men?

Viagra comes in different dosages, and the recommended dose depends on several factors, including your age, sex and how healthy you are. Therefore, it is important to make sure your doctor knows about any other medications you are taking that could interact with Viagra.In general, the recommended starting dose of Viagra is 50mg. However if you're of age over 65 your doctor are more likely to prescribe the lowest dose of Viagra which is 25 mg.

Alternatives to Viagra

Sildenafil (Viagra), Tadalafil (Cialis) and Vardenafil (Levitra) are considered to be the most effective oral medications for treating erectile dysfunction.Sildenafil is also sold under the brand name Revatio and is used to treat pulmonary arterial hypertension (PAH). Cialis and Viagra are similar medicines, but there are some differences in how long they last, how long they take to work, and some small differences in side effects.The primary differences between these two drugs is the slightly longer onset of action for Viagra, which lasts as long as one or two hours, versus Cialis which generally lasts up to 36 hours.