![]() ![]() If it’s not treated, the condition can damage the tissues in your penis and cause irreversible ED. Priapism is a medical emergency that needs to be treated right away. With this condition, you have a long-lasting and sometimes painful erection. In fact, rarely, Viagra can cause priapism. This means that if you’re aroused, you should still be able to achieve an erection up to 4 hours after taking a dose of Viagra.Įven though Viagra keeps working in your body for several hours, your erection shouldn’t last this long. Viagra keeps working in your body for up to 5 hours. Instead, you’ll need to be sexually aroused in order for the drug to work. But Viagra itself doesn’t give you an erection. ![]() Viagra typically starts to work between 30 and 60 minutes after you take a dose of the drug. To learn more about Viagra’s effectiveness, see the “ Viagra uses” section below. (These rates varied depending on the cause of their ED and the dosage of Viagra they took.) In comparison, improved erections occurred in 10% to 24% of people who took a placebo (no active drug). In these studies, males who used the drug had an improved ability to have and keep erections that allowed for successful sex.Īcross the studies, between 43% and 83% of people who took Viagra had improved erections. In several clinical studies, Viagra was effective in treating ED. Use of the term “male” in this article refers to sex assigned at birth. Viagra is available in three strengths: 25 milligrams (mg), 50 mg, and 100 mg. In most cases, it should be taken about an hour before sexual activity, but it can be taken 30 minutes to 4 hours beforehand. Viagra comes as tablets that are taken by mouth. But this drug only works if you’re sexually aroused. (A class of drugs is a group of medications that act in a similar way.) Viagra works by increasing blood flow to your penis, which helps you have and keep an erection. It belongs to a class of drugs called phosphodiesterase type 5 (PDE5) inhibitors. Viagra is approved for this use in males ages 18 years and older. With ED, you’re unable to have or maintain an erection. Viagra is a brand-name prescription drug that’s approved to treat erectile dysfunction (ED). ![]()
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