But as your body clears the drug, it may not be working any longer. So this means it may take about 20 hours for Viagra to be completely cleared from your body. In most cases, it takes about 5 half-lives for your body to completely remove a drug from your system. This means that 4 hours after you take a dose, your body has cleared half of the dose. The half-life of Viagra is about 4 hours. How long does Viagra stay in your system? What’s its half-life? Talk with your doctor to learn more about how long you can expect Viagra to work. So over the next few hours after it’s taken, the drug may not work as well. Over time, Viagra is slowly removed from the body. In most people, the drug is most effective about 1 hour after it’s taken. Viagra works at its best within a few hours after it’s taken. If you’d like to know more about this, ask your doctor or pharmacist. Taking Viagra with a meal that’s high in fat may make the drug work more slowly. But if you take your dose on an empty stomach, the drug may work faster. In most cases, Viagra works within 1 hour after you take a dose. Let your doctor know if you have concerns about Viagra not working. In other cases, your doctor may recommend a different medication altogether. Then, they would monitor you to see if the higher dose is working. They may recommend that you take a higher dose of the drug. If Viagra doesn’t seem to work for you, talk with your doctor. What should you do if Viagra doesn’t seem to work? For information about the difference between sex and gender, see this article. * In this article, we use the term “male” to refer to someone’s sex assigned at birth. If you have questions about how quickly Viagra will work for you, talk with your doctor or pharmacist. But other times, it may take up to 4 hours to start working. It’s possible that Viagra can begin working within 30 minutes of being taken. In most males,* Viagra works within 1 hour after it’s taken. Viagra works quickly after you take a dose. If you have more questions about how Viagra works, talk with your doctor or pharmacist. This way, blood flow to the penis can occur and not be stopped by PDE-5. Viagra works by blocking the PDE-5 from working. In people having trouble with erections, PDE-5 may work too quickly.
Then, another protein called phosphodiesterase-type 5 (PDE-5) breaks down cGMP, stopping the erection. It decreases ED symptoms by helping you get and keep an erection.Įrections happen when a protein called cyclic guanosine monophosphate (cGMP) is released, causing more blood to flow into your penis. Viagra is used to treat erectile dysfunction (ED). These questions and others are answered below. You may have questions related to how Viagra works and how long it lasts in your body. How does Viagra work and how long does it last?
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