Start now. If you have any medical questions or concerns, please talk to your healthcare provider. The articles on Health Guide are underpinned by peer-reviewed research and information drawn from medical societies and governmental agencies.
However, they are not a substitute for professional medical advice, diagnosis, or treatment. Weighing the benefits and risks of both Viagra sildenafil and Levitra vardenafil requires some basic knowledge of each.
Viagra and Levitra take approximately the same amount of time to work. Viagra can be effective in as little as one hour, as can Levitra, though, for some patients, these medicines can work more rapidly. In fact, some patients find that Viagra and Levitra can start to have an effect in 15 minutes.
Nevertheless, each should be approached as reliably taking effect in one hour. Keep in mind, the effect of a medication may not be needed beyond 6 or 8 hours, and any side effects in addition to any positive effect they cause will fade rapidly as the medication leaves the bloodstream. That means that someone who experiences nasal congestion or flushing when they use either Viagra or Levitra may find it better to take the shorter acting medications, as opposed to Cialis tadalafil —which last far longer up to 36 hours.
It might be worth a bit of nasal congestion during the time when sex will occur, but there would be no reason to endure a stuffy nose once sexual intimacy had concluded. A real, U. Patient Education. Related Conditions. Erectile Dysfunction. How and When to Take the Medications Viagra Take 50 mg of Viagra one hour before you are ready to engage in sexual activity.
Viagra works best 30 minutes to four hours after taking the pill. Viagra also works best on an empty stomach. Do not take the pill after a high-fat meal. If you do not achieve an erection with sexual stimulation, you can increase the dosage of your medication the next time sexual activity is planned. After surgery, most men require doses of mg, or more, of Viagra. Within eight to 12 hours, Viagra is almost completely eliminated from the body.
The tablets should be taken orally and the recommended starting dose is 10mg although your starting dose may be different depending on your exact medical history.
The maximum daily dose is 20mg and this should not be exceeded in any 24 hour period. Take the tablet 30 to 60 minutes before you plan to engage in sexual activity. As mentioned above, a heavy meal or a lot of food can slow down the time it takes for the medicine to kick in so an empty stomach or a light meal is best.
Once the medicine is active in your system, it will remain so for up to 5 hours. Serial blood samples were analyzed for vardenafil and metabolite M1 levels. When administered after an overnight fast and after a high-fat breakfast, vardenafil geometric mean Cmax was
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