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Generally, it is recommended that you wait for 36 hours between doses. Some erectile dysfunction treatments are more effective than others, so we’ve compiled a list of erectile dysfunction treatment options to help you decide which is best for you. There is a plethora of alternative erectile dysfunction treatments and remedies out there – however, some are more effective than others (and some aren’t very effective at all). Viagra is always taken as needed, usually about an hour before sex. You can take Viagra daily, but because the medication only stays in your system for four to six hours, it will not be effective all day.

For efficacy analyses, all patients with baseline and postbaseline observations on all variables in the statistical model were included. The IIEF erectile function domain, other domains, and individual items were analyzed using the last-observation-carried-forward convention, applied to each of the baseline and the postbaseline periods. The baseline and end point score for each SEP question was the patient’s percentage of "yes" responses to that question during the run-in and postbaseline periods, respectively. Vidalista must not be used if patient is taking nitrate drugs for heart problems such as nitroglycerine, isosorbide mononitrate or dinitrate, or if taking recreational drugs such as amyl nitrite or butyl nitrite. Combination of these drugs may cause a serious drop in blood pressure. When the blood vessel muscle cells relax, this expands the vessel and increases blood flow