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viagra duration The major advantage of these medications for sexual enhancement is that they do not cause an erection at inappropriate times, because they act only in response to sexual stimulation. If there is no sexual stimulation drug remains in the background. All three are taken orally prior to planned sexual activity, acting to increase blood flow in the penis in response to sexual stimulation. However, there are important differences between the three, differences that could influence safety, specificity, duration of action, adverse effects, and ultimately, public acceptance within this class.

-Initial dose: 10 mg orally once a day, as needed, approximately 60 minutes before sexual activity. Increase to 20 mg or decrease to 5 mg based on efficacy and tolerability.Cialis Side Effects

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In those patients already taking an optimized dose of PDE5 inhibitor, alpha-blocker therapy should be initiated at the lowest dose. Stepwise increase in alpha-blocker dose may be associated with further lowering of blood pressure when taking a PDE5 inhibitor.The FDA said the treatment should be stopped after eight weeks if there was no improvement. canada levitra Drinking alcohol with this medicine can cause side effects.

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Physicians should consider the cardiovascular status of their patients, since there is a degree of cardiac risk associated with sexual activity. Therefore, treatment for erectile dysfunction, including Levitra, should not be used in men for whom sexual activity is not recommended because of their underlying cardiovascular status. viagra news There were no treatment-related testicular findings in rats or mice treated with doses up to 400 mg/kg/day for 2 years.diarrhea

If you have a low sex drive, or if you have had a previous head injury, ED may be due to a hormonal problem. In this situation a blood test to check the level of the hormone testosterone (and sometimes prolactin) may be advised.More about Levitra (vardenafil)For the Consumer

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