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The effect of 10 mg and 80 mg vardenafil on QT interval was evaluated in a single-dose, double-blind, randomized, placebo- and active-controlled (moxifloxacin 400 mg) crossover study in 59 healthy males (81% White, 12% Black, 7% Hispanic) aged 45-60 years. The QT interval was measured at one hour post dose because this time point approximates the average time of peak vardenafil concentration. The 80 mg dose of LEVITRA (vardenafil hcl) (four times the highest recommended dose) was chosen because this dose yields plasma concentrations covering those observed upon co-administration of a low-dose of LEVITRA (vardenafil hcl) (5 mg) and 600 mg BID of ritonavir. Of the CYP3A4 inhibitors that have been studied, ritonavir causes the most significant drug-drug interaction with vardenafil. Table 1 summarizes the effect on mean uncorrected QT and mean corrected QT interval (QTc) with different methods of correction (Fridericia and a linear individual correction method) at one hour postdose. No single correction method is known to be more valid than the other. In this study, the mean increase in heart rate associated with a 10 mg dose of LEVITRA (vardenafil hcl) compared to placebo was 5 beats/minute and with an 80 mg dose of LEVITRA (vardenafil hcl) the mean increase was 6 beats/minute.
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hi, i am an 18 year old male who is moderatly healthy, i had done alot of jelquing in the past from about the age of 12 till 17, and have been noticing that i can no longer achieve a full erection, and that it takes alot of physical stimulation to achive an erection, and when i do achive these erections they are somewhat weak, and go away within a couple minutes of no stimulation, i also have noticed that i no longer can achieve an erection just from visual Visual acuity test stimulation, and have not had a nocturnal emmision for about a year, i also no longer wake up with erections, i did notice a slight change in my function while i was taking enzyte but this caused me to have panic Panic disorder Panic disorder with agoraphobia attacks so i stopped taking it. is therte anything i can do to achieve a normal sex Buccal smear Causes of sexual dysfunction Child abuse - sexual Delayed ejaculation Erection problems Female sexual dysfunction Inhibited sexual desire Orgasmic dysfunction Puberty and adolescence Safe sex Sexual intercourse - painful life?
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