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The frequency of patients reporting improvement of erections in response to a global question in four of the randomized, double-blind, parallel, placebo-controlled fixed dose studies (1797 patients) of 12 to 24 weeks duration is shown in Figure 7. These patients had erectile dysfunction at baseline that was characterized by median categorical scores of 2 (a few times) on principal IIEF questions. Erectile dysfunction was attributed to organic (58%; generally not characterized, but including diabetes and excluding spinal cord injury), psychogenic (17%), or mixed (24%) etiologies. Sixty-three percent, 74%, and 82% of the patients on 25 mg, 50 mg and 100 mg of Viagra, respectively, reported an improvement in their erections, compared to 24% on placebo. In the titration studies (n=644) (with most patients eventually receiving 100 mg), results were similar. viagra wiki slow speech

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Do not use Levitra in patients with severe hepatic impairment (Child-Pugh C) [see Warnings and Precautions (5.8), Use in Specific Populations (8.6) and Clinical Pharmacology (12.3)]. cialis warnings Viagra was shown to potentiate the hypotensive effects of nitrates and its administration in patients who use nitric oxide donors such as organic nitrates or organic nitrites in any form is therefore contraindicated [see Contraindications (4.1), Drug Interactions (7.1), and Clinical Pharmacology (12.2)].Deje de usar sildenafil y busque atención médica de emergencia si usted ha perdido la visión de forma repentina. Blisters of 2 x 15 NDC 0002-4462-34 One of the less common side effects associated with Viagra is a medical emergency known as priapism. Priapism is a painful erection lasting for more than four hours which requires immediate medical attention and treatment. Priapism may lead to permanent damage if left untreated, including the permanent loss of ability to have an erection. Levitra acts similarly to Viagra regarding possible side effects and onset and duration of pharmacologic action. However, Levitra is available at a lower dose and commonly causes dizziness. The typical recommended starting dose of Levitra is 10 mg and dosages can range from 5 mg to 20 mg depending on desired response and adverse reactions. Cialis differs from both Viagra and Levitra with regard to onset and duration of action. With treatment with Cialis, improvement in erectile function is possible for anywhere from 24 to 36 hours after administration of a dose, significantly longer than with Viagra. In addition, Cialis typically has a quicker onset of action and begins to work within approximately 30 minutes. Similar to Levitra, the recommended starting dose for Cialis, as needed, is 10 mg. Doses may range from 5 mg to 20 mg depending on efficacy and patient tolerability.

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But what does "any time the moment is right" really mean, and does that claim hold up? All three ED drugs are absorbed rapidly, but they still must be taken 30 to 60 minutes prior to the event in order for them to work. This requires adding some forethought to foreplay, which in some circumstances could get a little clumsy or awkward.

generic viagra for sale nasal congestionUse caution when co-administering alpha-blockers with Viagra because of potential additive blood pressure-lowering effects. When Viagra is co-administered with an alpha-blocker, patients should be stable on alpha-blocker therapy prior to initiating Viagra treatment and Viagra should be initiated at the lowest dose [see Dosage and Administration (2.3),Warnings and Precautions (5.5), Clinical Pharmacology (12.2)].increased frequency of urination

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