Sildenafil belongs to a class of medications called phosphodiesterase inhibitors, which work by increasing blood flow to the penis during sexual activity, resulting in an erection. Viagra (sildenafil) is used for the treatment of erectile dysfunction. Viagra works by inhibiting the chemical phosphodiesterase, which leads to an increase in the effect of nitric oxide. Nitric oxide allows the smooth muscles inside the penis to relax, promoting more blood flow to the area during sexual arousal or stimulation. Viagra begins to work within about an hour and the effects can last for up to four hours. In clinical studies, Viagra was given to more than 3,000 patients aged 19 to 87 years with erectile dysfunction of different causes. how to grow your peni naturally Take Levitra exactly as your doctor prescribes. Do not take more than one Levitra a day. Doses should be taken at least 24 hours apart. Some men can only take a low dose of Levitra because of medical conditions or medicines they take. Your doctor will prescribe the dose that is right for you.
Another common reason for failures of oral therapy is the absence of sexual or genital stimulation prior to attempting sexual intercourse. These medicines facilitate an erection by increasing blood flow to the penis, but they do not act as an aphrodisiac or as an initiator of the erection. A man who is not “in the mood” or does not have adequate physical stimulation will not respond with an erection.Cialis for the Treatment of Symptoms of BPH
canadian pharmacy cialis 40 mg Erectile dysfunctionDo not take LEVITRA if you:A doctor would have to determine whether a woman seeking the pill was suffering from the disorder - characterised by a lack of desire, causing her distress.
Your healthcare provider may change your dose if needed. viagra brand
Contact your doctor or seek emergency medical attention if your erection is painful or lasts longer than 4 hours. A prolonged erection (priapism) can damage the penis. how long does viagra take to kick in A review of population subgroups demonstrated efficacy regardless of baseline severity, etiology, race and age. Viagra was effective in a broad range of ED patients, including those with a history of coronary artery disease, hypertension, other cardiac disease, peripheral vascular disease, diabetes mellitus, depression, coronary artery bypass graft (CABG), radical prostatectomy, transurethral resection of the prostate (TURP) and spinal cord injury, and in patients taking antidepressants/antipsychotics and anti-hypertensives/diuretics. have retinitis pigmentosa, a rare genetic (runs in families) eye disease
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)].
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