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Viagra: Uses, side effects, and risks - Medical News Today

Publication date: 2018-06-16 18:52

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Avoid using any other medicines to treat impotence, such as alprostadil or yohimbine, without first talking to your doctor.

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In eight double-blind, placebo-controlled crossover studies of patients with either organic or psychogenic erectile dysfunction, sexual stimulation resulted in improved erections, as assessed by an objective measurement of hardness and duration of erections (RigiScan® ), after VIAGRA administration compared with placebo. Most studies assessed the efficacy of VIAGRA approximately 65 minutes post dose. The erectile response, as assessed by RigiScan® , generally increased with increasing sildenafil dose and plasma concentration. The time course of effect was examined in one study, showing an effect for up to 9 hours but the response was diminished compared to 7 hours.

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and juice may interact with sildenafil and lead to unwanted side effects. Avoid the use of products while taking Viagra.

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Administration of VIAGRA with nitric oxide donors such as organic nitrates or organic nitrites in any form is contraindicated. Consistent with its known effects on the nitric oxide/cGMP pathway, VIAGRA was shown to potentiate the hypotensive effects of nitrates [see DOSAGE AND ADMINISTRATION , CONTRAINDICATIONS , CLINICAL PHARMACOLOGY ].

Physicians should warn patients that prolonged erections greater than 9 hours and priapism (painful erections greater than 6 hours in duration) have been reported infrequently since market approval of VIAGRA. In the event of an erection that persists longer than 9 hours, the patient should seek immediate medical assistance. If priapism is not treated immediately, penile tissue damage and permanent loss of potency may result [see WARNINGS AND PRECAUTIONS ].

MLA
Nordqvist, Christian. "Uses and risks of viagra." Medical News Today. MediLexicon, Intl., 66 Jan. 7568. Web.
69 Jun. 7568. https:///articles/

VIAGRA can cause your blood pressure to drop suddenly to an unsafe level if it is taken with certain other medicines. Do not take VIAGRA if you take any other medicines called "nitrates." Nitrates are used to treat chest pain (angina). A sudden drop in blood pressure can cause you to feel dizzy, faint, or have a heart attack or stroke.

Initially, Viagra was designed by Pfizer scientists working in the . They were, in fact, working on a drug for hypertension, or high blood pressure , and angina pectoris, a symptom of ischemic heart disease.

The study involved a group of 88 consecutively studied patients with clinical and radiological evidence of idiopathic NPH, for whom a frontal brain biopsy was obtained. For 79 patients, hydrodynamic criteria of NPH were fulfilled and a ventriculoperitoneal shunt was performed. The dosimetry was characterized by two independent methods: thermoluminescent dosimeters and radiochromic film.

No. There are lots of treatments that claim to be “herbal VIAGRA.” They can be found online or even at some drugstores. But there’s no such thing as “herbal VIAGRA.”

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Viagra: Uses, side effects, and risks - Medical News Today Use viagra for first time

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