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William Gault, RPh Q: My husband is on blood pressure medications and tried Viagra. There are no controlled clinical data on the safety and efficacy of Viagra patients who suffered a myocardial infarction (heart attack), stroke, or life-threatening arrhythmia within the last 6 months. Pregnancy categories A, B, C, D, and X are being phased out. When they looked at the individual measures, such as desire or lubrication, they did not find significant differences. However, the studies done to test its effectiveness on women have yielded less-than-stellar results, probably because men and women are fundamentally different when it comes to desire and arousal. Similar values for pharmacokinetic parameters were seen in normal volunteers and in the patient population, using a population pharmacokinetic approach.

If the website has a phone number, can you speak to a pharmacist directly? For more specific information, consult with your doctor or pharmacist for guidance based on your health status and current medications, particularly before taking any action. This way, it is possible to see what side effects occur, how often they appear, and how they compare to the group not taking the medicine.   Based on these studies, the most common side effects of Viagra (occurring in more than 2 percent of people) include:   Headaches --in up to 16 percent of people Facial flushing -- up to 10 percent Indigestion, known as dyspepsia -- up to 7 percent  Nasal congestion -- up to 4 percent Urinary tract infections (UTI) -- up to 3 percent Vision problems, including trouble telling the difference between blue and green, increased sensitivity to light, or blurred vision -- up to 3 percent Diarrhea -- up to 3 percent Dizziness -- up to 2 percent Unexplained rash -- up to 2 percent.   There were some other common side effects (also seen in more than 2 percent of people) that were just as common in people taking a sugar pill instead of Viagra as they were in people taking the actual drug. A: The maximum recommended dose for Viagra (sildenafil), used to treat ED (erectile dysfunction), is 100 mg per day. Metabolism and Excretion Sildenafil is cleared predominantly by the CYP3A4 (major route) and CYP2C9 (minor route) hepatic microsomal isoenzymes.

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Interactions that increase your risk of side effects Side effects from sildenafil: Taking sildenafil with certain medications raises your risk of side effects from sildenafil. Sildenafil slows down the progression of your illness. Dans une pharmacie locale pour acheter sildenafil en France il faut se munir d'une ordonnance, ce qui veut dire passer par la case consultation. Cialis is also available for once daily administration. Viagra ads during the Superbowl—and Janet Jackson got flack for showing a breast when during the commercial breaks, ads discussing penises and erections, and beer ads promoting sexuality like crazy were considered appropriate!

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The use of Viagra-like drugs in women is not as straightforward, and a similar treatment does not exist for women. PRECAUTIONS Cardiovascular There is a potential for cardiac risk of sexual activity in patients with preexisting cardiovascular disease. Efficacy Results from Controlled Clinical Studies The effect on one of the major end points, maintenance of erections after penetration, is shown in Figure 6, for the pooled results of 5 fixed-dose, dose-response studies of greater than one month duration, showing response according to baseline function. The study, Croft says, ''is the first and only double-blind, randomized trial that shows it works for this.'' Viagra, he notes, is not approved by the FDA for use in women, so the use is ''off-label'' and not typically covered by insurance.Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0 2. "Product Information. If you have any site that have this information, it would be really appreciated..

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If you’ve already had NAION or have crowded optic disc, you may have a higher risk of NAION and vision changes with this drug. It works by boosting the effects of nitric oxide, relaxing the smooth muscles of the arteries in the penis, allowing for increased blood flow and resulting in an erection. Sudden vision loss in one or both eyes can be a sign of a serious eye problem called non-arteritic anterior ischemic optic neuropathy (NAION). Patients with cardiovascular disease could have additional side effects from Viagra, especially in combination with sexual activity. A: Erectile dysfunction is a common problem in diabetic men. R- cells, a line of mouse embryo fibroblasts with a targeted disruption of the insulin-like growth factor I (IGF-I) receptor genes, are refractory to transformation by several viral and cellular oncogenes. Measurements of heart function were made before and after each injection.  This included blood pressure readings, electrocardiograms and echocardiograms, as well as blood samples to confirm relatively equal levels of sildenafil and other enzymes.  Results showed that each dobutamine injection stimulated heart function, increasing heart rate and the force of each heartbeat used to pump blood throughout the body.  “This stimulation is similar to the way the nervous system normally increases heart function when triggered by emotional or exercise stress, or in diseases such as heart failure,” adds Kass.