General Information about Viagra / Generic Viagra?

When a man is sexually aroused, the arteries in the penis relax and widen, allowing more blood to flow into the penis. As the arteries in the penis expand and harden, the veins that normally carry blood away from the penis become compressed, restricting the blood flow out of the penis. With more blood flowing in and less flowing out, the penis enlarges, resulting in an erection. It is to be noted that Viagra is not a hormone or aphrodisiac, it works only when a man is sexually stimulated.Viagra DosageViagra is available in the form of tablet and is meant to be taken orally. Ideally it is to be taken almost an hour before the sexual activity. However, Viagra can be taken anytime from 4 hours to 30 minutes before sexual activity. It takes 30 - 45 minutes for showing Viagra's effect and this effect lasts for almost four hours. If you take Viagra after a high-fat meal (such as fish & chips, cheeseburger or French fries), it may take a little longer to start working. Viagra should not be taken more than once a day unless prescribed by your doctor.Warnings/PrecautionsIt is always advisable to consult physician before starting the intake of Viagra. In case you have the history of an heart attack, stroke, or life-threatening irregular heartbeats within the last six months; or have heart failure in the past; coronary artery disease; angina; high or low blood pressure; liver problems; kidney problems; blood problems, including sickle cell anemia or leukemia; a bleeding disorder; stomach ulcer; retinitis pigmentosa (an inherited condition of the eye); physical deformity of the penis such as Peyronie's disease; or a condition that could lead to prolonged and painful erections, such as a tumor of the bone marrow, sickle cell anemia, or leukemia; or you are taking any other medicine containing nitrates your blood pressure could suddenly drop to an unsafe level and can risk your life. All these medical conditions and also allergy to sildenafile or any of its ingredients can lead to disastrous results. So it is always advisable to consult your doctor for adjusting the dosages after monitoring the treatments listed above.Viagra is not approved or recommended for use in women. Therefore, women should not take Viagra under any circumstances. It also not recommended for men older than 65 years unless they tolerate it in small doses for those who are sensitive to the effects of Viagra.Missed DoseViagra can be taken as and when needed and there is no concept of missed dosage.Possible Side Effects of ViagraEvery medicine has some or the other side effect and so does Viagra. It depends on individual to individual and is usually mild to moderate and don't last longer than a few hours. Mostly these side effects are evident with high intakes of Viagra. The most common side effects of Viagra are headache, nausea, flushing of the face, and upset stomach. Also there can be some temporary changes in color vision (such as trouble telling the difference between blue and green objects or having a blue color tinge to them), eyes becoming sensitive to light, or blurred vision.But if you become dizzy or nauseated, or have pain, numbness, or tingling in your chest, arms, neck, or jaw during sexual activity, stop and call your doctor right away. If you would love to recognize more regarding cialis for sale, call us or just see us at our site.