Viagra, also known as sildenafil, is a phosphodiesterase-5 (PDE5) inhibitor and is prescribed for the treatment of erectile dysfunction, or impotence, in men. It is able to do this by increasing blood flow to the penis in order to help the man obtain and keep an erection when he is sexually aroused. Viagra is intended for men, and is not likely to be used for women who are pregnant. Although, Viagra is not expected to be harmful to a fetus. In order for Viagra to be effective, sexual stimulation is required. Generally, Viagra starts working thirty minutes after it is taken, although it could start as soon as seventeen minutes for some men.
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Once Viagra is in effect, it usually works for about three to four hours. However, about two hours into having taken Viagra the effects start to diminish. Side effects of Viagra include, but are not limited to, warmth or redness in the face, the neck, or the chest, stuffy nose, headaches, stomach pain, upset stomach, nausea, diarrhea, memory problems or loss, back pain, an inability to differentiate between the colors green and blue, loss of hearing, ringing in the ears, and dizziness. You should definitely discontinue use of Viagra and call your doctor immediately if you have a serious side effect like sudden vision loss, ringing in your ears, or sudden hearing loss, heavy chest or chest pain, pain spreading to your arm or shoulder, sweating, nausea, ill feeling, irregular heartbeat, swelling in your hands, your ankles, or your feet, shortness of breath, vision changes, feeling light-headed or fainting, or an erection that is painful or lasts four hours or longer. If you are over sixty five years of age, you are more likely to experience possible side effects using Viagra. You should not take Viagra more than once a day. Most men are told to take Viagra one to two hours before sexual activity. However, in 300 certain cases, you may be able to take Viagra as much as four hours or as little as thirty minutes before performing sexual activity. You should always consult your doctor about the correct timing and milligrams for you. The recommended dose is fifty milligrams taken as needed approximately one hour before performing sexual activities. Based on potency and tolerability, the dose may be increased to one hundred milligrams or decreased to twenty five milligrams. The maximum recommended dose is 100 milligrams. Viagra should not be taken with alcohol. You should avoid using Viagra with recreational drugs containing butyl or amyl nitrates like poppers.
For the best results, Viagra should be taken on an empty stomach or at least 3 hours after eating a heavy meal. After taking Viagra you should definitely drink plenty of water to avoid dehydration and sickness. In Australia you can purchase Viagra with or without a prescription. You can easily purchase Viagra online in Australia and have it delivered discreetly to your door step with one of their many websites. You can also purchase it in your local pharmacy. The patent on the drug Viagra expired in May of last year and the price in Australia fell from $65-85 for a pack of four to between $9-$13 at discount pharmacies.
I have been working in General Practice since 2006.
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