Viagra

Viagra (sildenafil) is a prescription medicine intended for efficient treatment of erectile dysfunction, commonly known as impotence, although the former is a more accurate term. Viagra can increase the effects of some medicines (drugs lowering blood pressure) and should never be combined with nitrates. Since nitrates can come in a variety of forms, make sure you check if the drug you are taking is a nitrate based medicine. Viagra is not intended for women, but it has been classified by the FDA as pregnancy category B. It is not known whether it passes into breast milk, but this drug is not expected to do any harm to an unborn baby. Talk to your doctor if you are planning to drink grapefruit juice while on Viagra, as this may affect your condition and the success of your treatment. In some very rare cases Viagra can decrease blood flow to the optic nerve of the eye, as a result you may experience sudden vision loss. While it's not completely clear if it's a direct consequence of taking Viagra, people with such conditions as pre-existing eye problems, high cholesterol, high blood pressure, diabetes, heart disease, smokers and those older than 50 years old are more likely to suffer a sudden vision loss. If you think you may be having this rare but serious side effect, talk to your health care provider as soon as possible, as this condition tends to get worse if timely medical assistance is not given. Whenever you decide you need to start taking Viagra make sure you first discuss it with a qualified health care professional and talk about any potential contraindications you may have. People allergic to sildenafil, as well as those taking nitrate based drugs are not supposed to take Viagra at any doses. Some of the following health conditions may also interfere with the success of your treatment and cause undesirable side effects: blood circulation problems, bleeding disorder, stroke, conditions affecting the shape of the penis, blood cell problems, stomach ulcer, heart attack, irregular heartbeat, chest pain, high cholesterol, heart, kidney, or liver disease, pulmonary veno-occlusive disease, high or low blood pressure, and diabetes. If you have any of the health conditions mentioned, it's very important that you discuss them with your doctor in advance. Do not give Viagra to other people and always observe the dose recommended.