Viagra is a medication which aids in the relaxation of muscles and increases blood flow to certain areas of the body. Viagra is a medication commonly used to treat erectile dysfunction or impotence in males. Viagra works because of a chemical named nitric oxide which by relaxes muscles, which in turn allows an increase in blood flow to the penis to achieve and maintain an erection.
A version of the medication is also used to treat hypertension and is used to allow exercise. The generic version of Viagra is named sildenafil.
Viagra is taken according to doctor’s guidance and is usually dependent on the reasons for taking the medication. For treating erectile dysfunction, Viagra is taken 30 minutes to one hour before sexual intercourse, and should not be taken more than once per day. The medication is taken orally in 25, 50 or 100mg tablets and lasts up to four hours. Viagra begins to work in patients once sexual stimulation occurs. The dosage will depend on the age and other general health factors of the individual patient taking the medication.
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Viagra should be taken with caution if individual patients experience heart or coronary problems like arrhythmia or blood pressure problems, if individuals have experienced heart attacks or strokes. Patients with liver or kidney disease or blood disorders and sickle cell diseases should also be cautious when using Viagra. Viagra should also be avoided by individual male patients with deformed genitals or individuals who have experienced painful or prolonged erection. Viagra is not to be taken with medications or recreational drugs that include nitrates and it is recommended that foods with high fat content and grapefruit or grapefruit juice be avoided. Alcohol consumption should also be limited by individuals using Viagra.
The side effects of Viagra include vision loss, blurred vision, sensitivity to light, dizziness, irregular heartbeat, nausea or diarrhea, numbness, flushed skin, tingling sensations in the chest, neck or jaw. It can also cause hearing loss, swelling in the hands, ankles or feet, shortness of breath, nasal congestion and headaches. Viagra can also result in painful erections.
Viagra is readily available at online pharmacies in its generic form which tends to be more affordable than brand name Viagra which can be expensive. It can be purchased online for prices ranging from one dollar to three dollars per pill depending on the amount of active ingredient in the pill and the brand purchased by patients.