Viagra Uses ,Dosage And Side Effects
Introduction – what is Viagra?
Viagra is a medication that is used in the treatment of erectile dysfunction ( ED). It was first developed by British scientists and was then marketed by a leading US pharmaceutical company. These scientists were working on a drug to treat angina and hypertension when they noted that the drug also caused strong penile erections. Viagra was launched in the market 1998 and it was the first oral medication to be approved for treating ED in the Australia.
Viagra works by allowing increased blood flow to the penis once a man becomes sexually aroused. It therefore enables the man to attain and sustain an erection that is sufficient for sexual activities.
Viagra has also been found to be useful in treating and preventing pulmonary edema (excessive accumulation of fluid in the lungs).This condition is very common among mountain climbers.
Dosage
Sildenafil is the active ingredient in Viagra.The tablets come in dosages of 25,50 or 100 milligrams and they are blue in color with a diamond shape and rounded edges.The drug should only be taken when necessary and 50 milligrams is the standard recommended dosage. It is advised that one takes the drug about 30 minutes or one hour prior to the onset of sexual activities. However, one can also take it four hours before. If there are any reported side effects the dosage can be reduced to 25 milligrams. The maximum dosage is 100 milligrams and health experts advise against taking more than one dose in a given day. Whereas one can take the medication with food, taking a meal with a high fat content may delay its activity in the body. Other things to avoid include alcohol and grape fruits because users may experience some harmful side effects.
Side effects
As in many other drugs, users of Viagra may experience some side effects. The most frequent side effects include digestive problems, headaches, dizziness and poor eyesight. These are minor side effects and will normally disappear once the drug has been processed and excreted from the body.
However the medication may also result in more serious side effects which will require urgent medical attention. These side effects include mouth dryness, excessive tiredness and sleepiness, muscle and chest pains, vomiting, irregular or quickened pulse, swollen hands, feet or ankles, hearing difficulties and diminished nerve sensitivity. Some users may also experience a painful erection or an abnormal erection that lasts even for four hours. This can result in impotence and long-term tissue damage.
Warnings and contraindications
People suffering from some health conditions should avoid Viagra or talk with their physicians before they use it.The medication should not be used by people with cardiovascular problems, genetic retinal complications, blood disorders, kidney disease and liver impairment. People who are taking nitrate based drugs or using nitrites such as poppers for leisure should also not use the drug. In addition, if one has suffered a stroke or heart attack in the recent past they should also avoid using the drug. Those using other drugs for impotence issues should also get medical advice before using Viagra.
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