How do drugs like Viagra work?

admin 25 May, 2018 0

Viagra is a prescription medication for erectile dysfunction, it was FDA approved in March 1998.

Originally it was developed to treat angina and later it was discovered that can treat impotence. The success rate of Viagra is 65-70%. Viagra does not increase libido and requires sexual stimulation to function.

Like any medicine, it should be used only by those who suffer. Normal men should not take this pill only to have more confidence. Abuse is very dangerous because leads to addiction like in many other drug abuse.

The action mechanism of this drug, partially known, is a relaxation of muscles, accompanied by a concomitant increase in the amount of blood infused into the penis. After oral administration, the drug is rapidly absorbed (do not take concomitantly with erythromycin, ketoconazole), the maximum effect occurs in one hour after administration and lasts sometimes up to 4-6 hours. This drug increases the man’s ability to engage in a normal sexual activity, and to maintain an erection satisfactory enough for intercourse.

Elimination of this drug is more difficult in men over 60 or suffering from kidney disease or cirrhosis, which is why doctors recommended starting with a dose of 25 mg Viagra. Drug use increases blood pressure and pressure of the blood in the lungs, sometimes creates difficulty in distinguishing between blue and green .

The drug should be administered with caution (only with prescription) in patients who had a heart disease or cardiac arrhythmia in the last 4-6 months, also in people with blood pressure less than 95/55, heart failure or angina, in those whose erection is longer than four hours or who have priapism, and in those suffering from diseases of the eye. Viagra should not be associated with drugs such as heparin, cimetidine, and ketoconazole.

A lot of men cannot turn to Viagra because of heart problems they have. Viagra increases the effect of nitroglycerin and nitrates, and the side effects include: a serious decrease in blood pressure, severe dizziness, fainting, and decrease in heart rate. These men can always turn to natural alternatives that have the same effect.

Researchers discovered another serious side effect: hearing disorders. Hearing can be affected because of the PDE-5 inhibitors these pills contain. Not only Viagra contains this type of inhibitors but also many other pills designed to maintain a firm erection, such as Cialis or Levitra. Those who use this type of pills are twice more likely not to hear the way they should. The effect occurs within hours or days after the man has taken pill.