Viagra (trade name: Viagra, chemical name: Sildenafil) is a chemical used to treat erectile dysfunction, i.e. impotence. At first, this drug was used to treat pulmonary hypertension, and in the course of treatment, it was found that this drug could significantly improve the erectile function of the penis, and then used to treat erectile dysfunction until now. It is a commonly used drug in the treatment of sexual dysfunction in urology and male medicine. Influenced by traditional concepts, after the emergence of erectile dysfunction, a part of the people choose not to go to the hospital for treatment, secretly take their own medication, while the other part of the people think that Viagra is an aphrodisiac, harmful to the body, worried about the side effects of the drug, for fear of drug dependence, and thus refused to take Viagra treatment. So, is Viagra an aphrodisiac? Does the human body become dependent on Viagra? Let’s recognize and understand Viagra below. First, the mechanism of Viagra’s action Viagra to improve the function of penile erection is through its cause of penile erection arterial vasodilatation, so that more blood flows into the penile cavernous body when the penis is erected, resulting in penile congestion and erection, erection hardness increased significantly. Problems to be noted when taking Viagra for treatment: 1. The absorption of the drug takes some time, so it should be taken in advance 1-2 hours before sex. 2. The effect of Viagra requires sexual stimulation as a prerequisite. Some people have been watching TV or cell phones after taking the drug, wrongly waiting for spontaneous erection of the penis, which results in poor or ineffective results. Only with effective sexual stimulation can Viagra find pharmacological effects. Second, the side effects of Viagra 1. Like all drugs inevitably have side effects, Viagra also has its side effects. Sometimes it will cause mild dilation of peripheral blood vessels, manifested as facial flushing, dizziness, occlusion, etc. Most of them are transient, short-lived and mild. It will not affect the sex life, and will not affect the cardiovascular function. 2. The addictive nature of the drug refers to: the drug can give a person a state of mental pleasure, the existence of withdrawal and difficult to control the reaction, the emergence of drug-seeking behavior and frequent drug-taking behavior. Viagra is not reported to be addictive in the World Health Organization Adverse Drug Reaction Database. 3. Effects on male reproductive function: In the safety study of Viagra, it was found that taking regular doses of Viagra, long-term application of healthy men’s semen volume, sperm density, sperm vitality and viability have no effect, and do not affect the level of sex hormones, including testosterone. Researchers analyzed that Viagra can not only directly improve sperm vitality, but also improve the secretion function of prostate and seminal vesicle glands to create a better environment for sperm to survive. Therefore, Viagra is an effective drug for the treatment of erectile dysfunction, not the so-called “aphrodisiac”, no obvious adverse drug reactions, will not produce dependence, no effect on fertility. But you need to go to a regular hospital urology men’s clinic, under the guidance of the physician to use the drug.