ED is short for Erectile Dysfunction, a condition in which it is impossible to achieve or maintain a full erection of the penis for a satisfactory sexual life for more than 6 months. Properly understand the meaning of ED. First, “continuous” refers to a continuous period of more than 6 months, an occasional or short period of erectile dysfunction should not be regarded as ED; so if young friends, an occasional failure of sexual life, do not prematurely put an ED hat on yourself, adding to the psychological burden. Second, if you are very satisfied with the quality of your sex life, then you also do not have ED problems. Due to the lack of common knowledge about ED, many ED patients carry a heavy burden of thought, affecting normal family life, but also often become withdrawn and easily irritable, thus affecting interpersonal relationships. Normal penile erection requires not only the normal structure and function of the penile corpus cavernosum, but also the normal blood vessels, nerves, and androgenic joint participation. It is now generally accepted that the development of ED is the result of a variety of factors, ED and psychological and many physical diseases (hypertension, diabetes, cardiovascular disease), drugs, trauma and surgery, etc.. The various influencing factors mentioned above will ultimately affect penile erection by affecting the blood flow into the cavernous body of the penis. In turn, the erectile state of the penis can indirectly reflect the state of the systemic cardiovascular and cerebrovascular. 5-6 months earlier than the appearance of cardiovascular disease symptoms, the blood vessels of the penis are equivalent to the systemic cardiovascular and cerebrovascular extensions in vitro, ED is the external manifestation of cardiovascular problems, so the middle-aged and elderly friends who have ED should go to the hospital for early examination, timely detection of potential diseases, to prevent cardiovascular accidents. If the ED is found how to treat? The currently accepted use of small doses of phosphodiesterase inhibitors (PDE5i) is the treatment of choice for ED and is effective for most causes of ED. The structure of the penis is similar to a sponge and contains a large amount of blood sinus tissue, internally called cavernous smooth muscle. For an adequate erection, the penis needs the cavernous smooth muscle of the penis to be fully dilated in order to hold enough blood like a sponge for the penis to achieve adequate hardness. The action of phosphodiesterase inhibitors can cause the release of a substance called nitric oxide within the cavernous tissue of the penis, which allows the cavernous smooth muscle to fully dilate, thereby increasing the amount of blood entering the cavernous blood sinuses and the penis to achieve an erection. The main phosphodiesterase inhibitors commonly used on the market today are Xylazine, Viagra, Alizarin and other products. Now people have a wrong view that these drugs are sex pills, eat useful, do not eat useless, long-term use will produce dependence. In fact, these views are wrong. First of all, these drugs are not hormones, will not produce dependence. Secondly, as mentioned above, ED is part of systemic cardiovascular disease, so the current treatment of choice for ED is similar to the treatment model for hypertension, which is a small daily dose of oral phosphodiesterase inhibitors. No one would consider medications for hypertension to be dependent. Of these three classes of phosphodiesterase inhibitor drugs, cialis is the only one that is long-acting (effective within 36 hours) and therefore more appropriate as a daily low-dose treatment modality. Some of you may ask why you need to take this type of drug without sex, isn’t it a waste? If you’ve been to the gym, you know that if you want your muscles to be fit and strong, you need to regularly and constantly stimulate and exercise this muscle. Small doses of phosphodiesterase inhibitors taken daily are equivalent to getting regular exercise for your spongy smooth muscle every day, making its stretching more powerful, and the effect is naturally better than three days of fishing and two days of sunbathing (taken on demand). So, ED is not a small problem, the correct understanding of ED, timely screening of potential diseases, we can enjoy a healthy, sexually happy life.