Viagra is not an aphrodisiac. It only allows you to get a good erection when you’re horny, but if you’re sexually uninterested, depressed, or just quiet, eating more Viagra won’t give you a natural erection. (Note: Viagra, which is the name of a drug translated by the clever Chinese, formerly known as Viagra, also known as Viagra (Sildenafil), produced by the United States Pfizer, was launched in 1998 and introduced to China in 2000. (Viagra is only effective in promoting penile erection when you receive proper sexual stimulation; it does not help to increase your libido.) Men taking Viagra secretly without their wives’ knowledge can lead to suspicion between couples. A study by the University of Canterbury in New Zealand found that women surveyed (ages 33-68) harbored a range of concerns about their significant others secretly taking Viagra, and their worries included feeling unnatural during sex and whether their husbands were cheating on them. (Note: Many women attributed their husbands’ deteriorating erection quality to a loss of enthusiasm for themselves or to the fact that their husbands had fallen out of love. Of course, there are also women who worry that once their husbands get a strong erection with the help of drugs, they may increase the chances of cheating.) About 70% of men who have used Viagra report that the ease, hardness and longevity of their erections have improved after taking Viagra. (Note: Viagra works by a mechanism that dilates blood vessels throughout the body, allowing blood to flow more easily to the heart, lungs and other organs. In addition, Viagra also soothes the smooth muscles of the penis, allowing more room for the penis to hold blood. When the amount of blood filling the penis increases, erectile function will naturally improve significantly.) The dose of Viagra is usually available in three doses: 25mg, 50mg and 100mg. When you first start using it, you usually take a 50mg dose, and if it doesn’t work well, you can increase the dose to 100mg. This small, diamond-shaped blue pill is usually taken one hour before intercourse and begins to take effect after 30 minutes, and then the effect lasts for about five hours. (Note: Currently, most domestic Viagra is sold in 100mg tablets, which can be divided into two or four with a sharp knife.) Viagra is not cheap, on average about 100 yuan per tablet. The reason for the high price is the delay in getting a legal domestic product of the same kind to market. (Note: Pfizer also has a statement on its Viagra pricing, according to the company’s research and development costs for new drugs are generally maintained at $2000 per day, only Viagra a drug, research and development investment of more than $1 billion. (Such a high investment in research and development, naturally, in the pockets of patients.) Most of the Viagra sold online is fake. Nick from the University of London? Dr. Wilson pointed out in a research study of online sales of Viagra that more than half of the Viagra sold online are counterfeit products, some with different drug ingredients and some with lower content of ingredients that work than real Viagra. (Note: The current online sales are quite hot, with various versions of Viagra popping up, not the least of which is filled with a large number of counterfeit drugs, which is the result of the huge profits of the drug. (Try not to buy Viagra online at a time when the regulations for online sales are not yet sound.) Viagra is not a one-trick pony, in the lure of lucrative profits, also inevitably bumped into strong competitors. 1998 when Viagra was launched on the market, the only drug of its kind. Now it has two competitors: Elidel and Cialis. Vaidenafil, which has a faster onset of action of 16 minutes and lasts up to six hours, is said to have fewer side effects than Viagra. Tadalafil, which is usually the first choice for patients with short-lived erectile dysfunction because it lasts for up to 36 hours, far longer than the other two drugs. This means that there is no need to deliberately time intercourse for the duration of the drug, thus allowing for more relaxed and natural sex. However, the side effects of the drug are said to be greater, as the ingredients stay in the body longer. (Note: In fact, in general, the clinical effectiveness of the three drugs is basically the same, there is no significant difference, and the side effects of these drugs are very mild, so there is no need to consider the issue of efficacy and side effects when choosing. (To combine their own situation to choose the right drug, such as young people are more energetic physical strength, you can choose a long duration of efficacy of cialis, while older frail men may wish to choose Viagra or Alida.) Any drug will have side effects, and Viagra is no exception. In 2005 and 2007, the FDA notified Pfizer that the risk of blindness and deafness should be communicated to the user in the instructions for Viagra. In particular, it should be noted that Viagra is lethal when combined with nitrates, which are commonly used to treat angina (e.g., nitroglycerin). (Note: Generally speaking, Viagra is a drug with mild side effects and it is rare to discontinue its use because of intolerable side effects, but always remember that combining it with nitrates is strictly forbidden!) In rare cases, Viagra can cause an abnormal erection: a painful erection that lasts for more than 4 hours and does not weaken on its own. Abnormal erections must be treated within 6 hours of occurrence, otherwise they can damage the erectile tissue of the penis and cause irreversible and severe erectile dysfunction. (Note: This is extremely rare and mostly occurs in men who have a tendency to have abnormal penile erections themselves.) Viagra has the potential to cause male infertility. According to Queen’s University Belfast consultant and gynecologist David K. According to a study by Dr. Glenn, Viagra has the potential to impair sperm quality, and the few men who take Viagra as a sex drug have a decreased chance of being a father. (Note: When men take Viagra, the sperm in their bodies become more active. These little tadpole-like creatures exhaust their energy early due to overactivity, and even if they barely reach the egg, they are unable to enter the egg cell due to energy depletion. (A test with rats showed that rats taking Viagra produced 40% fewer embryos than those not taking Viagra.) Some people use Viagra as a fun drug when clubbing because it counteracts the erection-suppressing power of cocaine, ecstasy and amphetamines. But this may kill you. For example, mixing the aphrodisiac “Poppers” (the main ingredient is amyl nitrate) with Viagra can cause a dramatic drop in blood pressure, which can lead to shock, heart attack or even death. (Note: Many drugs contain nitrates, which are certainly lethal when combined with Viagra.) There is a risk that the user may become dependent on Viagra. With the widespread use of Viagra, many men with normal erectile function have also joined the “army of taking drugs”, Viagra is gradually becoming a “lifestyle” drug, as if not taking Viagra will become “out “The same. Many healthy men take Viagra because they are sure it will bring something new to the mundane sex. And for a healthy young man with a high sex drive, confidence is usually enough to make him feel good in bed, and taking Viagra will give them an unprecedented boost of confidence. (Note: Clinical trials have shown that 30% of impotent men can get a better erection simply by taking a placebo (mostly made of starch). The problem arises because healthy men also become dependent on it, and once they stop using Viagra, their self-confidence is affected to varying degrees, thus creating a drug dependency.) The effectiveness of Viagra in promoting penile erection was discovered by accident. The world’s largest pharmaceutical company – Pfizer’s laboratory in Sandwich, Kent, England was initially developing a new drug to treat cardiovascular disease, and during the drug trials, they noticed a strange side effect of the drug – the volunteers who participated in the drug The volunteers in the trial had an easier time getting an erection after taking the new drug! This side effect made the volunteers so violent in bed that when the drug trial was over, they said they wanted to continue taking the drug. (Note: Sildenafil, developed by Pfizer, was first introduced into clinical studies as a 5-phosphodiesterase inhibitor for the treatment of cardiovascular disease. Researchers hoped that sildenafil would release the biologically active substance nitric oxide to relax cardiovascular smooth muscle, resulting in vasodilation and relief of cardiovascular disease. However, clinical studies showed that the cardiovascular effects of sildenafil did not meet the researchers’ expectations, and as a cardiovascular drug, sildenafil performed disappointingly and could not grow into a successful therapeutic agent. in April 1991, the clinical study of sildenafil was officially declared a failure, but a side effect reported by the subjects caught the researchers’ attention. Researchers found that treatment recipients were reluctant to hand over the rest of the drug after receiving the trial. Upon follow-up, it was discovered that this one drug had improved the patients’ sex lives. With permission from Pfizer executives, researchers conducted a study on the effects of sildenafil on the smooth muscle of the penile corpus cavernosum, and on March 27, 1998, received marketing approval from the U.S. Federal Food and Drug Administration, making it a product that made Pfizer’s name. The little diamond-shaped blue pill became the best-selling drug of all time, and Pfizer’s stock price doubled. (Viagra has generated £1.5 billion in the global drug market.) With hopes of developing a “female Viagra”, Pfizer set up a female sexual dysfunction team to investigate the efficacy of Viagra in treating female frigidity. They stopped the study after comparing the effects of Viagra to placebo, which worked for 85% of women. It seems that the mere name of Viagra is enough to be able to arouse women’s sexual desire. (Note: Female sexual dysfunction is distinctly different from male sexual dysfunction, with men having difficulty getting an erection and women having decreased libido, so the treatment is very different and cannot be generalized.) The wave of “Viagra divorce” is surging. Dominique Barbara, the woman who led fifteen other attorneys to create a successful law firm in Manhattan, noted reluctantly that for every 15 to 20 new divorce cases, Viagra is mentioned in one case. (Note: In fact, Viagra is not the culprit of divorce, but the main cause of divorce in the end, I think we naturally know in our hearts ……)