1. Viagra is not an aphrodisiac. Only burning with passion can make you optimistic, but if you have a flat, depressed, or peaceful mind, no amount of Viagra can naturally make you thrive. (Note: Viagra, this is a drug name translated from Smart Chinese. The original name is Viagra, also known as Sildenafil. It was made by Pfizer in the United States. It was listed in 1998 and introduced in China in 2000. Viagra can only are properly accepted. The effect of promoting penile erection is only with sexual stimulation, it does not help to improve your libido.)

2. A man who secretly uses Viagra without his wife may arouse suspicion between the couple. A study from the University of Canterbury in New Zealand found that women surveyed (33-68 years old) had a number of concerns about their spouse secretly using Viagra. Her worries include feeling unnatural during sex and whether their husbands cheated on them. (Note: Many women attribute their husband's deteriorating erection quality to their loss of enthusiasm for themselves or to the man's empathy. Of course, there are also women who worry that their man can get strong erections with the help of drugs they increase your chances of fraud.)

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3. Approximately 70% of men who have used Viagra report that the ease, toughness, and durability of their penile erections were improved after taking Viagra. (Note: Viagra's mechanism of action is to widen blood vessels throughout the body, making it easier for blood to flow to the heart, lungs, and other organs. In addition, Viagra can also soothe the smooth muscles of the penis and make room for the Penis enlarge the penis to contain blood. If the penis is filled with blood, of course, erectile function improves significantly with increasing amounts.

4. The dosage of Viagra also depends particularly on the intake. You can usually choose between three dosages: 25 mg, 50 mg, and 100 mg. Usually take a dose of 50 mg for the first use. If the effect is not good, the dose can be increased to 100 mg. However, for people over 65, it is best to start with a dose of 25 mg. This little blue diamond shaped pill generally needs to be taken 1 hour before intercourse. After 30 minutes, it begins to produce effects and then the effect lasts for about 5 hours. (Note: Currently the dosage form of Viagra sold in China is mostly 100 mg per tablet. You can use a sharp knife to divide it into two or four.)

5. Viagra is not cheap, averaging around 100 yuan each. The reason for the extremely high prices is that the listing of domestic legal products of the same kind has been delayed. (Note: Pfizer has also discussed the pricing of its "Viagra." According to reports, the company's research and development costs for new drugs are generally held at $ 2,000 per day. Only Viagra has a single drug. And the research and development investment exceed $ 1 billion. Such a large investment in research and development is, of course, in the patient's pocket.)

6. Most of the Viagra sold online are counterfeit. Dr. Nick Wilson of the University of London, in a research study of Viagra sales online, pointed out that more than half of the Viagra sold online are counterfeit and substandard products, some of which differ in pharmaceutical ingredients and other effective ingredients are lower than real Viagra. . (Note: The current online sales are pretty hot. Different versions of Viagra are popping up in an endless stream. Many of them are filled with large numbers of counterfeit drugs. This is due to the huge profits made by the drug's online sales regulations are incorrect. Try not to shop online. Viagra.)

7. Viagra is not alone. Also, amid the temptation of Huge Payout Pornhub videos, it is inevitable to encounter strong competitors. When Viagra first came out in 1998, it was the only drug of its kind. Now it has two competitors: Levitra and Cialis. Vaidenafil works faster after ingestion. It only takes 16 minutes and the effects last up to 6 hours. It is said that the side effects are smaller than Viagra. Tadalafil is usually the first choice for patients with brief erectile dysfunction because its effectiveness lasts up to 36 hours and far outperforms the other two drugs. This means that there is no need to intentionally arrange intercourse time for the time of the drug, so that sex is more relaxed and natural. However, the side effects of the drug are said to be greater because the ingredients in the drug remain in the body longer. (Note: in fact, the clinical efficacy of the three drugs is generally the same, there is no obvious difference, and the side effects of these drugs are very small, so there is no need to consider the efficacy and side effects when choosing the appropriate drug according to your own situation. For example, young people with more energy and physical strength may choose Cialis, which has a long-lasting effect, while older and weak men may choose Viagra or Levitra.)

8. Every drug has side effects, and Viagra is no exception. Common side effects are headache, flushing, dizziness, palpitations, indigestion, blurred vision, and blue vision (blue when looking at things). In 2005 and 2007, the US FDA told Pfizer that Viagra's instructions were intended to educate users about the risk of blindness and deafness. In particular, it should be noted that the combination of Viagra and nitrate is lethal, and tadalafil is generic, the latter being commonly used to treat angina (like nitroglycerin). (Note: Generally, Viagra is a drug with relatively few side effects. It is seldom seen to be discontinued due to intolerable side effects, but it should be noted that it is strictly forbidden to use with nitrate drugs!)

9. In very rare cases, Viagra can cause priapism: The penis has had a painful erection for more than 4 hours and cannot go away on its own. Treatment must be carried out within 6 hours of the onset of priapism, otherwise the erectile tissues of the penis will be damaged and irreversible severe erectile dysfunction will result. (Note: this condition is extremely rare and occurs primarily in men who are prone to priapism.)

10. Viagra can cause male infertility. According to a study by Dr. David Glenn, a consultant and gynecologist at Queen & # 39; s University in Belfast, Viagra may affect sperm quality, and a small number of men who use Viagra as a sex drug are less likely to be a father to keep their spirits up to improve focus. (Note: After men take Viagra, the sperm in the body becomes more active. These tadpole-like little men use up their own energy prematurely due to overactivity. Even if they barely swim near the egg, the energy affects them. Exhausted and unable to An experiment with mice showed that mice that took Viagra produced 40% fewer embryos than mice that did not take Viagra.)

11. Some people use Viagra as a fun drug in night clubs as it can counteract the power of cocaine, ecstasy and amphetamines to suppress erections. But that can kill you. For example, mixing the aphrodisiac "poppers" (the main ingredient is amyl nitrate) and Viagra results in a sharp drop in blood pressure, which leads to shock, heart attack and even death. (Note: many drugs contain nitrates, and of course there is a lethal hazard when combined with Viagra.)

12. The user can become addicted to Viagra. With the widespread use of Viagra, many men with normal erectile function have also joined the “drug army”. Viagra has gradually evolved into a "lifestyle" drug, as if it were "out" without taking Viagra. Many healthy men take Viagra because they believe it can bring some new tricks to normal sex. For a healthy young man with strong sexual desire, self-confidence can usually cause them to show off in bed, and taking Viagra increases their self-confidence to unprecedented levels. (Note: Clinical studies have shown that 30% of men with impotence can get better erections just by taking a placebo (mostly from strength). The problem is, healthy men also rely on buying Cialis from Canada. Once Viagra is stopped, their self-confidence will be affected to varying degrees, leading to drug addiction.)

13. The effect of Viagra on promoting penile erection was accidentally discovered. The world's largest pharmaceutical company, Pfizer's laboratory in Sandwich, Kent, UK, initially developed a new drug for the treatment of cardiovascular diseases. During the drug study, they discovered that this medicine had a strange side effect. Volunteers in the drug study had easier erections after taking this new drug! This side effect resulted in these volunteers living abnormally in bed. When the drug study ended, everyone expressed a desire to continue taking the drug. (Note: Sildenafil was developed by Pfizer Pharmaceuticals in the US. It was first accepted into clinical research as a 5-phosphodiesterase inhibitor for the treatment of cardiovascular disease. Researchers hope that sildenafil can release biological agents. The active ingredient nitric oxide relaxes the smooth cardiovascular muscles and achieves the purpose of expanding blood vessels and relieving cardiovascular disease, but clinical studies have shown that the effects of sildenafil on the cardiovascular system are not what researchers expected. As a cardiovascular drug, Sildenafil Nafil's performance was disappointing and failed. In April 1991, the clinical trial of sildenafil officially failed, but a side effect reported by the subjects caught the researchers' attention. The researcher noted that the therapist was unwilling to hand over the remaining medication after receiving the medication Testd roe. Under investigation it was found that this drug had improved the patient's sex life. With the permission of Pfizer executives, Denafil's effects on the smooth muscle of the corpus cavernosum were studied and approved by the US Food and Drug Administration on March 27, 1998. It became a product that made Pfizer famous. That diamond-shaped shape, The Little Blue Pill, became the best-selling drug in history, and Pfizer's stock price doubled. Viagra created £ 1.5 billion in value in the global drug market.)

14. After Pfizer Pharmaceuticals hoped to develop "Female Viagra," it set up a female sexual dysfunction team to investigate Viagra's effectiveness in treating sexual indifference in women. They stopped the study after comparing the effects of Viagra and placebo, as placebo is effective in 85% of women. It seems that the name Viagra alone is enough to stimulate female sexual desire. (Note: there is a marked difference between the 20 mg dose of tadalafil in women and men. Men are mainly characterized by difficulty getting the penis erect and women are mainly caused by decreased libido, so treatment is completely different and cannot be generalized.)

15. The wave of “Viagra divorce” is increasing. Dominic Barbara, the woman who led fifteen other lawyers to start a successful law firm in Manhattan, helplessly said that in every 15 to 20 new divorce proceedings there is one case that has someone involved. Mentioned Viagra. (Note: Actually, Viagra is not the culprit in a divorce, but what's the main cause of a divorce? I think everyone understands of course …)

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