Some gay men find themselves with erection problems, too shy to go to the hospital or too much trouble to see a doctor, so they go to the pharmacy to buy “Viagra” (Viagra, small blue pills, a kind of PDE5 inhibitors), but after using the drug still can not “hard”, this is What’s going on? In fact, the causes of erectile difficulties are complex and usually the result of multiple factors. It is important to know that erection of the penis is a complex vascular activity under neuroendocrine regulation, and this activity requires close coordination of neurological, endocrine, vascular, penile corpus cavernosum and psychological factors, and is affected by systemic diseases, nutrition and drugs, etc. Abnormalities in any of them may lead to erection difficulties. 1. primary disease is not treated, eat is also a waste of food! Before treating ED, the underlying disease, predisposing factors, risk factors and potential causes should be clarified, and the patient should undergo a comprehensive medical examination to determine the appropriate treatment plan. 2. psychological ED, eaten also useless? Psychological ED, drug factors or poor lifestyle caused by ED, the original problem must be resolved, otherwise it may be effective during the drug, stopping the drug will again appear erectile dysfunction. Especially for psychological ED patients, themselves prone to anxiety, depression, once found not to use drugs after erection problems again, will aggravate the vicious circle, the loss of confidence in the treatment. 3. eat “Viagra” to pay attention to, in order to “hard” up! Before taking the “little blue pill”, it is important to understand the precautions to take in order to achieve a better treatment effect. Some misconceptions: (1) the concept of time “small pills” and other drugs, like the oral need to take a certain amount of time to reach blood concentration, to sildenafil, for example, takes about 30-60 minutes of gastrointestinal absorption time, the duration of efficacy 4-6 hours. The ideal time for sex is 1-4 hours after taking the drug, many patients due to poor time control and affect the efficacy. (2) enough sexual stimulation Many people think that as long as you take the drug will have an erection, in fact, this is not the case, after taking the drug also have enough sexual stimulation, the drug to play an effect. ed treatment is not to take a piece of medicine on everything is fine, or need to have a better “foreplay”, so the wife’s cooperation is vital. If you just sit on the sofa and read the newspaper, it will not be effective. (3) Insufficient dose Many men worry about dependence on the “little pill” or bad for the body, and reduce the amount of medicine on their own. In fact, in the first 2-3 times of use, it is advisable to take the “full amount”, which can ensure the effectiveness of the drug and help the user to build sexual confidence. For patients with erectile dysfunction due to psychological factors, the dosage can be gradually reduced until finally the patient can successfully complete sexual life without taking the medication.