Viagra, for some men, is a miracle drug. In the event that they have a high sex drive and at the same time feel that they are not strong enough, Viagra becomes their most powerful “little helper”. However, many men who use it only know one thing but not two, as long as it is a drug, there will definitely be side effects, and Viagra is no exception. So, what things should we pay attention to when using Viagra for the first time? First, should I use the drug? Most men who occasionally experience the condition do not need to use the drug, as long as they adjust themselves. In addition, whether the drug can bring you improvement, or whether you have contraindications, etc., these need the doctor to help decide. Second, how much dose to use Because the severity of impotence is different for each person, and the combined diseases are different, making a big difference in the choice of drug dose, so you should never decide on your own how much medication to use. How to adjust the medication As your condition changes, you may need to reduce the dosage or even gradually stop the medication. It may be necessary to increase the dosage to obtain sufficient efficacy. In addition, impotence often coexists with other diseases such as diabetes, hypertension, prostate enlargement, etc. This requires a multidisciplinary approach with other types of medications to coordinate the improvement of this series of co-existing diseases. The problem of sexual dysfunction is more complex than other diseases, and men need the guidance of a doctor to choose the right time for sexual intercourse, to understand the general knowledge of sexual intercourse, and to use drugs. Fifth, the self-purchase will not have fake drugs Currently, there are many irregularities in the market to add the western medicine ingredients of the drugs, due to this type of fake drugs with unequal doses of active ingredients, uneven composition, resulting in its effect is difficult to control, and even add the ingredients between the difficult to avoid the occurrence of mutual effects and lead to adverse reactions, therefore, blindly buy will give yourself unsafe hidden danger.