How to increase penis hardness

How to make the penis hardness enhanced, the treatment methods are: first, oral drug treatment, choose the normal Viagra preparations oral, about 75% of patients can achieve effective erection strength, these drugs can improve the arteriole expansion and increase congestion, so that the penis erectile enhancement, but need to be taken half an hour before sexual stimulation; There are also long-acting preparations, which can be taken 36 hours before sexual life. After taking it, you must accept effective sexual stimulation to promote erection. If you do not accept the relevant intensity of sexual stimulation, you cannot achieve full erection. Second, the use of physical therapy, vacuum erection device can make penis congestion, rapid erection, no particularly large side effects. Third, penile prosthesis implantation surgery, due to organic diseases or erectile dysfunction caused by neurological damage, penile prosthesis implantation surgery can achieve satisfactory erection strength.