Suggest Medicine For Erectile Dysfunction

I tend to loose erection sometimes during the act. I visited a sexologist and he did some 1st stage test which included blood and Urine test. All the results were good but he told me that based on some formula my sexual energy level is coming low. As per him max energy level is 27 and i was getting 16. He suggested me to undergo laser therapy for increasing the sexual energy. please suggest if this Ed can be treated with some tablets.? I suffer from gastric problem occasionally and I am 30 years old with a family history of high bp.