This is happening due to insufficiency of hormones and improper functions of serotonin. The good news is that this is easily treatable with our herbal tablets. These tablets improve blood supply to penis and nourish muscles and blood vessels of penis thereby making erection long and hard. At the same time, these tablets improve functions of serotonin thereby delaying ejaculation significantly. Oil may not be of much help as the problem is internal. Still, if you want, you can use srigopal tail and let me know your follow up. Regards Dr. Omkar Balkrishna Shahapurkar