Talk to Sexologist on Early Ejaculation

I am using surbex-z and avoiding sex for the last 25 days;i am feeling better now Alhamdulillah. Could you please tell me how many days i can extend this dosage for permanent solution to enhance timing. Also please confirm me how much amount of minerals like zinc i can take on daily basis. If any other medication is available for boosting sexual timing naturally and gradually then you can prescribe it please.