Are there medications to treat/cure alcoholism?

Yes, there is help. Medications alone are not sufficient for achieving sobriety. One must learn to cope with life's challenges, disappointments, awkward moments, losses, victories, etc. By responding in ways that don't involve alcohol or other substances. There is a role for medications in treating alcohol dependence, especially at the beginning of a journey toward sobriety, but personal learning is necessary.
No. Substance abuse experts do not speak of "cure" regarding alcoholism. Sustained sobriety is the goal. There are several effective prescription medications to assist with maintaining sobriety. Your doctor can help you decide which might be right for you. A twelve step program such as alcoholic anonymous can also support you in your continued recovery.