Drinking alcohol is a major sin in Islam. Major sins lead to hell fire.
Allah, The Glorious ordered Muslims in Quran to be away from alcohol and called as (Evil from the work of Satan)(5:90).
Prophetic Hadeeth says : The person who drinks alcohol is like an idol worshiper. (Eqaab al-A'maal by Shaikh al-Sadouq).
Our leading scholars stated that denying the prohibition of alcohol is denying a compulsory rule in Islam which amounts to denying Islam as a religion.