That's correct, all intoxicants are prohibited in Islam. The word (khamr) refers to any substance that masks a person's thinking ability (the word "khimaar" is a face veil, and both khimaar and khamr derive from the same root). And it's not a reading as much as an explicit text:
> "Every intoxicant is Khamr and every intoxicant is unlawful."
