14:29 - 2017/12/13
There is no problem in buying, selling and using liquids containing alcohol if you do not know whether it originally belongs to the category of a liquid intoxicant.
Question: Is it permissible to consume alcohol for medical purposes?
Answer: An alcohol which you do not know whether it originally belongs to the category of a liquid intoxicant is considered pure, and there is no problem in buying, selling and using liquids containing it.[1] It is permissible to use them to the extent required for treatment.[2]
1. Ayatollah Seyyed Ali Khamenei, Practical Laws of Islam, Q303.
2. Ayatollah Seyyed Ali Sistani, Question & Answer,Alcohol, Q3.