Buying and Selling: Buying and Selling Impure Medicine
Practical Laws of Islam as per the teachings of Ayatullah Sistani
Ruling 2066
Buying and selling impure consumable and non-consumable medicine is permitted; however, the seller must inform the buyer of it being impure in the situation mentioned in the previous ruling.
-Ayatullah Sistani, Practical Laws of Islam, Buying and Selling


