The present invention relates to pharmaceutical combinations of at least one thiopurine and/or at least a pharmaceutically acceptable salt and/or at least one prodrug thereof and riboflavin to treat patients suffering from inflammatory bowel disease (IBD) or other inflammatory conditions. This invention also relates to additive and/or combinations of at least one thiopurine and riboflavin. This invention is also related to a method for the treatment or prophylaxis of IBD or other inflammatory conditions, which method comprises administering a therapeutically effective amount of thiopurine and riboflavin.