Some Medical Ironies
* Anti-histamines, the drugs commonly used to treat allergy, can themselves cause an allergic reaction in certain people.
* Ciprofloxacin, the antibiotic used to treat 'traveller's diarrhea' can itself cause diarrhea as a side-effect.
* Some drugs used in the chemotherapy for cancer (such as Alkylating agents) are so toxic that they themselves can cause the development of secondary cancers.
* Anti-arrythmic drugs, used to treat the arrythmias (abnormal beatings) of heart, have the capability of producing arrythmias.