Ethyfos 500mg injection contains the active constituent Amifostine. It belongs to the class of medications called adjunct chemoprotective agents. It protects the kidneys from the harmful effects of the chemotherapy drug (cisplatin) in patients that receive this medication to treat ovarian cancer. It is also used to decrease dryness in the mouth caused by radiation treatment after head and neck cancer surgery. It works by protecting against the harmful effects of chemotherapy medications and radiation treatment.  Inform your healthcare professional if you have a history of low blood pressure, stroke, seizure or any other complication before initiating the therapy. Do not take Ethyfos 500mg injection if you are allergic to Amifostine or any of the other ingredients. Inform your physician if you get a red itchy rash and hives in the skin after administration of the injection. Do not take this medicine if you are pregnant or planning for pregnancy. Inform your physician if you have any history or liver disease, kidney disease, heart disorders, heart failure, or heart rhythm changes. The most common adverse reactions are reduced blood pressure, nausea, and vomiting. This medicine may impair fertility; talk with your doctor if you are planning for pregnancy.