The healthcare professional will administer the Cytarabine 1000mg Injection via a vein or under the skin The dosage and frequency of administration will be determined by your doctor depending on the purpose of the treatment It is crucial to follow your doctors instructions precisely as taking it incorrectly or in excessive amounts can lead to severe side effects It may take several weeks or months to notice any improvements so do not discontinue the medication unless instructed by your doctor Common side effects of this medication include rash skin ulcers nausea vomiting and hair loss Cytarabine may also decrease the number of blood cells including red and white blood cells which can increase the risk of infections or bleeding If you experience symptoms such as chills unusual bleeding or bruising or black and tarry stools inform your doctor immediately Regular blood tests are necessary to monitor your blood cells as well as heart liver and blood uric acid levels Prior to taking this medication inform your doctor if you have bleeding liver or kidney problems or if you are using any medications to treat infections It is important to disclose all medications you are currently taking as they may interact with Cytarabine The use of effective contraception by both males and females during treatment is strongly advised to prevent pregnancy Pregnant women and breastfeeding mothers are generally not recommended to use this medication