Pemetrex 100mg Injection is administered as an injection by a qualified medical professional The dosage and frequency of administration will be determined by your doctor based on your specific treatment needs It is important to strictly follow your doctors instructions as taking this medication incorrectly or taking too much can lead to severe side effects It may take some time possibly weeks or months to experience the benefits of this medication so it is essential not to stop taking it unless advised by your doctor Common side effects of Pemetrex 100mg Injection include nausea vomiting loss of appetite and hair loss This medication can also potentially decrease the number of blood cells including red and white blood cells making you more susceptible to infections Regular blood tests are necessary to monitor your blood cell count as well as heart liver and blood uric acid levels Inform your doctor about any preexisting heart disease liver or kidney problems or if you are taking any medications to treat infections Pemetrex 100mg Injection can interact with other drugs so it is important to disclose all medications you are currently using This medication is not recommended for use during pregnancy or while breastfeeding During treatment it is crucial for both males and females to use effective contraception to prevent pregnancy