KEYTRUDA (pembrolizumab) 100mg Injection is an anticancer medicine used alone or in combination with other medicines for the treatment of various types of cancers such as melanoma (a type of skin cancer), certain types of non-small-cell lung cancer (NSCLC), head and neck cancer, Hodgkin lymphoma (Hodgkin’s disease), primary mediastinal large B-cell lymphoma (PMBCL; non-Hodgkin lymphoma), Urothelial cancer (type of cancer lining of the bladder and urinary tract cancer), colorectal cancer (cancer that begins in the large intestine), Cervical cancer(lower-most part of the uterus (womb), Gastric cancer (stomach cancer), and hepatocellular carcinoma (certain type of liver cancer).