Pembrolizumab is an anticancer medicine that is useful for the treatment of several cancers such as gastric cancer, liver cancer, lung and skin cancer. The brand name of this medicine is Keytruda and it is an immunotherapy medicine. Pembrolizumab works by targeting the PD-1/PD-L1 pathway. Some of the side effects of Pembrolizumab are such as sore throat, pale skin, muscle cramps, skin rashes, blurred vision, stuffy nose, and constipation. The Pembrolizumab 100mg Injection Price is high and hence it is advisable to gather complete information before starting the treatment.