Immunotherapy is one of the biggest advancements in cancer treatment today. One of the most commonly used drugs is Pembrolizumab  (Keytruda). But a very important question patients ask is:👉 “Is this treatment safe for me, and how do I take it correctly?” Immunotherapy is powerful, but only when used in the right patient, at the right time, with the right monitoring. TL;DR Pembrolizumab  works by activating your immune system to fight cancer by removing the “brakes” that canc