Constipation, dizziness or fainting, changes in appetite, thirst, or urine, confusion, memory problems, Muscle Pain or weakness, fever, rash, itching, or flushing. There may be other side effects. Tell your doctor about all your medical conditions, including Immune System problems, if youve had or plan to have an Organ Or Stem cell transplant, received Chest Radiation or have a nervous system problem. Keytruda is an immunotherapy and is also being studied in hundreds of clinical trials exploring ways to treat even more types of cancer. Its tru. Keytruda from merck. See all the types of Cancer Keytruda is known for at keytruda. Com and ask your doctor if keytruda could be right for you. Hi, im kim, and i lost 67 pounds on golo. When i was diagnosed with breast cancer, food became my comfort. I didnt think i looked pretty anymore, so i let myself go. Ive seen the golo commercials for a while. What stuck out to me most was there was no celebrity endorser