Keytruda (pembrolizumab) is a prescription medicine used to treat certain types of cancer, including melanoma, lung cancer, head and neck cancer, and Hodgkin lymphoma. As with any medication, Keytruda may cause side effects.
According to the official Keytruda website [2], the most common side effects of Keytruda include fatigue, musculoskeletal pain, decreased appetite, itching, diarrhea, nausea, rash, fever, cough, shortness of breath, and constipation. Some of these side effects may be severe, and it is important to talk to your doctor if you experience any of these symptoms.
In addition, Keytruda can cause serious side effects related to the immune system, which is how the drug works. Keytruda can cause the immune system to attack healthy organs and tissues, leading to a range of symptoms. These symptoms may include inflammation of the lungs, liver, colon, and other organs, as well as problems with the endocrine system, which controls hormones in the body.
However, it is important to note that not everyone who takes Keytruda will experience side effects, and the severity of side effects can vary from person to person. Your doctor can help you understand the potential risks and benefits of Keytruda and monitor you for any side effects.
According to Cancer.net [3], it is important to contact your doctor immediately if you experience any of the following symptoms while taking Keytruda: chest pain, shortness of breath, cough, abdominal pain, diarrhea, blood in stool, jaundice, severe fatigue, or hormone-related symptoms such as rapid heartbeat, sweating, or changes in weight or mood.
In conclusion, Keytruda may cause side effects, including common side effects such as fatigue, musculoskeletal pain, and decreased appetite, as well as more serious side effects related to the immune system. However, not everyone who takes Keytruda will experience side effects, and it is important to talk to your doctor about any symptoms you may experience while taking this medication.
Sources:
[1] https://www.drugpatentwatch.com/p/biologics/tradename/KEYTRUDA
[2] https://www.keytruda.com/side-effects/
[3] https://www.cancer.net/navigating-cancer-care/how-cancer-treated/immunotherapy-and-vaccines/side-effects-immunotherapy