Keytruda (
generic name: pembrolizumab) is an immunotherapy used to treat several types of cancer. It targets and blocks the
PD-1 (programmed death receptor-1) protein found on the surface of immune cells. By inhibiting
PD-1,
Keytruda enhances the immune system’s ability to detect and destroy cancer cells.
Pembrolizumab is approved to treat various cancers, including advanced melanoma, non-small cell lung cancer (NSCLC), head and neck squamous cell carcinoma (HNSCC), classical Hodgkin lymphoma (cHL), urothelial carcinoma, and others. It is classified as a
monoclonal antibody specifically designed to bind to specific proteins on the surface of cancer cells or immune cells, enabling the body to fight tumors more effectively. As part of the immunotherapy class,
Keytruda is often prescribed when traditional chemotherapy and radiation are not effective or as part of combination therapy for greater treatment efficacy.
Monoclonal antibodies like Keytruda, denoted by the suffix “
zumab,” belong to a family of medications that target specific antigens associated with diseases, particularly cancer. These antibodies are laboratory-produced molecules designed to serve as substitute antibodies,
enhancing the immune system’s ability to fight off malignant cells. This family of drugs works by interfering with proteins or receptors that inhibit the immune system’s natural cancer-fighting responses. For instance,
PD-1 inhibitors such as Keytruda prevent tumors from hiding from immune detection, allowing for a more robust immune response. Each “zumab” medication is tailored to address specific cancers or immune-related conditions by focusing on unique cellular markers.
Dosage
It is essential to follow the prescribed treatment schedule set by the healthcare provider. Keytruda is administered as a 30-minute intravenous (IV) infusion, typically every three or six weeks. The dosage varies depending on the type of cancer being treated, but the most common dosage is 200 mg every three weeks.
The treatment schedule can vary, but it often continues until the disease progresses, unacceptable side effects develop, or the patient’s healthcare provider decides to discontinue the treatment.
Storage
The drug must be stored in a refrigerator between 2-8°C / 36-46°F and should not be frozen or shaken.
If in any doubt, consult our blog on safe medicine management.
It must be shipped cold, and a shipping fee will be applied at checkout.
Common Questions About Keytruda
How does Keytruda work in treating cancer?
Keytruda works by blocking the PD-1 protein on the surface of immune cells, allowing the immune system to detect and attack cancer cells more effectively. PD-1 normally helps keep the immune response in check, but in cancer, this protein can prevent the immune system from fighting the disease. By inhibiting PD-1, Keytruda enhances the immune system’s ability to destroy cancerous cells.
How is pembrolizumab administered?
Pembrolizumab is administered through an intravenous (IV) infusion over 30 minutes. The typical dosing schedule is either every three weeks or six weeks, depending on the specific condition being treated. The healthcare provider will determine the exact dosing and duration based on the type of cancer and the patient’s response to the treatment.
Can Keytruda be used for lung cancer?
Yes, Keytruda is being widely used to treat non-small cell lung cancer (NSCLC), especially when the cancer is advanced or has spread to other parts of the body. It is often prescribed either alone or in combination with chemotherapy, depending on the patient’s PD-L1 expression levels and other clinical factors.
This text is for informational purposes only. Please consult a doctor or pharmacist before using any medication.Â
Read the information leaflet that comes with the medication.
Most people who use Keytruda do not experience any adverse side effects. Doctors prescribe this medication because they assess the benefits of such treatment outweigh any likely unwanted effects.
Some of the side effects that have been reported include fatigue, rash, itching, diarrhea, nausea, joint pain, and decreased appetite.
Some patients may experience more severe immune-mediated side effects, which occur when the immune system begins attacking healthy tissues. These can affect the lungs (pneumonitis), liver (hepatitis), intestines (colitis), kidneys (nephritis), hormone glands (hypophysitis), and other organs. Patients should seek medical attention if they develop a persistent cough, shortness of breath, jaundice, abdominal pain, or extreme fatigue.
Keytruda may also cause severe reactions during infusion, including fever, chills, low blood pressure, or difficulty breathing during or after the injection, requiring immediate medical attention.
Not all side effects are listed here. If these or other unlisted symptoms persist or worsen, consult a healthcare provider or pharmacist.
Keytruda is FDA-approved for the treatment of several cancers, including:
- Advanced Melanoma
- Non-Small Cell Lung Cancer (NSCLC)
- Head and Neck Squamous Cell Carcinoma (HNSCC)
- Classical Hodgkin Lymphoma (cHL)
- Urothelial Carcinoma
- Esophageal Cancer
- Cervical Cancer
- Renal Cell Carcinoma
Keytruda is often used in combination with other therapies or after the failure of standard treatments. It may also be used in cases of microsatellite instability-high (MSI-H) or mismatch repair deficient (dMMR) solid tumors.