Cemiplimab, or Libtayo

Cemiplimab, or Libtayo

This patient-friendly article is about chemotherapy drug, Cemiplimab, or Libtayo which has a common trade name of Libtayo and is used to treat cutaneous squamous cell carcinoma (CSCC), a type of skin cancer.

It is a monoclonal antibody that binds to PD-1 and inhibits the PD-1 pathway. This allows the T-cells to identify cancer cells as abnormal cells and attack them. 

The recommended dosage is 350 mg IV every 3 weeks for 30 minutes. The medication is usually given until the patient’s body no longer responds to the medication.

Approved by

the Medical Board. 

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Common side effects include fatigue, rash, diarrhea, nausea, constipation and musculoskeletal pain. 

Precautions: Because of the mechanism of the drug altering the immune system of the body to attack the cancer cells, there’s a possibility that it could attack the healthy tissues, affecting multiple organs and can become fatal.These potential adverse reactions could be:


  • Complications in the lungs, liver, colon, hormones and/or kidneys
  • Adverse reactions of the skin
  • infusion-related reactions 
  • damaging the embryo (embryo-fetal toxicity) if the medical drug is used during pregnancy.

Go to: 10 ways to improve your chemotherapy success and reduce side-effects

Other articles that you may find interesting are:

  1. A diet for Chemotherapy
  2. Immunotherapy overview
  3. A to Z Guide to Complementary Therapies

Go to: Return to the CANCERactive drug list

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