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Lemtrada (alemtuzumab) Disease Interactions

There are 3 disease interactions with Lemtrada (alemtuzumab):


Alemtuzumab (Includes Lemtrada) ↔ cytopenias

Severe Potential Hazard, Moderate plausibility. Applies to: Bone Marrow Depression/Low Blood Counts

Severe, including fatal, autoimmune anemia and thrombocytopenia, and prolonged myelosuppression have been reported in patients receiving alemtuzumab. It is recommended to withhold therapy for severe cytopenias and to discontinue therapy for autoimmune cytopenias or recurrent/persistent severe cytopenias (except lymphopenia). It is recommended to monitor complete blood counts (CBC) at weekly intervals during therapy and more frequently if worsening anemia, neutropenia, or thrombocytopenia occurs and to assess CD4+ counts after treatment until recovery to >= 200 cells/µL.


Alemtuzumab (Includes Lemtrada) ↔ cardiac/pulmonary disease

Moderate Potential Hazard, Moderate plausibility. Applies to: Heart Disease, Pulmonary Impairment

The use of alemtuzumab can cause severe infusion reactions, including pyrexia, chills/rigors, nausea, hypotension, urticaria, dyspnea, rash, emesis, and bronchospasm. Caution should be taken in patients with a history of pulmonary disease, heart disease as they may require dose-escalation and additional pre-infusion medications to manage complications as appropriate.


Alemtuzumab (Includes Lemtrada) ↔ infections

Moderate Potential Hazard, Moderate plausibility. Applies to: Infection - Bacterial/Fungal/Protozoal/Viral

Alemtuzumab should be used with caution in patients at risk of opportunistic infections, as therapy could result in severe and prolonged lymphopenia. It is recommended to administer prophylaxis against Pneumocystis jiroveci pneumonia (PCP) and herpes viral during and for a minimum of 2 months after completion of therapy or until the CD4+ count is >=200 cells/µL. Routinely monitor patients for CMV infection during therapy and withhold therapy for serious infections and during antiviral treatment for CMV infection or confirmed CMV viremia.

Lemtrada (alemtuzumab) drug interactions

There are 320 drug interactions with Lemtrada (alemtuzumab)

Drug Interaction Classification

The classifications below are a general guideline only. It is difficult to determine the relevance of a particular drug interaction to any individual given the large number of variables.
Major Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit.
Moderate Moderately clinically significant. Usually avoid combinations; use it only under special circumstances.
Minor Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan.
Unknown No information available.

Do not stop taking any medications without consulting your healthcare provider.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.