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Natalizumab Disease Interactions

There are 4 disease interactions with natalizumab:


Immunosuppressive agents (Includes natalizumab) ↔ infections

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

Serious and sometimes fatal infections have been reported in patients receiving immunosuppressive agents. Caution should be exercised when considering their use in patients with severe or chronic infections. It is recommended to interrupt therapy in patients who develop a new infection while undergoing treatment and to monitor these patients closely for any sign or symptom indicative of infection.


Immunosuppressive agents (Includes natalizumab) ↔ PML

Severe Potential Hazard, Moderate plausibility. Applies to: Immunodeficiency

Immunosuppressive agents may increase the risk of progressive multifocal leukoencephalopathy (PML). Certain agents are contraindicated in patients who have or have had PML. Patients receiving chronic immunosuppressant or immunomodulatory therapy or who have systemic medical conditions resulting in significantly compromised immune system function should not be treated with these agents. Healthcare professionals should monitor patients for any new sign or symptom suggestive of PML. Withhold therapy dosing immediately and perform an appropriate diagnostic evaluation at the first sign or symptom suggestive of PML.


Natalizumab (Includes natalizumab) ↔ liver dysfunction

Moderate Potential Hazard, Moderate plausibility. Applies to: Liver Disease

Postmarketing reports have associated the use of natalizumab with severe hepatic toxicity, including acute liver failure requiring transplant. Natalizumab should be discontinued in patients with jaundice or other evidence of significant liver injury and appropriate therapy should be instituted according to clinical guidelines.


Natalizumab (Includes natalizumab) ↔ meningitis

Moderate Potential Hazard, Moderate plausibility. Applies to: Herpes Zoster Meningitis

Natalizumab increases the risk of developing encephalitis and meningitis caused by herpes simplex and varicella zoster viruses. It is recommended to monitor patients receiving natalizumab for signs and symptoms of meningitis and encephalitis. If herpes encephalitis or meningitis occurs, treatment should be discontinued, and appropriate treatment for herpes encephalitis/meningitis should be administered.

Natalizumab drug interactions

There are 316 drug interactions with natalizumab

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.