Drug General Information (ID: DDI3P605QY)
  Drug Name Methotrexate Drug Info Satralizumab Drug Info
  Drug Type Small molecule Monoclonal antibody
  Therapeutic Class Antimetabolites Interleukin Inhibitors

 Mechanism of Methotrexate-Satralizumab Interaction (Severity Level: Moderate)
     Increased risk of hepatotoxicity Click to Show/Hide Mechanism Graph
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      Drug Name Methotrexate Satralizumab
      Mechanism Hepatotoxicity Hepatotoxicity
      Key Mechanism Factor 1
Factor Name Hepatotoxicity
Factor Description Combination of drugs that can induce hepatotoxicity may increase the risk of liver injury. Symptoms vary depending on the level of exposure and the total extent of liver damage, and may cause few symptoms if the damage is mild, and eventually lead to liver failure in patients with severe damage.
      Mechanism Description
  • Increased risk of hepatotoxicity by the combination of Methotrexate and Satralizumab 

Recommended Action
      Management The risk of hepatic injury should be considered when methotrexate is used with other potentially hepatotoxic agents (e.g., acetaminophen alcohol androgens and anabolic steroids antituberculous agents azole antifungal agents ACE inhibitors cyclosporine (high dosages) disulfiram endothelin receptor antagonists interferons ketolide and macrolide antibiotics kinase inhibitors minocycline nonsteroidal anti-inflammatory agents nucleoside reverse transcriptase inhibitors proteasome inhibitors retinoids sulfonamides tamoxifen thiazolidinediones tolvaptan vincristine zileuton anticonvulsants such as carbamazepine, hydantoins, felbamate, and valproic acid lipid-lowering medications such as fenofibrate, lomitapide, mipomersen, niacin, and statins herbals and nutritional supplements such as black cohosh, chaparral, comfrey, DHEA, kava, pennyroyal oil, and red yeast rice). Baseline and periodic monitoring of hepatic function is recommended, while liver biopsy may be warranted during long-term use of methotrexate. Patients should be advised to seek medical attention if they experience potential signs and symptoms of hepatotoxicity such as fever, rash, itching, anorexia, nausea, vomiting, fatigue, right upper quadrant pain, dark urine, pale stools, and jaundice.

References
1 Cerner Multum, Inc. "UK Summary of Product Characteristics.".
2 Product Information. Methotrexate (methotrexate). Lederle Laboratories, Wayne, NJ.