Methotrexate is contraindicated in patients with active liver disease due to its potential to cause severe hepatotoxicity, exacerbating existing liver impairment.
Absolute contraindication in active alcoholic or other liver disease; baseline LFTs must be normal before starting.
Hepatotoxicity risk is dose-dependent and cumulative; monitor AST/ALT monthly during low-dose therapy.
Avoid in patients with history of liver dysfunction; alternative therapies should be prioritized.
Alcohol consumption further potentiates risk and should be prohibited.
Methotrexate inhibits dihydrofolate reductase, leading to folate deficiency and accumulation of toxic metabolites in the liver. In active liver disease, reduced hepatic metabolism and clearance increase drug exposure, promoting oxidative stress, inflammation, and fibrosis.
Risk of acute liver enzyme elevation, chronic hepatitis, hepatic fibrosis, cirrhosis, and potentially fatal liver failure; may worsen underlying liver pathology and increase mortality.
Avoid initiation in patients with active liver disease. If unavoidable (e.g., in oncology), obtain baseline liver function tests, use lowest effective dose, monitor LFTs frequently, and consider dose reduction or discontinuation if abnormalities occur. Hepatology consultation recommended.
Was this helpful?
The content on SafeTo is for informational purposes only and does not constitute medical, veterinary, or professional advice. Always consult with a qualified professional for specific concerns.
Hot chocolate contains small amounts of tyramine and phenylethylamine, which can interact with MAOIs, potentially leading to a hypertensive crisis if consumed in large quantities, though the risk is generally low with moderate intake.
Kale, a vitamin K-rich leafy green, can interact with warfarin by potentially reducing its anticoagulant effects if intake is inconsistent or excessive.
Large amounts of lime juice may mildly interact with certain statins, similar to but less potent than grapefruit juice, by inhibiting drug metabolism and potentially increasing statin levels in the blood.
