Can methotrexate be safely combined with other drugs?

Can methotrexate interact with other drugs?

Methotrexate can interact with many common medications. These interactions may raise methotrexate levels in the blood, increase its toxicity, or reduce its effectiveness. Patients taking methotrexate for rheumatoid arthritis, cancer, or other uses should discuss all medications and supplements with their doctor before combining them.

Which drugs raise methotrexate levels?

NSAIDs such as ibuprofen and naproxen can slow methotrexate elimination. This can lead to higher methotrexate levels and toxicity. Patients often replace NSAIDs with acetaminophen when possible.

Trimethoprim-sulfamethoxazole (Bactrim) also competes with methotrexate for elimination pathways. The combination is usually avoided unless closely monitored.

How does methotrexate interact with alcohol?

Alcohol increases the risk of liver damage from methotrexate. Doctors typically recommend limiting or avoiding alcohol completely while taking the drug.

What happens when methotrexate is combined with live vaccines?

Live vaccines may cause severe infection in patients taking methotrexate because the drug weakens the immune system. Patients should avoid live vaccines like MMR or varicella while using methotrexate.

When does methotrexate patent protection end?

Methotrexate has been off-patent for decades. Generic versions dominate the market and keep prices low.