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Methotrexate (Maxtrex)

Other names: Maxtrex

Non branded versions are available.

Methotrexate is an immunosuppressant drug used in the treatment of cancer, arthritis and psoriasis.

It is not a first line treatment for multiple sclerosis, but research has shown that it can reduce relapse rates and slow progression in people with MS. It is not one of the standard disease modifying drugs for relapsing MS used in the UK.

How is methotrexate given?

Methotrexate is taken orally as tablets.

Side effects and contraindications

Methotrexate was well tolerated at the low doses used in the research. Longer-term use may be associated with serious side effects, including lung and liver problems, and the suppression of bone marrow. As a result, methotrexate is not a first line treatment for multiple sclerosis.

Methotrexate research

Research in relapsing forms of multiple sclerosis has shown methotrexate to have an effect on reducing the relapse rate and in slowing progression in the short-term. Researchers in France have explored methotrexate in combination with the steroid methylprednisolone to control aggressively relapsing MS before moving people onto one of the other disease modifying drugs.

Studies have tested methotrexate as a treatment for progressive forms of MS and found that it may have a role in slowing progression and helping with psychological symptoms in people with moderate disability.

A US study carried out in 2016 tested high-dose methotrexate on a small group of patients with central nervous system diseases. 6 out of the 12 patients who took part in the study were people with MS who had considerable disability (equal to or greater than 6.0 on the EDSS). A single dose of methotrexate was administered through the vein over two hours. The patients were then given leucovorin – a drug used with higher doses of methotrexate to help reduce potential side effects. The majority of MS patients saw improvements in their EDSS score and complete or near complete resolution of lesions within 6 months. The main side effects reported were nausea, vomiting and headaches shortly after the methotrexate had been administered. The study concluded that high-dose methotrexate with leucovorin was a ‘safe and highly effective treatment’. A larger, controlled study is being planned.

How is MS treated?

How is MS treated?

Find out about the different types of treatments for MS, when to seek treatment and the support that's available to you. 

Last reviewed: June 2017
Last updated: June 2017
This page will be reviewed within three years

More references

  • Beh SC, et al. High-dose methotrexate with leucovorin rescue: For monumentally severe CNS inflammatory syndromes. Journal of Neurological Sciences 2017;372:187-195. Full article (PDF, 987KB)
  • Goodkin DE, et al. Low dose (7.5mg) oral methotrexate reduces the rate of progression in chronic progressive multiple sclerosis. Annals of Neurology 1995;37:30-40. Summary
  • Sadiq SA, et al. Intrathecal methotrexate treatment in multiple sclerosis. Journal of Neurology 2010;257(11):1806-1811. Summary

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