Drug lookup
Drug reference

Dimethyl fumarate

Immunosuppressant · Disease-modifying drug for Multiple Sclerosis

Also known as DMF

ImmunosuppressantDisease-modifying drug for Multiple Sclerosis
CDSCO approvedSchedule H
EXCRETION
not curated
INTERACTIONS
12 major
SEVERE in our sources
PREGNANCY
Use only if essential.
FDA category + note
Top interactionssee all 12
  • AdalimumabSevereDatabaseDDInter
  • BaricitinibSevereDatabaseDDInter
  • CertolizumabSevereDatabaseDDInter
  • CladribineSevereDatabaseDDInter

Mechanism

Its exact mechanism of action is unknown, but it appears to activate the nuclear factor (erythroid-derived 2)-like 2 (NRF-2) transcriptional pathway. Activation of the NRF-2 pathway results in reduction of the oxidative stress that contributes to demyelination. It also appears to help protect the nerve cells from inflammation.

Indications

Active relapsing-remitting multiple sclerosisrelapsing-remitting mssecondary progressive ms in adults

Dosing

Adult
the dose of either drug. Tizanidine p. 1192 or dantrolene sodium p. 1417 are second-line options; benzodiazepines may be used as third-line therapy and may also be effective in treating nocturnal spasms. A 4-week trial of cannabis extract p. 1190 can be offered as adjunctive treatment for moderate to severe spasticity in multiple sclerosis if other pharmacological treatments are not effective.…

Contraindications

  • Active infection
  • Latent or active tuberculosis

Side effects

Common
FlushingNauseaDiarrheaAbdominal painIncreased hepatic enzymesEosinophiliagi side effectscutaneous flushing
Serious
  • Significant lymphopenia
  • Tuberculosis reactivation
  • lymphopenia
  • pml
  • opportunistic infections (viral, fungal, bacterial)

Pregnancy & lactation

Pregnancy

Use only if essential.

Lactation

Avoid; no information available

Drug interactions

Adalimumab
Severe
Database

Drug interaction classified as: synergy

Source: DDInter

Baricitinib
Severe
Database

Drug interaction classified as: synergy

Source: DDInter

Certolizumab
Severe
Database

Drug interaction classified as: synergy

Source: DDInter

Cladribine
Severe
Database

Drug interaction classified as: synergy

Source: DDInter

Diroximel Fumarate
Severe
Database

Clinical effect not specified

Source: DDInter

Etanercept
Severe
Database

Clinical effect not specified

Source: DDInter

Fingolimod
Severe
Database

.

Source: DDInter

Golimumab
Severe
Database

Clinical effect not specified

Source: DDInter

Infliximab
Severe
Database

Clinical effect not specified

Source: DDInter

Leflunomide
Severe
Database

Clinical effect not specified

Source: DDInter

Lomitapide
Severe
Database

Clinical effect not specified

Source: DDInter

Measles Virus Vaccine Live Attenuated
Severe
Database

Clinical effect not specified

Source: DDInter

Related guidelines

Other Immunosuppressant drugs

Ask House about Dimethyl fumarate

Continue into a citation-backed clinical answer with the drug context already attached.

Sources: Goodman & Gilman 14e, BNF·Verified: 2026-05-13 · House clinical team