unwanted effects

Last reviewed 01/2018

Commonly reported unwanted effects include:

  • gastrointestinal symptoms (44% of patients):
    • nausea
    • diarrhoea
    • dyspepsia
  • unwanted effects occurring in up to around 10% of patients - eczema or dry skin; alopecia; dizziness and/or headache; mildly raised blood pressure; leucopenia (white cell count >= 2 x 10^9/l); mild elevation in liver enzymes

Rare unwanted effects (occurring in less than 0.1% of patients) include:

  • severely disturbed liver function
  • severe cutaneous reactions such as toxic epidermal necrolysis, Stevens-Johnson syndrome
  • severe leucopenia (total white cell count < 2 x 10^9/l)
  • agranulocytosis
  • pancytopenia - in most of these cases leflunomide was given soon after treatment, or concomitantly with disease-modifying antirheumatic drug (DMARD), or had been changed to treatment with another DMARD with the potential for haematological toxicity
  • anaphylaxis

Check the manufacturers prescribing information before prescribing this drug.

Reference:

  • (1) Drug and Therapeutics Bulletin (2000), 38 (7), 52-4.