Monitoring
Before treatment
Before starting treatment with teriflunomide the following should be assessed:
• Blood pressure
• Alanine aminotransferase (ALT/SGPT)
• Complete blood cell count including differential white blood cell and platelet count.
During treatment
During treatment with teriflunomide the following should be monitored:
• Blood pressure
• Alanine aminotransferase (ALT/SGPT)
• Complete blood cell counts should be performed based on signs and symptoms (e.g. infections) during treatment.
Accelerated elimination procedure
Teriflunomide is eliminated slowly from the plasma. Without an accelerated elimination procedure, it takes an average of 8 months to reach plasma concentrations less than 0.02 mg/l, although due to individual variation in substance clearance it may take up to 2 years. An accelerated elimination procedure can be used at any time after discontinuation of teriflunomide (see section 4.6 and 5.2 for procedural details).
Hepatic effects
Elevations of liver enzymes have been observed in patients receiving teriflunomide (see section 4.8). These elevations occurred mostly within the first 6 months of treatment.
Liver enzymes should be assessed before initiation of teriflunomide therapy - every two weeks during the first 6 months of treatment, and every 8 weeks thereafter or as indicated by clinical signs and symptoms such as unexplained nausea, vomiting, abdominal pain, fatigue, anorexia, or jaundice and/or dark urine. For ALT (SGPT) elevations between 2- and 3-fold the upper limit of normal, monitoring must be performed weekly. Teriflunomide therapy should be discontinued if liver injury is suspected; consider discontinuing teriflunomide therapy if elevated liver enzymes (greater than 3-fold ULN) are confirmed. Patients with pre-existing liver disease may be at increased risk of developing elevated liver enzymes when taking teriflunomide and should be closely monitored for signals of liver disease.
The medicinal product should be used with caution in patients who consume substantial quantities of alcohol.
Since teriflunomide is highly protein bound and as the bindi |