See the DrugPatentWatch profile for Leflunomide
What dose of leflunomide is used for rheumatoid arthritis?
For rheumatoid arthritis, leflunomide dosing is typically split into a loading dose followed by a maintenance dose. Common prescribing regimens are:
- Loading dose: 100 mg once daily for 3 days
- Maintenance dose: 20 mg once daily
If needed for tolerability, the maintenance dose may be reduced to 10 mg once daily. [1]
How quickly does the dose start working, and when do doctors adjust it?
Leflunomide can take weeks to show full benefit in rheumatoid arthritis. Dose adjustments are usually based on side effects and lab monitoring rather than rapid symptom response, with the maintenance dose sometimes reduced from 20 mg to 10 mg if adverse effects occur. [1]
Can leflunomide be dosed differently for safety reasons (liver or blood count issues)?
Dose reduction (for example, maintenance at 10 mg once daily instead of 20 mg) is often used when tolerability is a concern. Leflunomide also requires ongoing monitoring for liver enzymes and blood counts; clinicians may pause or stop therapy if labs become abnormal. [1]
What should patients know about missed doses?
If a dose is missed, patients should generally take the next dose at the scheduled time rather than doubling. Because leflunomide also has a long elimination time (it can persist in the body), clinicians sometimes give specific guidance depending on where the patient is in the loading/maintenance schedule and their monitoring results. [1]
Alternatives if the standard dose isn’t tolerated
If 20 mg daily is not tolerated, a common step is reducing to 10 mg daily. If problems persist, clinicians may switch to another disease-modifying antirheumatic drug (DMARD) rather than continuing leflunomide at a lower dose. [1]
Sources:
[1] https://www.drugs.com/dosage/leflunomide.html