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Does Teriflunomide Interact with Leflunomide And Diclofenac Sodium Gel?

Teriflunomide and Leflunomide And Diclofenac Sodium Gel have a unknown drug interaction according to U.S. FDA drug labeling data. 7 DRUG INTERACTIONS Following oral administration, leflunomide is metabolized to an active metabolite, teriflunomide, which is responsible for essentially all of leflunomide's in vivo activity. Drug interaction studies have been conducted with both leflunomide and with its active metabolite, teriflunomide, where the metabolite was directly administered to the test subjects. Concomitant use of leflunomide tablets and rifampin, a potent inducer of CYP and transporters, increased the plasma concentration of teriflunomide by 40%. Patients taking both medications should consult their healthcare provider before starting, stopping, or changing the dosage of either drug. This information is based on official FDA drug labeling sourced from OpenFDA and the NIH National Library of Medicine.

Severity
Unknown
Teriflunomide Class
Pyrimidine Synthesis Inhibitor
Management
Consult your pharmacist
Data Source
U.S. FDA via OpenFDA

What To Tell Your Doctor or Pharmacist

If you are taking Teriflunomide and your doctor is considering prescribing Leflunomide And Diclofenac Sodium Gel (or vice versa), make sure to:

  • Inform your doctor and pharmacist of all current medications, including over-the-counter drugs and supplements
  • Ask whether the benefits of combining these medications outweigh the risks for your specific situation
  • Ask what symptoms to watch for that would indicate the interaction is causing problems
  • Never stop or change either medication without first consulting your healthcare provider
💊 Teriflunomide(Aubagio)+💊 Leflunomide And Diclofenac Sodium Gel(Lefluniclo)

Severity & Interaction Details

ℹ️
unknown
Interaction documented — severity unclassified
The FDA label notes an interaction but the severity is not classified in our dataset.
Severity scale
MinorContra
On record
Yes
Drug A class
Pyrimidine Synthesis Inhibitor
Drug B class
—
Source
FDA drug label - leflunomide and diclofenac sodium gel

What this means in plain English

7 DRUG INTERACTIONS Following oral administration, leflunomide is metabolized to an active metabolite, teriflunomide, which is responsible for essentially all of leflunomide's in vivo activity. Drug interaction studies have been conducted with both leflunomide and with its active metabolite, teriflunomide, where the metabolite was directly administered to the test subjects. Concomitant use of leflunomide tablets and rifampin, a potent inducer of CYP and transporters, increased the plasma concentration of teriflunomide by 40%.

About Teriflunomide and Leflunomide And Diclofenac Sodium Gel

Teriflunomide is a Pyrimidine Synthesis Inhibitor. You may recognize them by the brand names Aubagio and Lefluniclo. Teriflunomide is taken by mouth, whereas Leflunomide And Diclofenac Sodium Gel is applied to the skin. Both Teriflunomide and Leflunomide And Diclofenac Sodium Gel carry an FDA boxed warning — the agency's most serious safety designation.

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Data integrity: Every interaction shown is extracted directly from official U.S. FDA drug labeling via openFDA and the U.S. National Library of Medicine (NIH) — no interactions are invented, inferred, or manually edited. Maintained by CheckDrugInteractions.com. See our methodology or report a correction at support@checkdruginteractions.com.

Data sourced from U.S. FDA drug labeling via openFDA and the NIH National Library of Medicine, supplemented with a small number of well-established interactions from curated clinical references. For informational purposes only. Always consult your pharmacist or physician.