- On stable doses for at least 30 days before receiving study drug of at least one, but not more than two, of the following disease-modifying antirheumatic drugs (DMARDs): hydroxychloroquine, leflunomide, methotrexate (leflunomide-methotrexate combination is unacceptable), or sulfasalazine. If being treated with nonsteroidal anti-inflammatory drugs (NSAIDs) or low-dose prednisone (≤ 10 mg/day), must be on stable regimen for at least 14 days before receiving study drug