What;s the best pain medicine for lupus patients?

Acetaminophen NSAIDS. For symptom relief of pain you can use Acetaminophen or NSAIDs like Ibuprofen or o Naprooxen or Cox 2 Celebrex Along wih Antimalarials (Hydroxychlroquin) and low dose steroids.
None. lupus needs to be controlled with meds that treat the underlying inflammatory process, not with pain meds.