What medicine is used to treat lupus?

Many. There are many therapies for lupus. First of all it depends on what ype of lupus one has and how bad it is. Some patients need no treatment. We still use medications that have been around for years which include drugs like advil, (ibuprofen) Prednisone and drugs called dmards such as Plaquenil and methotrexate. There are a host of other medications also. Talk with your md.
Lupus. There is no 'best' medicine that can be recommended without knowing the status of your lupus. This is one of those questions that is impossible to answer effectively with no information. Rheumatologists evaluate patients with lupus and based upon what symptoms they are having and the disease status, they make recommendations about treatment plans..
Meds, prevention. All people with systemic lupus should take Plaquenil (hydroxychloroquine) unless allergic. It helps control flares & prevent organ damage. Also nsaids help pain. Immune suppression drugs may be needed. Preventing infection (vaccines, hand-washing, etc.) and preventing heart disease are important. A rheumatologist is helpful.