Hello, my wife has Rheumatoid arthritis (RA) and her doctor prescribed Plaquenil (hydroxychloroquine) to be taken daily. Now she is taking methylsulfonylmethane (MSM) supplement additionally. I searched and checked online if there would be any interaction/side effects. Also she is breastfeeding our baby daugther and the doctor said that would be okay. Can someone advice if there will there be any interaction between these two? Thanks, much appreciated.