I Am A 73 Year Old Woman And Have Been

I am a 73 year old woman and have been taking glucosamine/chlondoitron 1500mg tablets /2 per day and recently added one turmeric tablet per day ... I have recently broken out with itchy red spots on arms legs and stomach area and wonder if I might be having a reaction to any of these pills? I also take a vitamin pill for hair skin and nails. I don't take any other mess and consider myself healthy apart from arthritic pains which has been helped with taking supplements