Hello, Doctor My mom is an SLE patient diagniosed in the year 2008 and she is under medication concerned to SLE since then but frequently, she keeps getting fever and doctor gives her IV injections for fever which reduces my mom s fever. today also she got fever, and she has been given MAGNEX 1.5 CALPOL LEON 750 she has been given one dose of MAGNEX IV, CALPOL and LEON tabs till now teperature has become normal after taking MAGNEX and Calpol but she is feeling weakness after fever came down My Qurery is - may I know the reason for weakness after fever coming down also?