My doctor is trying this med for 2 weeks, YET the warning /side effects are exactly what I am having already with Lisinopril. extreme tiredness, occasional nausea, occasional light-headness. Should I take this med (bystolic)? I am white/female AGE 69, with no history of heart disease at this time, high BP w/o Lisinopril (150 over 90), low blood sugar controlled with diet/exercise & Cinnamon caps (1000 mg). Otherwise with some muscle pain, joint pain. That is all.