I have had following symptoms last 3 days, sore throat first day, very fatigued, sleep all day, and weakness, 72 years old, no fever, blood pressure normal, joints very achy. I have noticed a more rapid heart rate last several days and am just wondering if Ester C or Sambucal could be causing either of these. On no prescribed medications. Medical status good except for fibromyalgia and osteoporosis.