<s>[INST] does the combination of black elderberry, ginger root, echinacea root, andrographis paniculate leaf, raise ones heart rate?  I am on no medications but took this Quck Defense herb with above ingredients for flu like and cold symptoms I'm feeling.  i got up to an Extremely low blood sugar reading this AM and thought tht might also be to these herbs?? [/INST] Herbs are good in isolation but not in combination .So before taking any herbs please read the details of both the effects and side effects before ingesting them.There may be cumulative toxicity when you take herbs in combination.What you have to remember is not all herbs are created equally.There is lot of poor quality hebs in the market and they create more harm than good.So use herbs wisely after making sure they are of excellent qulity and after checking their effects as well as side effects .hope this helps </s>