A single herb has potential for side effects because it may have a particular action on the whole body that isn’t desired. However, an herbal formula carefully designed by a well-trained practitioner rarely has side effects because its various influences on different body systems have been balanced by the other herbs and thus each body part receives a particular and desired effect.
The most common side effect from using herbal therapy is an upset stomach, which is easily remedied by taking the herbal formula with meals.
However, there is always a chance of an unwanted side effect, such as rash, nausea, vomiting, diarrhea and even shortness of breath. Please contact your physician and herbalist as soon as possible and immediately stop taking the medicine until cleared from your doctor.
It’s always better to be safe and err to the side of caution.