Herbal tea ingredients, especially ginger, may have an irritating effect on the stomach in some people. Anyone suffering from stomach ulcers, acid reflux , or other gastrointestinal issues should consult a doctor before consuming this drink regularly. If you are pregnant, breastfeeding or taking medication, it is best not to drink this type of herbal tea. If you have diabetes or high blood sugar, it is advisable to avoid adding honey or contact your doctor.