There’s a reason why many microbial cleansing formulas feature cloves, wormwood, and black walnut hull for killing parasites. They don’t require a doctor’s prescription, they're easily accessible, they don’t contain toxic synthetic chemicals found in prescription medications and they are less likely to produce any unwanted side effects. In addition, botanicals support the immune system, and they keep the intestinal flora in balance so that parasites are less likely to thrive.