Herbs can cause migraines and acid reflux. The Wormwood in the herbs is harsh and can also cause sore throat. If yours are in the colon only i wldnt risk the scattering. You wld need to hit the colon ones hard to kill them or else they cld scatter. It is a good idea to keep the colon cleansed and functioning when putting meds n herbs in the gut. You really need the colon working to expell the bugs and not feel toxic. Did u see what type of worm u are dealing with in the tolite while on the herbs? Some types are harder then others to wipe out. If u had scattering you would surely know it.