Extra fibre is good to make sure the bowels are moving at least once a day to get rid of the toxins. If taking psyllium make sure you take it at a different time of day than the humaworm eg take it at noon and bedtime if taking the Humaworm at breakfast and supper. Drinking lots of water is very important in removing the toxins. For the most part we haven't had any bad times taking Humaworm. It isn't painful and unless you poke around you may not see much. Read the forums http://curezone.com/forums/s.asp?f=762&c=0&ob=d&m=humaworm
These are questions answered by RG the retired owner of the company (it is now run by his daughter who is a Naturopath Dr). Lots of great info.
Good luck. You will be happy with the results. As you will see in the forums alot of people need to do more thatn 1 cleanse to get totally rid of parasites.