Hi, It would be good for all of us to do at least one 30 day parasite cleanse a year.
I reccomend Humaworm or MH's Barefoot Herbalist Dewormer.
While these are herbal and will not wipe out your good bacteria from your body as would chemical pharmacueticals, the cleansing effect of any colon cleansing involved might- so you should take some natural probiotics after the cleanse is over.
A parasite cleanse is worth it for maintenance. Many people are surprised to see what was living in them quietly-- robbing their B Vitamins, etc. from thier digestive tract.