I feel fine! After a week into my first HW cleanse and an on going bout of Giardia i think HW kicked in! No side effects, except a feeling of a little dye off now and then, which makes me a bit moody but i think it kills that little critters. Wow i feel better day by day. And best of it all my toilet dash is getting back to normal. :) This after traveling for years in India and South Asia and having had all sort of critters in the past!