I'm on Humaworm day 20 with strongyloides, candida, pseudomonas and who knows what else. I suppose it depends on the sort of parasites you have and how heavy the infestation is. I would say be prepared for sleep disturbances - I've just got through a week of insomnia, not being able to sleep until 5am. Now I can't seem to sleep enough.
I also went through a very angry patch - white hot rage. Just be reassured that it will pass!
That said, everyone on here seems to have had quite different reactions. Personally I've not seen any really dramatic effects yet but it's definitely doing something. My Acne is still the eyesore that it always was, unfortunately!