You should at the very minimum take it for 3 days I feel. For a Tapeworm I was told to take it 600mg x 3/day for 3 days. Then wait for the full moon. Considering how safe I feel it is then you could go up. The thing with the prazi though that I think really needs to be considered is how healthy an immune system you have when you take it. It does something with calcium ion channels. Not sure what it does but it presents a target for the immune system to attack the worm. I have been having good luck with organic sauerkraut with just helping my immune system along. So, the immune system component needs to be included in there. I think that is a big piece.
David