How much parasite cleansing required before you can do LF?

Exaclty as above how much parasite cleansing do you need to do in order to take on Liver Flushing and when do you know you have cleansed yourself enough of parasites before liver flush? I have used a one month course of a parasite cleansing tablet but not sure of this enough for me to proceed with Liver Flush as I've heard its dangerous to do without doing parasite cleansing prior to it? Please advise.
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