Typical usage is 1 teaspoon 3x daily for 30 days (2, 8oz bottles will provide that much). I suggest all doses on an empty stomach, or 2 on an empty stomach and one mixed with the IF#2.
For known or stubborn infestations, I would make it 1 Tablespoon 3x daily for 6 days with the 7th day spent 'flushing' of the intestinal tract - with extra IF#1, or something like Smooth Move tea, Senna tea or a quart+ of prune juice. Use the 1 teaspoon 3x daily the other two weeks.
The Liver tincture has Wormwood & fennel & garlic (all anti- parasite herbs), but it's definitely "not enough" to rid oneself of an infestation.