I get good results from diatomaceous earth myself though. Supposed to be very slice-and-dice good against parasites, and it really gives me an energy boost! (see data on silica, apperantly helps seretonin-receptors, bone health and thyroid hormone production)
Sometimes have to nibble a bit of charcoal after drinking a teaspoonful of DE, but getting detox/kickback.. well, you know what you're using has an effect, by how you feel after it. :)