The product Parastroy contains Bromelain and Papain. These come from fresh pineapples and papayas. Both of these enzymes digest proteins. Perhaps just adding some fresh fruit to your diet will be enough. I took enzymes on my first cleanse because my Naturopath recommended it. However, it may not be necessary, especially with Humaworm's fresh herbs. Fresh juiced fruits and whole fruits contain plenty of natural enzymes and I would think they would be better than adding more supplements.
I wanted to ask Humaworm if he felt the raw pineapple and raw pumpkin seed diet had any merit in ridding the body of parasites. Bromelain is also anti-inflammatory, but I don't know if that would affect the cleanse or not.