What Enzyme product do you recommend?

Many thanks truehawk! Your info truly help me.
May I also ask your advice on enzyme product? I do some research on the internet. The products vary widely. Different source, plant like papaya and pineapple, animal like pig, and the product from national enzyme company make from fungal. And all those different unit (FCC, GDU, USP, etc.), quantities and prices. and chewable, tablet, capsule. I assume chewable tab you can melt it in the mouth, but I can also open the capsule and melt the powder, right?

I greatly appreciate your help!
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