I've been studying and taking veggie based enzymes for two years now.
Best way to optimize your energy and keep your vital immune system super strong is to eat mostly or all RAW foods. Avoid processed sugars and white flour as these will cause problems and lower your immune resistance.
The highest quality Enzymes I've been able to find are these, which I take daily:
Enzymedica
I have no affiliations with them but can testify to their quality and health benefits.
