Okay, I'll share my method of usage here:
* Take around 10 to 12,5 grams leaves for 1 liter water, this dose is strong but doesn't saturate the water completely.
* Boil the water, but don't add the leaves until after boiling. You'll lose aromatic compounds in boiling water, just as with mint.
* Leave it alone for around 24 to 36 hours. After 48 hours it will start get sour, so better to store it cold.
What you get is a dark green/ brown beverage that tastes very nice. Drink 2 liters at once and you'll be going to the bathroom very often, haha.
Anyways, I tried it for enema. That's not my hobby, but neccesity caused to overcome the repulsion for these kind of actions. And in fact it is a good thing to clean up the less cleanly parts of the body.
* For enema use the same recipe.
Just as it is healthy for the soft tissues in the mouth, so it is for the tissues down below. There were absolutely no signs of toxicity when I did it. It felt great afterward. Better than coffee for sure.