Take a bunch of the freshest organic cilantro leaves. If you can grow your own is best. Apartment dwellers can grow easily in pot on balcony or window sill. Rinse well then chop up, stems and all.
Then place the chopped cilantro in 4 cups boiling water, bring back to boil, shut off flame and let sit for 10 minutes. Then strain. Drink at room temperature, never cold through out the day.
You will feel and see a difference immediately.