This herb had fallen out of favor and its wonders and abilities knowledge lost for many years until recently. Scientists are finding that this herb has real cures and possibilities that need to be put into action (again). The Chinese still find great uses for it and their primary one is to treat heat stroke and liver ailments.
A tea made from Self Heal has a reminiscent flavor of Rosemary and that is due to the fact that it contains very high rosmarinic acid which has been very well studied and found to contain many antioxidants. And because it is a member of the mint family it also have a cooling effect.
For immune system health it has been proven to reduce an excessive response like what we see with seasonal allergies or chronic inflammation which also works as a prevention of illnesses. It is mostly used for wounds, sore throats high blood pressure, burns, insect bites, herpes, cancer and allergy relief, as a poultice used to pull out infection from wounds or abscesses. And that seems like a lot of possibilities, but it actually does work for all of this according to the studies which have been preformed. It has also been know to staunch the flow of blood much as Yarrow does.