Ok, I found this while searching for star anise as my mother(who is not chinese and I really dont know where she found out this concotion from, I think my aunt from cali is the source) touts making a tea of star anise and thyme for when any of us kids look like we're sick. You boil water, add tablespoon(or 2 if making for 2 people) thyme and star anise(whole star not ground or anything) and heat for 3 minutes. Fish out star anise(she said it's toxic for you), drink tea. Fevers should be reduced, ect. I use it as preventive up here at college from catching anything serious, and so far nothing has come of it.
Note: Dont buy star anise from health food stores unless you have to. They charge ridiculous amounts for a small package of 20 stars maybe. You can go to a chinese market and get a large large bag for about the same price.
Anyways, any who seem to have really bad reactions to the vaccine might consider using this!