Medication Interaction Warning Edit:

Liquorice, Dandelion, Bishop’s Weed and Chrysanthemum can impact efficacy and safety of a LOT more medications.

The liver impact they have is because of the same CYP3A4 interaction is the GRAPEFRUIT WARNING. Not medical advice, but if you’ve been warned by a prescriber, pharmacist, or bottle not to have grapefruit (pomelo, bitter orange, certain other fruits), maybe don’t have those herbs until you talk to someone knowledgable.

https://en.wikipedia.org/wiki/Grapefruit%E2%80%93drug_interactions

@NyxMir inhibition of CYP3A4 is gonna wreak havoc on the metabolism of most meds (it's one of the main enzymes involved; inhibiting it can result in increased blood levels of most meds, which, depending on what med it is, might or might not cause issues (some meds are active by themselves, for which inhibition of CYP3A4 might increase the effect thereof, and some are prodrugs, meaning only their metabolites are active, and for those, the effect might decrease/slow down))

Depending on how much the tea inhibits CYP3A4 it might be quite dangerous combined with certain meds.