If you buy pre-made herbal tea blends (usually have names like Bedtime, Calm, etc) check the ingredients. I just saw a Nighttime blend that had St. Johns Wort in it, which can be dangerous when mixed with some medications. Talk to you doctor what herbs you should avoid. (Especially when you want to ingest st. Johns wort or mugwort)
A simple hint to remember is just because its in a food store, doesn’t mean its safe.
St. John’s Wort shouldn’t be taken with antidepressants as well as many anti-anxiety meds (such as Xanax)! For a full list see below:
signal boost for safety
Per wikipedia:
St. John’s wort can interfere with the effects of many prescription medicines, including birth control pills, cyclosporine, digoxin, HIV drugs, cancer medications including irinotecan, and warfarin.[15] Combining both St John’s wort and antidepressants could lead to increased serotonin levels causing serotonin syndrome.[29] It should not be taken with the heart medication, ranolazine.[30]
Combining estrogen containing oral contraceptives with St John’s wort
can lead to decreased efficacy of the contraceptive and eventually
unplanned pregnancies.[31]