Tea drinkers read this!!!
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.