

But sometimes playing with your health is a way to figure out what things work for you and what doesn’t right? I suppose the reason specific medication or herbs are being properly tested with the scientific method is because some researcher decided to ingest it or accidentally touched it and experienced the effects. Then decided to study it properly and ask people to do the same.
I’ve also found that some things that have well know effects, like coffee. Don’t work for me at all or have the opposite effect. So you always have to test it someway on yourself, even after checking the scientific consensus.

Yeah, everything depends on the plant and mostly the dose. Both examples you give are apparently safe to use in small amounts as a herb for flavouring food or drinks. (from wikipedia) So I suppose even for those plants with know strong effects, just eating a leaf wont do much.