I have my doubts about things like rescue remedy but sure other things work - after all, aspirin is a natural plant (tree) extract?
OK, the inexorable draw of this thread is too much: I'm like a moth and a flame
It's not that I think natural substances are ineffective: far from it. Aspirin is a good example (and my own pain reliever of choice). I use tea tree oil on minor cuts and alcohol as a recreational drug. If I felt depressed I would self-medicate with St John's Wort as a first step.
My frustration is that many people seem to believe that 'natural' equals more gentle and with no side effects. But other natural substances include cocaine, nicotine and arsenic. I could go on. If something has a therapeutic effect, it is likely to have side effects in susceptible individuals, whatever its provenance.
My other frustration is that there are too many charlatans out there preying on people's distrust of pharmaceutical companies. I'm no apologist for the latter, but primary benefits of modern pharmacology include isolation of active ingredients and standardisation of dosage.
And of course I am steadfast in my opposition to the purveyors of snake oil and magic - but you are sceptical too so I'll leave that there