welcome to jewcy anita.  

I was looking for charcol pills one night [highly effective for stomach achs that feel like you have a bag of air stuck in you tummy- but is not gas or indigestions. Actually, it allergy symptoms to wheat which i heard most people are allergic to] but they dont sell them at your average pharmacy. anyways, when I talked to the chick who worked there she asked me two questions:

Do you smoke? [I had just bummed one] 

Do you drink coffee? [ i had one the day before]  

If you answer yes to these questions, basically herbal drugs will not be effective for you.  I guess you have to be relatively unpolluted- or at lest living a particularly healthy lifestyle (no meat or toxic substances) before you can even feel the difference of a homeopathic/herbal/plant drug [even if its not FDA approved- its still a drug, which makes many herbal medicines  deceptivly dangerous when taken with other drugs].

The other thing I wanted to comment about is that hallucinogenic plants/drugs which have been taken by indiginous societies for centuries were never taken just to trip, alone that is. For example, my preuvian anthropoligist friend was living with some of the indians down south there and he took ayahuasca with them one night. We are talking about a middle-age, virginal-catholic mama's boy, but anyways he talked to a tree that told him, "you gotta be like us, rooted in the earth's soil but open to the stars (the universe)".

  tribes who take ayahuasca don't do it for recreation, they actually do it to enrich their community, to strenghthen their ties. All the men who take it ride on the trunk of a fallen tree like a canoe and they only get off it to barf (it makes you really sick and it can be really scary experience, as you can imagine if you were being poisoned). 

 anyways, if you are into plant medicines you must check out flower medicines too. I think this is a practice that originated from medieval, lobatamist priests in europe who were contemporaries of witches (who they burned because of competition)! (you know, like the priest who gives Juliet the sleeping/pretend death vial in the original romeo and juliet movies).   Here is a site of  Linda Cohen who sells flower essences: luminous lotus  (i met her once and she is for sure psychic because every question that I had, when she was introducing me to flower essences, everything that went through my mind she then answered without me verbally asking her)