gongtau is in fact the studies of medicine and herbs . back in old days people use "magic mushroom " as part of gongtau ingredients ( after consume the mushroom , you got extremely strong visual hallucinations , thats why accidents occur ) .ever wonder why some people tell you dont anyhow eat stranger food ..later kena gongtau ? magic mushroom is just one of the ingredients for gongtau ..there are many herbs that have the same effect .and some frogs do produce some kind of toxic which able to make human being sick for no reason .
some so-called gongtau master using ""A" herbs mix with "b" herbs = mild poison .and by using certain herbs they know how to cure " so-called gongtau ..
gongtau will never works if you give those gongtau master your enemies hair , photo or fingernails ..those are add on effect for the gongtau master to make gongtau more mystery ..
ps: becareful when others offer you food ...since the truth is out ...