Usually synthetic forms of any molecule are dangerous or have side effects the natural form doesn't because both the left and right-hand mirror forms of the mol

Usually synthetic forms of any molecule are dangerous or have side effects the natural form doesn't because both the left and right-hand mirror forms of the molecule are present, in equal quantities, in the synthetic product. It's only recently that we've been able to separate and discard one form to create synthetics that are of only one-handedness. A new, better zyrtec (drug for allergies) that's come on the market in the last couple of years is one example. https://www.famousscientists.org/two-centuries-of-right-and-left-handed-molecules/ https://www.famousscientists.org/two-centuries-of-right-and-... This is why synthetic perfumes are so extraordinarily dangerous for people with asthma, and cause several times as many deaths each year in Isreal as terrorism does, but natural scents are almost always fine. (It is possible to have dangerous allergic reactions to natural scents, too, causing severe edema and death, but this is far more rare.) Only tobacco is close to the same level of risk for asthmatics. Of course, other forms of contamination are also possible, not to mention that other chemicals in the natural plant may be modifying the effect or compensating for side effects.