Stimulants Separating (extraction) of ephedrine from caffeine

[plumbus-nine]

I found some branded supplements (named China White and Asia Black, don't know if these are sold in the states too and how trustworthy they are but they seem to sell a lot of) on the local market which seemingly contain ephedra but also 250mg of caffeine and I think this is too much for me as somebody pretty sensitive to it. What I'm looking for is to get the ephedrine but seems there are no products with it as a single ingredient.

So I'm wondering whether one could extract either the ephedrine or then the caffeine with relatively simple methods?