Hi Andres,
No, litotherapy is not the same as oligotherapy. The latter is a method of therapy using homeopathic potencies of the trace elements (called oligo-elements) found in the body. The approach here is to bring equilibrium back to a deranged metabolism since the trace elements are essential catalysts in enzymatic and metabolic pathways. I don`t use this therapy either.
I sometimes prescribe Gemmo/Gemmae therapy which is a method of drainage in which glycerine macerates are prepared in 1x or 2x potencies from fresh buds of certain trees or vegetable tissues in the process of growing and dividing. This form of therapy stimulates simular processes in the various organs of the body. I think that gemmotherapy is still unknown in most countries.
(Drainage remedies promote the excretory functions of a particular organ or organ system.)
Also see :
http://oaks.nvg.org/re6ra8.html (Gems and Gem remedies etc.)
http://oaks.nvg.org/suin.html
Wim