Preparing extract fractions of Hypericum perforatum, for treatment of depression

摘要

Preparation of extract fractions (A) from Hypericum perforatum comprises: (i) conventional preparation of an aqueous-alcoholic extract ; (ii) evaporating this extract to the required degree of concentration; (iii) separating the precipitate formed in step (ii) from the supernatant; and (iv) repeating, on the supernatant, steps (ii) and (iii), at least once. An Independent claim is included for (A), produced using the above method.