Brief Summary: The main aim of the study is to assess whether Rhodiola rosea in the potency C 1-4 nitites more characteristic homeopathic symptoms during proving after three days upto one week, compared to a placebo in Hypertensive and Anxiety/ Depression prone volunteers. Secondary aims are to develop and to test a qualitative analysis methodology on which to base a definition for drug-specific (characteristic) symptoms and to compile a profile of characteristic homeopathic proving symptoms of the drug being trialed for therapeutic purposes. This study protocol adapts the traditional homeopathic drug proving methodology to a modern clinical trial design.