Question: is this a 2) strong advice, 1) weak advice 0) no advice?

Recently Linde and Mulrow (2000) have suggested to compare the antidepressant efficacy of Hypericum extract with standard antidepressants in well defined groups of patients over longer periods of observation as well as to study different extracts and doses (for a discussion of therapeutic alternatives to Hypericum extract in long-term prophylaxis of depression, see Winkler et al, 2002). 
user
This is no advice
assistant