There doesn't seem to be much on Kudzu in these forums, and I was hoping to try and canvass some experiences and opinions. It's a herb which has been much used in TCM to deal with alcoholism and related problems (cravings, hangovers etc) - allopathic research seem to suggest that it may be because Kudzu can interfere with blood ethanol concentration that it reduces the desire to drink; other evidence indicates that it may also affect neurotransmitter levels. In TCM it is also used as a sedative and seemingly as an aphrodisiac, which might be linked to inhibited absorbtion of dopamine and/or serotonin. Others seem to feel it has a stimulating quality; this has been my experience of it. A point of concern is possible estrogenic activity - phytoestrogens in the plant can bind to receptors in the body and mimic the effects of estrogen and therefore it can reduce the effectiveness of certain kinds of birth control. On the other hand this plant has been suggested as a possible, natural alternative to normal methods of hormone replacement in post-menopausel women.
I have found the plant useful as a means for reducing cravings, not just for alcohol but for tobacco and sugar as well. As mentioned, it does seem to have a stimulating effect rather than the traditionally acknowledged sedating one, so there is a possibility that it is elevating norepinephrine through it's mechanism of action. The estrogenic effects are a worry though - does this plant seem to be an anti-androgen and would it have any seriously detrimental effects on testosterone levels?