Dong quai is excellent at rebalancing hormones...the problem is that it is
not an excepted way to do it and there is no research in horses. Thus it
could be argued that it is not a substance to regulate estrus. Every
race's head veterinarian is different and some like alternatives and some
feel very threatened and won't allow it. The rule is vague esp. combined
with the rule on herbs in general.
Kim Henneman, DVM
Events