A new law in the European Union aims to protect consumers from possible damaging side-effects of over-the-counter herbal medicines. For the first time, new regulations will allow only long-established and quality-controlled medicines to be sold.
Dr. Ramey notes: No such protection is offered to horse owners. Herbal products intended for use in horses are essentially totally unregulated, and the claims that may be made for them are essentially completely unsupported. That said, certain plants are essential for horses (e.g., hay).