Butterbur (Petasites hybridus) References

Brattstrom A. A newly developed extract (Ze 339) from butterbur (Petasites hybridus L.) is clinically efficient in allergic rhinitis (hay fever). Phytomedicine 2003;10 Suppl 4:50-52.
Danesch U, Rittinghausen R. Safety of a patented special... read more

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