Cramp bark (Viburnum opulus) References
Nicholson JA, Darby TD, Jarboe CH. Viopudial, a hypotensive and smooth muscle antispasmodic from Viburnum opulus. Proc.Soc.Exp Biol.Med. 1972;140(2):457-461.
Ovodova RG, Golovchenko VV, Popov SV, et al. [The isolation, preliminary study of...
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