Viburnum opulus - Cramp Bark, High Cranberry, High-bush Cranberry
"CONSTITUENTS: -
PREPARATIONS: Fluid Extract High Cranberry. Dose: from ten to thirty minims.
Therapy: Given prior to labor it is a partus preparator of much value, but its action is limited largely to its antispasmodic influence upon erratic pains. It is given with much benefit in severe after-pains, in hysterical conditions, with convulsive phenomena, and in spasmodic dysmenorrhea. It is of advantage in that it prevents miscarriage., but to an extent greatly inferior to viburnum prunifolium, which agent, in fact, fully covers the field of operation of this agent, except in its anti-spasmodic influence.
(Finley Ellingwood: The American Materia Medica, Therapeutics and Pharmacognosy, 1915)"