This is not the so-called Berbeerin from the Berberis Vulgaris, but a well-defined salt from the Nectandra Rodiaei. As found in commerce, it is in glittering scales of a brownish-yellow color, and when triturated forms a yellowish powder.
It exerts a specific action upon the uterus, but thus far it has been principally employed in cases of menorrhagia. In this case its influence is very marked, controlling the hemorrhage, and preventing its recurrence. As we have other remedies for the milder cases, its use might be confined to those in which there is profuse discharge at each menstrual period, and where they recur too frequently. The dose will be from two to three grains every three or four hours.