Common or Purging Buckthorn. Nat. Ord. Rhamneae. Linn. Syst. Pentandria Monogynia. Hab. various parts of Europe.

Med. Prop. and Action. Hydragogue cathartic, in doses of gr. xx. of the recent fruit or berries, gr. lx. of the dried fruit, or fl. oz. ss. of the expressed juice (Succus Rhamni). Buckthorn is best given in the form of syrup (Syr. Rhamni, Pharm. Lond. 1861), in doses of fl. oz. ss. - fl. oz. j. Its operation is brisk and sometimes severe, occasioning griping, nausea, vomiting, dryness of the mouth and throat, and leaving a thirst of long duration It should always be given in conjunction with carminatives. The syrup is often given to children in doses of fl. drm. ss - fl. drs. ij.

Therapeutic Uses. It was formerly highly esteemed in Rheu-matic, Gouty, and Dropsical Affections, but it has no advantage over other purgatives, is more offensive, and operates more severely. It is now rarely employed, excepting in domestic practice.