UVA URSI — BEARBERRY 307 



Preparations and Doses. 



Fluidextractum Buchu. H. gj — iy, 30. — 60. D. IT], v — 



XXX ; 0.3 — 2.0. 

 Powdered leaves, same as fluidextract. 



Action and Uses. Buchu is a feeble diuretic and stimulant to 

 the geuito-uriuary tract. The volatile oil is largely eliminated by the 

 kidneys, causing diuresis, and imparting to the urine a peculiar odor 

 and some antiseptic properties. Overdoses produce about the same 

 symptoms as overdoses of other volatile oils. 



Buchu is useful in the less severe cases of subacute and chronic 

 cystitis and is particularly valuable in chronic irritability of the 

 bladder shown by a frequent desire to urinate. It is well to pre- 

 scribe it with an alkali. 



Irritable Bladder. Dog. 



IJ riuidextraeti Buchu 3 vj 



Potassii Citratis 3 iv 



Spiritus ^theris Nitrosi S j 



Aquae q. s ad. 5 vj 



Misce et fiat solutio. 



Sig. Teaspoon or tablespoonful, according to size of animal, every 

 three hours. 



UVA URSI 



Synonym. Bearberry 



Parts Used. The leaves of Arctostaphylos TJva-ursi, an ever- 

 green shrub, native to northern continents. It contains two active 

 principles (glucosides ) , arbutin and ericolin, besides tannic acid and 

 an inert resin (urson). Its action is due largely to its glucoside 

 arbutin. 



Dose. 



Fluidextracti Uvw Vrsi. H. gss — ij ; 15. — 60, D. 3ss — iv; 



2.0—8.0. 

 Arbutin. H. not used. D. grs. ij — iij ; 0.13 — 0.3. 



LTva Ursi has the typical action of other members of the group, 

 diuretic, stimulant to genito-urinary tract, and renders the urine 

 more or less antiseptic. It is eliminated partly unchanged and 

 partly as hydroquinon. Both the crude drug and arbutin render the 

 urine dark green, probably on account of the oxidation of the hydro- 

 quinon. As it contains tannic acid it is an astringent and for the 

 same reason is incompatible with the spirits of nitrons ether. 



Uses. It may be employed in the same conditions for which 

 buchu is recommended, but is generally considered inferior to it. 



