Copaiba, Miscible

Prep. From balsam of copaiba (pure and transparent), mixed with half its volume of solution of pota a made of double the strength ordered in the B. P. Obs. As different samples of copaiba often require slightly different quantities of the solution of pota a, it is best to mix the two gradually and cautiously together. Should the mixture be opaque, a little more of one or other of the ingredients, as the case may be, will render it clear. No heat must be used. This article is miscible with water, with which it forms a kind of milk; and from containing all the volatile oil of the copaiba, is a very valuable preparation. Its activity is considered equal to that of the balsam itself, and it is given in similar doses.