Aconitine as met with in commerce has been found to vary greatly in purity, and therefore in physiological effect. It is of the utmost importance that a definite strength should uniformly attach to so powerful a drug, and this is secured in the ‘Wellcome’ Brand product, which is free from pseudaconitine and japaconitine, and from the non-toxic aconine and benzaconine.
Atropine Cocaine
The alkaloid Atropine is, under this brand, issued free from hyoscine and hyoscyamine. Cocaine and its hydrochloride are prepared in a state of purity answering fully the most rigid tests.
Aloin, Crystal
Aloin (Crystal). This greatly improved product is barbaloin in well-defined crystals, and is free from resin.
Bismuth Salicylate
The bismuth salts have received much attention, a notable improvement being made in the quality of Bismuth Salicylate. It is well known that there has been a lack of uniformity in the composition of this article, and that not infrequently preparations have been sold under this name which have consisted merely of a mixture of salicylic acid with the oxide or some salt of bismuth. ‘Wellcome’ Brand Bismuth Salicylate is made from physiologically pure salicylic acid, and is uniform in composition.
Stable and soluble
The scale salt known as Bismuth and Ammonium Citrate is a very unsatisfactory preparation. Bismuth Citrate (Soluble), ‘Wellcome’ Brand, has the same therapeutic properties, but is much more stable in character. Being very freely soluble in water and yielding a bright solution, it is well adapted for the extemporaneous preparation of a solution corresponding to Solution of Bismuth and Ammonium Citrate, B.P., or for preparations in which the U.S.P. salt is used. Like the latter, which it is designed to supersede, it is not compatible with acid liquids.
Bismuth and Lithium Citrate (Soluble), ‘Wellcome’ Brand. This new combination, in the form of handsome colourless scales, is readily soluble in water. It is thus particularly convenient when the effects of both lithium and bismuth are desired, as in gouty dyspepsia.