The chief pharmacopoeial salts are: (1) Plumbi oxidum (lead oxide), litharge.
The pharmacopoeial preparations of this acid are a 2% solution, which is given in doses of from two to six minims, the tinctura chloroformi et morphinae cornposita, which contains a half-minim of this solution in each ten minims, and the aqua laurocerasi, which owes its virtues to the presence of this acid, and is of inconstant strength, besides being superfluous.
The pharmacopoeial mixture is best avoided, being almost uniquely nauseous.
The British pharmacopoeial preparations are (r) glycerinum acidi tannici; (2) suppositoria acidi tannici; (3) trochiscus acidi tannici.
The pharmacopoeial forms of iron are as follow :- Ferrum, annealed iron wire No.
The drug is largely employed as a counterirritant, the pharmacopoeial liniments being very useful applications.