Extractum Iridis, B.P.C. Extract of Iris.

Botanical name: 

Format explanation

Related entries: Blue Flag

Synonyms.—Iridin; Extractum Iridis Siccum.

Blue Flag Rhizome, in No. 60 powder 100.00 | 20 ounces
Calcium Phosphate, a sufficient quantity.
Alcohol (60 per cent.), a sufficient quantity.

Exhaust the drug by percolation with the alcohol, recover the alcohol by distillation, and evaporate the remaining liquid to dryness; reduce the residue to fine powder, add 5 per cent. of calcium phosphate, again dry, powder, and preserve in a well-stoppered bottle.
Dose.—½ to 2 decigrams (1 to 3 grains).

The British Pharmaceutical Codex, 1911, was published by direction of the Council of the Pharmaceutical Society of Great Britain.