Cannabis indica - as the drug is termed in the pharmacopoeias - may be given as an extract (dose 4-1 gr.) or tincture (dose 5-15 minims) .
The study of pharmacological actions was at first almost entirely confined to those of remedial agents, and especially to the remedies in the different national pharmacopoeias, but in many cases it has now been extended to substances which are not used for curative purposes.
Oxycedrus, from the Mediterranean district and Madeira, yields cedar-oil which is official in most of the European pharmacopoeias, but not in that of Britain.
It is highly important to observe that the official doses of the various pharmacopoeias may with safety be greatly exceeded in practice.
The former contained 55, or, according to some formulae, 72 ingredients, and occurs in all the dispensatories, from that of Corvus Valerius up to the pharmacopoeias of the 19th century; and aromatic preparations of opium are still used, under the name of Theriaka in Persia.