This section is from the book "Practical Materia Medica And Prescription Writing", by Oscar W. Bethea. Also available from Amazon: Practical Materia Medica and Prescription Writing.
Latin, Collodium (Gen., Collodii)
Eng., Collodion. Pyroxylin, 40 Gm.; Ether, 750 mils; Alcohol, 250 mils.
This is a liquid preparation, intended for external use, having for its base a solution of pyroxylin or gun-cotton, in a mixture of ether and alcohol.
Official Preparations.
See Cantharis.
Eng., Flexible Collodion. Collodion, 950 Gm.; Camphor, 20 Gm.; Castor Oil, 30 Gm.
As a protective dressing for wounds and as a vehicle for the administration of active agents, as in the. treatment of clavus and various skin diseases.
They are used locally either alone or with other agents.
In the treatment of clavus:
or | |||
Acidi Salicylici......... | gr. xxx | 2 | 0 |
Ext. Cannabis............ | gr. x | 6 | |
Collodii Flex............. | .q. s. | 15 | 0 |
M.
Apply twice daily.
Many prescribers add about 25 per cent. of Oleum Ricini to collodion to render it more flexible and to prevent too rapid evaporation.
In the treatment of psoriasis:
or | |||
Chrysarobini.......... | 3j | 4 | 0 |
Acidi Salicylici............... | gr. xx | 1 | 3 |
Aethens................. | f3j | 4 | 0 |
Olei Ricini................ | x | 6 | |
Collodii..................... | .q. s. | 30 | 0 |
M.
Paint on affected parts.
 
Continue to: