. Dental materia medica, therapeutics and prescription writing. uble in parts of water. Codeinse Sulphas, soluble in 30 parts of water. The average dose ofeach is gr. | ( gm.) PLATE XVIII. CATHAKTICS. Cushny classifies cathartics into three groups: 1. Mild aperients, the castor oil group. 2. The anthracene purgatives. 3. The jalap and colocynth group. These correspond largely to groups A, B, and D asgiven below. The diagrams are intended to show thedifferent ways in which cathartics may act. It is not possible to classify strictly, as the action ofsome is too extensive to be limited to
. Dental materia medica, therapeutics and prescription writing. uble in parts of water. Codeinse Sulphas, soluble in 30 parts of water. The average dose ofeach is gr. | ( gm.) PLATE XVIII. CATHAKTICS. Cushny classifies cathartics into three groups: 1. Mild aperients, the castor oil group. 2. The anthracene purgatives. 3. The jalap and colocynth group. These correspond largely to groups A, B, and D asgiven below. The diagrams are intended to show thedifferent ways in which cathartics may act. It is not possible to classify strictly, as the action ofsome is too extensive to be limited to one group. The numbers indicate the diagrams that representwhat is believed to be the most prominent action incase of each drug, not always the complete action. [For preparations and doses, see Index of Drugs.] Group A. LAXATIVES. (1) Fruits, Sugar. Sulphur. Purges in small doses. Glycerin (by enema). (2) Geoup B. PURGES. , Aloe. (1) Mercurials. (4)Oleum Ricini. (4)Rhamnus Frangula. (1)Rhamnus Purshiana. (1) Group C. HYDRAGOGUES. Citras. (3). Phenolphthalein. (4)Rheum. (1)Magnesia. (3)Senna. (1) (4) Elaterinum. (4) Magnesii Sulphas. (3^ Jalapa. (■1) Potassii Bitartras. (3) Senna. (1) Potassii et Sodii Tartras • (3) Sodii Phosphas. (3) Sodii Sulpiias. (3) Group D. DRASTICS. Coloeynthis. (5) Olcimi Tiglii. (5) Elaterinum. (3) (4) Podophyllum. (0) Jalapa. (3) (4) Scammoniuni. (5) Cambogia. (5) 1. Motility of large intestine stimulated. 2. Motility of rectumstimulated. The red color shows the site of action, and indicatesstimulation of motility or secretion.
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