Saline Waters: in morning before breakfast.
Senna: as confection, etc.
Senna: with Cascara Sagrada.
Soap: suppository in children.
Sodium Chlorate.
Sodium Phosphate.
Stillingia: 10 minims of fluid extract.
Strychnine: in atony of the walls.
Sulphates: in purgative natural waters, in small doses.
Sulphur: sometimes very useful as a good addition to compound licorice powder.