- Types:
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aloes, bitter aloes
a purgative made from the leaves of aloe
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castor oil
a purgative extracted from the seed of the castor-oil plant; used in paint and varnish as well as medically
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Epsom salts
(used with a singular noun) hydrated magnesium sulfate used as a laxative
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laxative
a mild cathartic
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milk of magnesia
purgative consisting of a milky white liquid suspension of magnesium hydroxide; used as a laxative and (in smaller doses) as an antacid
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Rochelle powder, Seidlitz powder, Seidlitz powders
an effervescing salt containing sodium bicarbonate and Rochelle salt and tartaric acid; used as a cathartic
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phenolphthalein
a laxative used in many preparations under various trade names; also used as an acid-base indicator in titrations involving weak acids and strong bases because it is brilliant red at high alkalinity and colorless below pH 8
