Parke Davis collectible ink blotter from the 1940s advertising Siblin. The advertisement states that "each rounded teaspoonful contains a specially prepared water-absorbent material obtained from plantago, 4.5 grams, plus Crysto-Vibex ... 50 international units." It is indicated for treatment of atonic or spastic constipation and comes in 4 oz and 1 lb tins. There is an illustration that describes the result of mixing siblin with water as "a soft smooth gelatinous mass" as well as an illustration of a large intestine. Dosage is given. The date "10-40" is written at the top. The Parke Davis identifier is bl-60-2.
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7 X 3.5 inches
Parke, Davis & Company, “Siblin,” American Institute of the History of Pharmacy Digital Collection, accessed August 13, 2022, https://aihp.omeka.net/items/show/559.