Original 1938 Dental trade magazine vintage ad for the PETROLAGAR LABORATORIES, INC.  Main office and plant were located at 8134 McCormick Boulevard, Chicago, IL. 

Manufacturers of Constipation Medication for Bowel Movement. 

'Diet.' 

When the impulse to defecate is lessened due to improper diet or lack of discipline, the fecal matter usually becomes dehydrated and impacted in the bowel.  To simplify the problem of bowel regularity, Petrolagar may be prescribed to advantage, as it assists in the regulation of bowel movement. Petrolagar mixes intimately with the bulk of the stool to induce a soft, easy passed mass. By reason of its pleasant taste and mild but thorough action, Petrolagar is agreeable to patients of all ages. Five types of Petrolagar provide a choice of laxative medications suitable for the individual patient.

Has product image, illustration, description and application to provide product details.

Unbound from a rare 1938 American Dental Journal magazine, this unique old one-page dentist advertisement would display beautifully matted and framed. Nice graphics. A fabulous addition to your retro dental industry library.