From reading old newspapers, I have learned something about the North American diet in the 1920s and 1930s: people weren’t eating enough roughage, so they were having trouble with constipation. Here’s an example from the August 25, 1931 Toronto Daily Star:
It’s good, it’s very good! And, reassuringly, it acts only in the bowels, not in the stomach (or in the elbows).
A Google search yielded no references to Dr. Papillaud Laboratories, so I have no idea how long they were in existence. Dr. Papillaud and his wondrous pill appear to be lost to history.