Phyllosan: a doctor telling a couple to take Phyllosan to compensate for the stress of modern life. Halftone and letterpress, 1937.

The text explains that modern conditions cause stress, anxiety, and nervous and mental strain, which lead to "devitalization". Revitalization is accomplished by taking Phyllosan brand of chlorophyll tablets. Testimonials are provided by Prof E. Buergi MD, University of Berne, and others. The doctor tells the couple this, wagging his finger for emphasis