In the 1930s French pharmaceutical company, Laboratoires Lobica, introduced the drug Sérénol. Sérénol was developed to treat ‘Neuro-Vegetative Imbalance’ – symptoms include: anxiety, emotionalism, nervous dyspepsia, etc.. From 1935-1940 Lobica ran a print advertising campaign to promote the serenity drug in medical journals and magazines. The theme was fear. Below are a few illustration details from the adverts – they’d have worked just fine in mystery/horror promotions as well.
Advertisements via Jerome Dubois collection.