Mrs. Winslow's Soothing Syrup

[3] The formula consisted of morphine sulphate (65 mg per fluid ounce), sodium carbonate, spirits foeniculi, and aqua ammonia but was changed several times.

[1] It was claimed that it was "likely to sooth any human or animal", and it effectively quieted restless infants and small children, especially for teething.

As well as newspapers, the company used various media to promote its product, including recipe books, calendars, and trade cards.

[5] In its marketing, it claimed to relieve constipation, freshen breath, and clean teeth.

[6] In 1911 the American Medical Association issued a publication titled "Nostrums And Quackery" in which, in a section called "Baby Killers", it incriminated Mrs. Winslow's Soothing Syrup.