Wild Cherry Bark to Cough Syrup

The amber bottle of Ayer’s Cherry Pectoral — and the bright advertisement showing children beneath a cherry tree reaching toward an oversized version — captures an early moment in commercial cough medicine. But before such products populated drugstore shelves across Canada, their key ingredient had long been a medicinal staple.

Wild cherry bark has been used for generations across First Nations communities of the Eastern Woodlands, in regions that now include southern Ontario, Quebec, the Maritimes and the eastern United States. The inner bark is gathered with careful seasonal knowledge and prepared to relieve persistent dry coughs and ease pain. These effects come from prunasin, a naturally occurring compound known for soothing the respiratory system and acting as a mild sedative.

When Euro-Canadian physicians were introduced to wild cherry bark by Indigenous Peoples, they quickly added it to their growing medical tool kit. By the 1800s, it appeared in major pharmaceutical references, and by the early 20th century, companies were producing standardized cherry-bark extracts for pharmacies across the country. Remedies like Ayer’s Cherry Pectoral incorporated this long-used plant into one of the country’s first widely distributed cough syrups.

Today’s formulas may rely on synthetic ingredients, but wild cherry bark is still used in herbal practice for the same properties that made it indispensable generations ago.