Wild Cherry Bark (Prunus serotina): The Natural Cough Suppressant

Wild Cherry Bark — Prunus serotina — is a North American tree whose bark is one of the most specific cough suppressants in the herbal materia medica. Unlike expectorants (which encourage coughing to clear mucus), Wild Cherry Bark is an antitussive (cough suppressant) — specifically indicated for dry, irritating, non-productive coughs that are causing distress without productive expectoration of mucus. Its prunasin content is metabolised to benzaldehyde and hydrocyanic acid — at the tiny therapeutic doses, these provide the sedating action on the cough reflex.

At Herba Naturalle, Wild Cherry Bark is listed in the comprehensive herb index as a specialist antitussive respiratory herb — complementary to the Lungwort Plus.

Active Compounds

• Prunasin — a cyanogenic glycoside; releases hydrocyanic acid (HCN) and benzaldehyde in small amounts on hydrolysis; the HCN at very low doses sedates the sensory nerve endings of the cough reflex in the bronchi
• Benzaldehyde — mild sedative and antispasmodic
• Flavonoids — anti-inflammatory and antioxidant
• Tannins — astringent; protective of the respiratory mucosa

Clinical Applications

Dry, Spasmodic, Irritating Cough

The primary and most specific application. Wild Cherry Bark is used exclusively for coughs where the problem is an over-sensitive, over-reactive cough reflex producing a dry, hacking, spasmodic cough — rather than a productive cough that needs to be encouraged. Used for whooping cough, post-infective cough, and the dry cough of asthma where expectoration is not required.

Nervous Cough

Coughs with a nervous or anxiety-driven component — where the cough reflex fires in stressful situations — respond to the mild sedative action of the prunasin metabolites.

Relevant Blog Posts

• Stop the Inflammation Pandemic: Breathe Easy – Inflammation in the Nose, Sinuses, and Lungs
• Inflammation of the Surface Nervous System: Where Healing Begins
• Stop the Inflammation Pandemic – The Lymphatic System
• Stop the Inflammation Pandemic: The Digestive System (Part 1)
• Welcome to the Final Episode of the Inflammation Pandemic Series

Safety

• Do not use for productive coughs — suppressing a productive cough prevents mucus clearance and worsens the underlying condition
• Professional guidance recommended — the cyanogenic glycoside content requires informed use; therapeutic doses are safe but the distinction between therapeutic and toxic is important
• Pregnancy: Avoid
• Children: Use with professional guidance only

Contact Herba Naturalle for respiratory herbal support. Browse all products and the full herb index.

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This article is for informational purposes only. Please consult a qualified medical herbalist before use.