White Horehound (Marrubium vulgare)

Horehound (Marrubium vulgare) is a square-stemmed perennial of about 20 in (50 cm) height, featuring fuzzy, downy greenish-gray leaves and small, white, double-lipped flowers. Known for its aromatic bitterness, horehound has a longstanding history in cough syrups and lozenges.

Expectorant & Decongestant: Increases thin mucus secretion, aiding cough relief, wheezing, bronchitis, and mild breathing difficulties. Digestive Stimulant: The bitter taste supports appetite and bile flow; mildly helps with indigestion. Cardiac Effect: Exerts a mild influence on heart rhythm, correcting minor irregularities. Traditional Cough Remedy: Classic ingredient in old-fashioned “horehound drops” for respiratory complaints.

Pregnancy: Generally best avoided; consult a practitioner if needed. Large Doses: The strong bitterness might irritate delicate digestion.

Originally from Europe, horehound now thrives in the Americas on dry, uncultivated land. Gathered in spring, the aerial parts (leaves and flowers) are typically dried for infusions or candies.