English ivy leaf extract (*Hedera helix*) contains saponins, including hederacoside C, that help thin mucus and keep airways clear. European herbal traditions have used it for temporary coughs, bronchial congestion, and mild respiratory discomfort.
You can find English ivy as a liquid extract, syrup, tablet, or lozenge. Taking it with food often reduces stomach upset. Never handle or consume fresh ivy leaves directly; they can cause severe irritation.
Side effects occasionally include nausea, diarrhea, or an allergic reaction. Rare cases of liver strain have been reported with high or prolonged doses.