White onion bulb

Traditional Uses & Why Herbalists Value It

Food-based household traditions use onion in syrups, broths and other seasonal recipes; the form and preparation are part of the story. Cutting or crushing a raw bulb releases much of its pungency; cooking shifts the sensory character toward sweetness.

What Modern Research Has Found

Research describes onion's sulfur chemistry and flavonoids and studies their biological activity. Human trials often use onion extracts or isolated compounds, with a different composition from the bulb used in food or household mixtures.

Plant Part, Preparation & Natural Constituents

Sulfur compounds change when onion is cut or heated. The bulb is the relevant part. The bulb also contains quercetin alongside sulfur compounds.

White onion bulb in Formulae

Super Tonic Drops use onion with horseradish and other sharp kitchen herbs in a pungent, vinegar-based seasonal style.

Products Containing This Ingredient

• Super Tonic (2 fl oz)

Sources & Further Reading

• WHO Monographs on Selected Medicinal Plants, Volume 1 >