Barberry root bark comes from the root of the Berberis vulgaris plant, a shrub native to Europe, Asia, and North Africa, and now naturalized in North America. The root bark has a bright yellow color due to the presence of berberine, an alkaloid with a long history of use in traditional herbal practices. Known for its bitter taste, barberry root bark is commonly used in teas, tinctures, and extracts.

Shepherd’s purse, from the plant Capsella bursa-pastoris, is a small, annual herb in the mustard family, commonly found in temperate regions around the world. Named for its triangular, purse-like seed pods, shepherd’s purse has been traditionally used in herbal medicine, particularly for its potential effects on the circulatory and reproductive systems. It is often harvested during flowering and used fresh or dried.

Turmeric root, derived from the plant Curcuma longa, is a flowering plant in the ginger family, native to South Asia. The rhizome (root) is the part of the plant commonly used for culinary and medicinal purposes, recognized for its vibrant yellow-orange color and distinct earthy flavor. Turmeric has a long history of use in traditional medicine, particularly in Ayurvedic and Chinese medicine, and has gained popularity globally for its potential health benefits.

Coltsfoot leaf comes from the plant Tussilago farfara, a perennial herb that is commonly found in Europe, Asia, and North America. The plant is known for its distinctive yellow flowers that resemble dandelions and its broad, heart-shaped leaves. Coltsfoot has a long history of use in traditional herbal medicine, particularly for respiratory conditions.