What it is
Berberine is a golden-yellow alkaloid found in Berberis aristata (Daruharidra/Indian Barberry), Coptis chinensis (Huang Lian), and Phellodendron amurense (Amur Cork Tree). The phytosome form complexes berberine with phospholipids (lecithin), creating a lipophilic delivery system that bypasses berberine's notoriously poor oral bioavailability (<1%). This increases absorption by 3–5x, allowing lower doses to achieve therapeutic effects while reducing gastrointestinal side effects.