As a dietary supplement or cosmetic ingredient, Kanna must meet stringent safety standards. Suppliers should provide a Certificate of Analysis (COA) for every batch, detailing heavy metal limits (Lead, Arsenic, Mercury, Cadmium) and microbiological testing (E. coli, Salmonella, Yeast & Mold). For entry into major markets, look for GMP (Good Manufacturing Practice) certified facilities and ensure the product complies with ISO 22000 or HACCP for food safety. If shipping to the US, verify FDA facility registration status.